CN111305268B - Underground pipe gallery and underlying space cooperative enclosure structure and construction method thereof - Google Patents
Underground pipe gallery and underlying space cooperative enclosure structure and construction method thereof Download PDFInfo
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- CN111305268B CN111305268B CN202010229280.9A CN202010229280A CN111305268B CN 111305268 B CN111305268 B CN 111305268B CN 202010229280 A CN202010229280 A CN 202010229280A CN 111305268 B CN111305268 B CN 111305268B
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- 238000010276 construction Methods 0.000 title claims abstract description 204
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 106
- 239000010959 steel Substances 0.000 claims abstract description 106
- 239000002689 soil Substances 0.000 claims abstract description 24
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 10
- 238000011065 in-situ storage Methods 0.000 claims description 7
- 238000005266 casting Methods 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000003466 welding Methods 0.000 claims description 2
- 206010011985 Decubitus ulcer Diseases 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 35
- 238000011161 development Methods 0.000 description 13
- 238000005516 engineering process Methods 0.000 description 8
- 230000002787 reinforcement Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 4
- 238000009424 underpinning Methods 0.000 description 4
- 238000009412 basement excavation Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 239000004567 concrete Substances 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000011150 reinforced concrete Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 235000009508 confectionery Nutrition 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000002737 fuel gas Substances 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
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- 239000004576 sand Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/10—Tunnels or galleries specially adapted to house conduits, e.g. oil pipe-lines, sewer pipes ; Making conduits in situ, e.g. of concrete ; Casings, i.e. manhole shafts, access or inspection chambers or coverings of boreholes or narrow wells
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/045—Underground structures, e.g. tunnels or galleries, built in the open air or by methods involving disturbance of the ground surface all along the location line; Methods of making them
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
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Abstract
The invention provides a subsurface pipe gallery, a subsurface space cooperative enclosure structure and a construction method thereof, wherein the structure comprises the following components: the TRD construction method wall with the built-in longitudinal section steel is arranged on two sides of the underground pipe gallery along the extending direction of the underground pipe gallery respectively, and the bottom height of the TRD construction method wall is not higher than the bottom height of the underground pipe gallery lower lying space; the underground pipe gallery bottom plate is used as a bottom supporting structure of the underground pipe gallery and a top plate of a decubitus space, and side edges of the underground pipe gallery bottom plate are fixedly connected with the TRD construction method wall, so that the TRD construction method wall and the underground pipe gallery bottom plate jointly form a downward opening door-shaped enclosure structure, the upper end of the door-shaped enclosure structure is used for supporting the underground pipe gallery, and the lower end of the door-shaped enclosure structure is used as an enclosure structure of the decubitus space. The structure has high rigidity and good soil retaining effect, provides a surrounding for the underground pipe gallery and the lower lying space, and is applicable to the cooperative construction of the underground pipe gallery and the lower lying space and the construction of the lower lying space of the existing underground pipe gallery.
Description
Technical Field
The invention relates to a collaborative co-construction method system for a downward-lying space under an existing city comprehensive underground pipe gallery, in particular to an underground pipe gallery, a downward-lying space collaborative enclosure structure and a construction method thereof.
Background
Along with the continuous advancement of urban construction in China, the construction engineering of urban underground pipe galleries is gradually increased in order to meet the perfect requirements of various facilities in cities. The utility tunnel refers to an underground structure which is formed by intensively distributing urban electric power, fuel gas, water supply, heat supply, garbage vacuum pipelines and the like to the lower part of an urban road. Along with the continuous perfection of the infrastructure, various pipelines are continuously increased, and the continuous perfection of the urban underground pipe gallery structure is a necessary path for the fine development of urban construction. Meanwhile, with the continuous development and progress of urban progress in China, urban soil resources are increasingly scarce, contradiction between land resources and space utilization is increasingly prominent, and demands for further development and utilization of urban decubitus space are increasingly emphasized by people. In order to fully utilize the urban decubitus space and promote functional diversification of the core area of the urban decubitus space, the method is applicable to the situation that other decubitus space facilities are built below the underground comprehensive pipe gallery, such as various decubitus space facilities such as subway wind pavilions, subway entrances and exits, channels and the like are built below the underground comprehensive pipe gallery. Based on the construction method, the underpinning technology in the construction process of the existing underground pipe gallery underlying space structure and the corresponding collaborative co-construction method for digging the underlying space enclosing structure under the underground pipe gallery are technical problems to be explored and solved in novel urban construction.
Development to date, the construction of urban underground comprehensive pipe galleries in China has been fully spread into a full popularization stage. The method has the advantages that the method is also actively put into planning, designing and constructing underground comprehensive pipe gallery projects in various domestic cities, such as Suzhou, wuhan, shenzhen, hangzhou and the like. Along with the development of economy and social demands, the construction environment and construction technology of the urban pipe gallery in China are continuously improved, the construction of a plurality of underground comprehensive pipe galleries is carried out in Hangzhou at present, and the construction of the urban underground comprehensive pipe gallery becomes a bright spot and a focus of development and utilization of urban sleeping space. In addition, various situations are increasing in which the lower lying space is built and the rest of the lower lying space is built together. For the construction of the lying space, a underpinning technology is mostly adopted for development and utilization, for example, a sweet water roadway project of the comprehensive renovation project of Yuhuangshan in Hangzhou, and a Zhejiang restaurant in Hangzhou, are all built below the existing space by the underpinning technology. However, such underpinning techniques are mostly used for increasing construction below the existing building space, but the construction mode is high in cost and high in danger, and co-construction of the underground pipe gallery and the space lying below the underground pipe gallery cannot be achieved.
At present, the construction process of the underground pipe gallery in China is generally divided into two types: firstly, sequentially working an underground pipe gallery, digging down by adopting forms of support and the like after digging guard piles on two sides of the underground pipe gallery, pouring all structures of the underground pipe gallery, and finally backfilling earthwork; the second is the combination of a semi-inverted underground pipe gallery and a prefabricated underground pipe gallery. For the first process, if the lower lying space and the upper underground pipe gallery are commonly developed in advance, the underground pipe gallery above the lower lying space is excavated sequentially after the lower lying space is excavated sequentially. The method has the following problems: 1) The procedures are complex, the construction speed is low, and the existing buildings and roads around are affected; 2) The construction cost is high, and the complicated construction process comprises the steps of supporting, renting, pulling out the profile steel and the like, so that the construction cost is increased; 3) The deformation joint reserved in construction can become the potential safety hazard of long-term piping lane operation, and under the relatively poor circumstances of peripheral soil property, the problem that underground piping lane wall body has crack, infiltration, structure subsidence deformation too big appears easily in long-term use, and engineering quality can not be ensured. Aiming at the situation that the co-development of the lower lying space and the upper underground pipe gallery is known in advance or the situation that the development of the lower lying space is not known in advance and the underground pipe gallery is known at the rear after completion, the corresponding complete construction process is not provided for the subsequent how to perform the co-construction of the lower lying space of the underground pipe gallery. The second technology solves the problem that the construction deformation joint is influenced in the construction process of the upper pipe gallery, and the temporary guard piles and the two walls of the outer wall of the prefabricated underground pipe gallery are combined into a permanent structure, so that the construction cost is saved, the construction period is short, but the problem of the existing underground pipe gallery in the lower construction space is solved, and the bottom plate of the pipe gallery cannot be directly used as the top plate of the lower lying space due to the prefabricated underground pipe gallery, so that even if the vertical stress can be met when the lower lying space is excavated, the horizontal stress cannot be met, and the cooperative co-construction requirement cannot be met. In addition, most of domestic attention is focused on the construction process of underground pipe galleries at present, and aiming at the problem of the construction of the underlying space under the existing underground pipe gallery, namely the problem of treatment of the underlying space, a systematic construction flow method and a construction method are not provided according to whether the development and the utilization of the underlying space and the soil conditions are different or not.
At present, a few patents relate to related problems in the field aiming at the current construction situation of the underground comprehensive pipe gallery and a series of problems existing when the underground space is excavated under the existing underground pipe gallery. The Chinese patent with the publication number of CN108343059A discloses a two-wall-in-one half-reverse construction method for an underground comprehensive pipe gallery combined prefabricated pipe barrel, and aims at the problem of construction joints in the conventional method of the underground comprehensive pipe gallery, the two-wall-in-one half-reverse construction method for the underground comprehensive pipe gallery combined prefabricated pipe barrel is adopted, the cement-stirred soil embedded prefabricated reinforced concrete I-shaped piles and pipe gallery outer lining walls are used as an enclosure structure dug under the pipe gallery and a permanent component part of the enclosure structure of the underground pipe gallery, and the problems of complexity in recovering profile steel by piles by the SMW construction method, the problem brought by construction joints and the like are solved. And as disclosed in China patent with publication number CN209585109U, an assembled pipe gallery with integrated pile and wall is also disclosed, and the two wall unification of prestressed sheet piles and pipe gallery outer walls is also applied to the assembled pipe gallery. However, the above patent is directed to two-wall-in-one technology for an assembled pipe rack and does not relate to a complex co-construction technology for a bedroom space in the presence of an open subsurface pipe rack.
Disclosure of Invention
In order to solve the technical problems, a first object of the present invention is to provide a collaborative enclosure structure for an underground pipe gallery and a sleeping space thereof, which has high rigidity and good soil retaining effect, and provides an enclosure for the underground pipe gallery and the sleeping space thereof, and is suitable for both simultaneous and non-simultaneous construction of the underground pipe gallery and the sleeping space thereof.
The second object of the invention is to provide a construction method of the underground pipe gallery and the lower lying space cooperative enclosure structure thereof, which is used for implementing the underground pipe gallery and the lower lying space cooperative enclosure structure thereof.
In view of the above, an aspect of the present invention provides an underground pipe gallery and a space under the gallery collaborative enclosure structure, including:
The TRD construction method wall with the built-in longitudinal section steel is arranged on two sides of the underground pipe gallery along the extending direction of the underground pipe gallery respectively, and the bottom height of the TRD construction method wall is not higher than the bottom height of the underground pipe gallery lower lying space;
The underground pipe gallery bottom plate is used as a supporting structure for excavating an underground pipe gallery lower lying space and a top plate of the lower lying space, and side edges of the supporting structure are fixedly connected with the TRD construction method wall, so that the TRD construction method wall and the underground pipe gallery bottom plate jointly form a downward opening door-shaped enclosure structure, the upper end of the door-shaped enclosure structure is used for supporting the underground pipe gallery, and the lower end of the door-shaped enclosure structure is used as an enclosure structure of the lower lying space.
Preferably, the height of the upper end of the TRD construction wall is not lower than the height of the top of the underground pipe gallery, so that the TRD construction wall and the underground pipe gallery bottom plate together enclose an H-shaped integral structure, the upper half of the TRD construction wall is opened upwards to form an enclosure structure of the underground pipe gallery, and the lower half of the TRD construction wall is opened downwards to form an enclosure structure of the lower lying space.
Preferably, the TRD construction method wall with the built-in longitudinal section steel comprises TRD construction method piles for inserting a plurality of section steel arranged longitudinally, wherein the section steel is connected with the underground pipe gallery wall body through pile body main ribs and is cast-in-situ with the underground pipe gallery wall body to form a whole, and a permanent supporting structure integrating the TRD construction method wall and the underground pipe gallery wall body is formed.
Preferably, a steel purlin is arranged between the side edge of the underground pipe gallery bottom plate and the TRD construction method wall, one side of the steel purlin is welded on the section steel in the TRD construction method wall, and the other side of the steel purlin is fixedly connected with the built-in reinforcing steel bar of the underground pipe gallery bottom plate.
Preferably, the steel enclosing purlin adopts a solid cylindrical steel structure with a rectangular cross section, the embedded part comprises a plurality of steel plates fixed on the inner side of the steel enclosing purlin at intervals, a plurality of shear plates are fixed on the steel plates, and the shear plates are vertically inserted into the side edges of the underground pipe gallery bottom plate.
Preferably, an underground continuous wall is further arranged in the area between the underground pipe gallery and the TRD construction method walls at the two sides of the underground pipe gallery, the top height of the underground continuous wall is not lower than the top height of the underground pipe gallery, and the bottom height of the underground continuous wall is not higher than the bottom height of the underground pipe gallery;
the height of the upper end of the TRD construction method wall is not lower than the height of the bottom plate of the underground pipe gallery;
The two sides of the underground pipe gallery bottom plate extend outwards, and the internal reinforcing steel bars penetrate through the underground continuous wall and then are connected to the section steel in the TRD construction method wall, so that the underground pipe gallery bottom plate and the TRD construction method walls respectively connected to the two ends of the underground pipe gallery bottom plate jointly form a door-shaped structure with downward openings, and the door-shaped structure is used as an enclosure structure of an underground construction space; the underground pipe gallery bottom plate and the underground continuous walls respectively connected to the two sides of the underground pipe gallery bottom plate jointly form a door-shaped structure with the top upwards, and the door-shaped structure is used as an enclosure structure of the underground pipe gallery.
Preferably, the roof beam is set up on the top of the underground pipe gallery.
The invention provides a construction method of an underground pipe gallery and a lying space cooperative enclosure structure thereof, which comprises the following steps:
Respectively arranging TRD construction method walls along two sides of the extending direction of the underground pipe gallery;
Digging down the soil layer to the elevation of the underground pipe gallery bottom plate, and chiseling out the profile steel on the inner side of the TRD construction method wall facing the elevation of the underground pipe gallery bottom plate;
Extending the bottom plate of the underground pipe gallery and fixedly connecting the bottom plate with the section steel; therefore, the TRD construction method wall and the underground pipe gallery bottom plate jointly form a downward-opening door-shaped enclosure structure, the upper end of the door-shaped enclosure structure is used for supporting the underground pipe gallery, and the lower end of the door-shaped enclosure structure is used as an enclosure structure of the down lying space. Wherein, the TRD construction method wall is a mixed stirring wall type underground continuous wall constructed by adopting the TRD construction method.
Preferably, a steel purlin is arranged between the TRD construction method wall and the underground pipe gallery bottom plate, one side of the steel purlin is fixed at the chiseled section steel, and the other side of the steel purlin is fixedly connected with the steel bars in the underground pipe gallery bottom plate.
Preferably, the height of the upper end of the TRD construction method wall is not lower than the top height of the underground pipe gallery, so that the TRD construction method wall and the underground pipe gallery bottom plate jointly enclose an H-shaped integral structure, the upper half part of the TRD construction method wall is upwards opened to form an enclosure structure of the underground pipe gallery, and the lower half part of the TRD construction method wall is downwards opened to form an enclosure structure of the lower lying space;
the TRD construction wall comprises TRD construction piles for inserting a plurality of longitudinally arranged section steel;
the section steel is connected with the underground pipe gallery wall body through the pile body main rib, and cast-in-situ to form a whole, so that a permanent structure integrating the enclosure pile wall and the pipe gallery wall body is formed.
Preferably, underground continuous walls are arranged in the region between the underground pipe gallery and the TRD construction method walls at the two sides of the underground pipe gallery along the extending direction of the underground pipe gallery, wherein the top height of the underground continuous walls is not lower than the top height of the underground pipe gallery, and the bottom height of the underground continuous walls is not higher than the bottom height of the underground pipe gallery;
the height of the upper end of the TRD construction method wall is not lower than the height of the bottom plate of the underground pipe gallery;
Extending two sides of the underground pipe gallery bottom plate outwards, penetrating the internal reinforcing steel bars of the underground pipe gallery bottom plate through the underground continuous wall and then connecting the underground pipe gallery bottom plate and the TRD construction method walls respectively connected to two ends of the underground pipe gallery bottom plate to form a door-shaped structure with downward heads as an enclosure structure of an underground construction space; the underground pipe gallery bottom plate and the underground continuous walls respectively connected to the two sides of the underground pipe gallery bottom plate jointly form a door-shaped structure with the top upwards, and the door-shaped structure is used as an enclosure structure of the underground pipe gallery.
Compared with the prior art, the invention has the beneficial effects that:
According to the invention, the bottom plate of the pipe gallery is simultaneously used as the top plate of the decubitus space, and the two plates are combined, so that the structural stability is improved; the bottom plate of the pipe gallery is fixedly connected with the TRD construction method wall to form a door-shaped structure, so that the construction procedures of the underground pipe gallery and the lower lying space of the underground pipe gallery during joint development and construction are reduced, the construction speed can be obviously improved, the construction period is shortened, and the cost is saved;
The underground pipe gallery is characterized in that a TRD construction method wall, a steel enclosing purlin and an underground pipe gallery bottom plate are fixedly connected, so that a door-shaped structure with a downward opening and an inverted door-shaped integral structure with an upward opening can be formed simultaneously, namely, the TRD construction method wall, the steel enclosing purlin and the underground pipe gallery bottom plate are fixedly connected to form an H-shaped integral structure, and the upper end of the H-shaped integral structure is used as an enclosure structure of the underground pipe gallery, and the lower end of the H-shaped integral structure is used as an enclosure structure of the underground pipe gallery.
In the case of constructing the lower lying space under the existing underground pipe gallery, the profile steel in the underground continuous walls at the two sides of the underground pipe gallery can be pulled out after the construction of the underground pipe gallery is completed, so that the TRD construction wall is additionally arranged at the two sides of the underground continuous wall along the extending direction of the underground pipe gallery, meanwhile, the reinforcing steel in the bottom plate of the underground pipe gallery extends to penetrate through the underground continuous wall and then is fixed on the profile steel in the TRD construction wall, in this way, the TRD construction wall and the bottom plate of the underground pipe gallery form a downward gate-shaped structure, and the underground continuous wall and the bottom plate of the underground pipe gallery form an upward gate-shaped structure, and serve as the retaining structure of the underground pipe gallery, so that the requirements of the construction process and the application process of the underground pipe gallery can be met, and the support with sufficient strength can be provided for the underground pipe gallery and the underground pipe gallery, and the safety and the reliability in the construction and application process can be effectively improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the application.
FIG. 1 is a schematic view of a subterranean pipe gallery and its underlying space co-enclosure in accordance with an embodiment of the present invention;
FIGS. 1.1 to 1.6 are schematic views illustrating construction stages of a basement tube rack and a cooperative enclosure structure for a bedroom thereof in accordance with an embodiment of the present invention;
FIG. 2 is a schematic view of an existing underground pipe gallery and its underlying space collaborative enclosure in a second embodiment of the invention;
FIGS. 2.1-2.4 are schematic views illustrating construction stages of an existing underground pipe gallery and a space-lying collaborative enclosure structure thereof in a second embodiment of the present invention;
FIG. 3 is a schematic view of an existing underground pipe gallery and its underlying space co-operating enclosure in accordance with a third embodiment of the present invention;
Fig. 3.1 to 3.3 are schematic views illustrating construction stages of an existing underground pipe gallery and a space-lying collaborative enclosure structure thereof according to a third embodiment of the present invention;
FIG. 4 (a) is a schematic diagram of the overall structure of the embedded part according to the embodiment of the present invention;
FIG. 4 (b) is a side view of the embedment shown in FIG. 4 (a);
Fig. 5 is a schematic diagram of a distribution structure of an embedded part and a steel purlin in an embodiment of the present invention.
Wherein, 1, TRD construction method wall; 2. section steel; 3. a top beam; 4. steel purlin; 5. an embedded part; 6. a floor of the underground pipe gallery; 7. underground pipe gallery wall; 8. a force transmission bracket; 9. pre-burying ribs; 10. a bottom plate reinforcing steel bar; 11. a pipe shed; 12. underground continuous wall; 51. a steel plate; 52. a shear plate; 53. and embedding a fixing bolt.
Detailed Description
The invention will be further described with reference to the drawings and examples.
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present application. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
Furthermore, in the description of the present invention, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "clockwise," "counterclockwise," etc. indicate or are based on the orientation or positional relationship shown in the drawings, merely for convenience of description and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the invention.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more, unless otherwise clearly defined.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
Example 1
The embodiment provides an underground pipe gallery and space cooperation envelope down thereof, include:
The TRD construction method wall 1 with the built-in longitudinal section steel 2 is respectively arranged at two sides of the underground pipe gallery along the extending direction of the underground pipe gallery, and the bottom height of the TRD construction method wall 1 is not higher than the bottom height of the underground pipe gallery lower lying space;
the underground pipe gallery bottom plate 6 is used as a supporting structure for excavating an underground pipe gallery lower lying space and a top plate of the lower lying space, and the side edges of the supporting structure are fixedly connected with the TRD construction method wall 1, so that the TRD construction method wall 1 and the underground pipe gallery bottom plate 6 jointly form a downward-opening door-shaped enclosure structure, the upper end of the door-shaped enclosure structure is used for supporting the underground pipe gallery, and the lower end of the door-shaped enclosure structure is used as an enclosure structure of the lower lying space.
In a preferred embodiment, as shown in fig. 1, the height of the upper end of the TRD wall 1 is not lower than the height of the top of the underground pipe gallery, so that the TRD wall 1 and the underground pipe gallery bottom plate 6 together enclose an H-shaped integral structure, the upper half of the integral structure is opened upwards to form an enclosure of the underground pipe gallery, and the lower half of the integral structure is opened downwards to form an enclosure of the lower lying space.
Preferably, the TRD construction wall 1 with the built-in longitudinal section steel comprises a TRD construction pile with a plurality of section steel 2 arranged longitudinally inserted therein, wherein the section steel 2 is connected with the underground pipe gallery wall 7 through pile body main ribs and is cast-in-situ with the underground pipe gallery wall 7 to form a whole, so that a permanent support structure integrating the TRD construction wall 1 and the underground pipe gallery wall 7 is formed. Specifically, in the actual construction process, a steel reinforcement cage is sleeved on the H-shaped steel 2, and the steel reinforcement cage is the pile body main reinforcement of the TRD construction method pile, based on which, the H-shaped steel 2 is connected with the underground pipe gallery wall body 7 through the pile body main reinforcement specifically as follows: the H-section steel 2 is firmly connected with the underground pipe gallery wall 7 by braiding or bundling the steel bars in the underground pipe gallery wall 7 into a steel reinforcement cage. The section steel 2 is of a cylindrical steel structure with an H-shaped cross section, and is longitudinally inserted into soil layers on two sides of the underground pipe gallery.
Preferably, as shown in fig. 1.3-1.5, a steel purlin 4 is arranged between the side edge of the underground pipe gallery bottom plate 6 and the TRD construction method wall 1, one side of the steel purlin 4 is welded on the section steel 2 in the TRD construction method wall 1, and the other side is fixedly connected with the built-in steel bars of the underground pipe gallery bottom plate 6. The steel purlin 4 adopts a solid cylindrical steel structure with a rectangular cross section, as shown in fig. 4 (a) and fig. 4 (b), the embedded part 5 comprises steel plates 51 fixed on the inner side of the steel purlin 4 at intervals, a plurality of shear plates 52 are fixed on the steel plates 51, and as shown in fig. 5, the shear plates 52 are vertically inserted into the side edges of the underground pipe gallery bottom plate 6.
Preferably, to further improve the reliability of the underground pipe gallery structure, a top beam 3 is also erected on top of the underground pipe gallery structure.
The construction process of the structure comprises the following steps:
as shown in fig. 1.1, TRD construction walls 1 are respectively arranged along two sides of the extension direction of the underground pipe gallery; preferably, as shown in fig. 1.2, a top beam 3 is also erected on the top of the TRD construction method wall 1;
as shown in fig. 1.3, excavating soil to the elevation of the underground pipe gallery bottom plate 6, and chiseling the profile steel 2 on the inner side of the TRD method wall 1 facing the elevation of the underground pipe gallery bottom plate 6;
One side of a steel purlin 4 is fixed at the position of the chiseled section steel 2, and the other side is fixedly connected with steel bars in a cast-in-situ underground pipe gallery bottom plate 6; the TRD construction method wall 1 and the underground pipe gallery bottom plate 6 jointly form a downward-opening door-shaped enclosure structure, the upper end of the door-shaped enclosure structure is used for supporting the underground pipe gallery, and the lower end of the door-shaped enclosure structure is used as an enclosure structure of a lower lying space;
The height of the upper end of the TRD construction method wall 1 is not lower than the height of the top of the underground pipe gallery, so that the TRD construction method wall 1 and the underground pipe gallery bottom plate 6 jointly enclose an H-shaped integral structure, the upper half part of the TRD construction method wall is upwards opened to form an enclosure structure of the underground pipe gallery, and the lower half part of the TRD construction method wall is downwards opened to form an enclosure structure of the downward lying space;
The TRD construction method wall 1 internally provided with the longitudinal section steel 2 comprises TRD construction method piles for inserting a plurality of section steel 2 with H-shaped cross sections;
the section steel 2 is connected with the underground pipe gallery wall body 7 through pile body main ribs and cast in situ to form a whole, so that a permanent structure integrating the enclosure pile wall and the pipe gallery wall body is formed.
Specifically: the TRD construction method wall 1 is respectively arranged on two sides along the extending direction of the underground pipe gallery, and specifically comprises the following steps: a plurality of H-shaped steel 2 are inserted side by side along the extending direction of the underground pipe gallery, a steel reinforcement cage is sleeved outside the H-shaped steel 2, the steel reinforcement cage and steel reinforcement in the underground pipe gallery wall 7 are bundled together, and casting is carried out, so that the TRD construction method wall 1 and the underground pipe gallery wall 7 are fixed into a whole; compared with the traditional cement mixing pile waterproof curtain combined with the enclosure structure of the bored pile, the method not only can increase the sealing strength and the connection firmness of the enclosure structure, but also can save the construction cost and effectively accelerate the construction speed; in addition, the TRD construction method pile wall has the characteristics of high rigidity and no need of recycling H-shaped steel 2, can be used as a permanent structure of an underground pipe gallery, and has certain advantages in terms of the strength of the pile and the construction cost compared with the technology of embedding cement stirring soil into a prefabricated reinforced concrete I-shaped pile wall.
The process of welding and connecting the exposed H-shaped steel 2 and the prefabricated steel purlin 4 requires arranging embedded parts 5 on the prefabricated steel purlin 4, specifically, steel plates 51 with the sizes of 500 1500 12 of the embedded parts 5, arranging three shear plates 52 of 150 60 16 on each steel plate 51 of the embedded parts 5, wherein the interval between the shear plates 52 is 300 mm, and the distance between the shear plates 52 and the outer edge of the steel plates 51 is 150 mm; each shear plate 52 is provided with 12 embedded fixing bolts 53, the embedded fixing bolts 53 are uniformly arranged around each shear plate 52, and four fixing bolts are arranged around each shear plate 52. Further preferably, the embedded part 5 and the steel purlin 4 are in a full-welded mode, the height of the fillet weld is more than 8mm, and the embedded part 5 is distributed on the steel purlin 4 every 100 mm. The steel plate 51 is welded to the steel bars of the underground pipe gallery floor 6, and as shown in fig. 1.6, the connection and arrangement positions of the steel bars of the pipe gallery floor and the steel plate 51 avoid the positions of the fixing bolts and the shear plates 52. The strength of the connecting node can be effectively enhanced in the process, so that the TRD construction method wall 1, the steel purlin 4 and the underground pipe gallery bottom plate 6 are integrated.
As shown in fig. 1.4, the cast-in-place underground pipe gallery and the top plate are integrated, see the attached drawings; the supporting beam is used as a permanent structure of the underground pipe gallery and is integrated with the top plate.
As shown in fig. 1.5, about 1m of the underground space is pre-excavated in the downward excavation process, and the force transmission bracket 8 and the embedded ribs 9 are additionally arranged, so that the underground space is continuously excavated.
When the upper underground pipe gallery and the lower lying space are excavated, a segmented jump excavation mode is adopted, and the soil arch effect is enhanced to ensure the safety of the excavated lower lying space; after the construction of the underground pipe gallery and the lying space is completed, the foundation pit is backfilled, and a schematic diagram of the final structure is shown in fig. 1.
The above-mentioned embodiment is directed to the condition that underground pipe gallery and the space of lying down are under construction simultaneously, and in the actual engineering construction process, still some circumstances are that underground pipe gallery is existing underground structure, according to the engineering needs, need increase other underground structure (such as subway wind pavilion etc.) in the space of lying down of this underground pipe gallery, therefore, the work progress of constructing of this existing underground pipe gallery is needed to be explained here: in order to facilitate the support, when the construction of the underground pipe gallery is carried out, the underground diaphragm wall 12 with the built-in section steel 2 is arranged along the two sides of the laying direction of the underground pipe gallery to serve as a soil retaining and enclosing structure for the excavation and construction of the underground pipe gallery, but the underground space of the underground pipe gallery cannot be predicted to be utilized at the time, and the construction period of the underground pipe gallery is relatively short, so that the section steel 2 in the underground diaphragm wall 12 is rented, and after the construction of the underground pipe gallery is finished, the section steel 2 in the underground diaphragm wall 12 is removed and restored, so that the underground diaphragm wall 12 on the two sides of the existing underground pipe gallery has certain soil retaining and enclosing strength, but if the construction of the underground space is carried out on the underground pipe gallery, the support strength of the underground diaphragm wall 12 is obviously insufficient.
In the situation of constructing the underlying space below the existing underground pipe gallery, the influence of different soil properties of the construction site on the construction mode is also large, so that the second embodiment is based on the fact that the soil property condition is poor (such as a soft clay region), the construction of the underlying space of the existing underground pipe gallery is expanded, and the third embodiment is based on the fact that the soil property condition is good (such as a sand region), the construction of the underlying space of the existing underground pipe gallery is expanded; the soil quality condition is determined to be poor when the soil layer is poor in supporting strength, and collapse is easily generated under the soil layer, otherwise, the soil quality condition is determined to be good.
Implement two
As shown in fig. 2, the final collaborative maintenance structure of the existing underground pipe gallery and the space lying below the underground pipe gallery is different from the first embodiment in that an underground continuous wall 12 is further arranged in the area between the underground pipe gallery and the TRD construction method walls 1 on both sides of the underground continuous wall 12, the top height of the underground continuous wall 12 is not lower than the top height of the underground pipe gallery, and the bottom height of the underground continuous wall 12 is not higher than the bottom height of the underground pipe gallery;
the height of the upper end of the TRD construction method wall 1 is not lower than the height of the bottom plate of the underground pipe gallery;
The two sides of the underground pipe gallery bottom plate 6 extend outwards, and the internal reinforcing steel bars penetrate through the underground continuous wall 12 and are then connected to the section steel 2 in the TRD construction method wall 1, so that the underground pipe gallery bottom plate 6 and the TRD construction method walls 1 respectively connected to the two ends of the underground pipe gallery bottom plate form a door-shaped structure with downward openings together, and the door-shaped structure is used as an enclosure structure of an underground construction space; the underground pipe gallery bottom plate 6 and the underground continuous walls 12 respectively connected to the two sides thereof together form a door-shaped structure with the top upward as an enclosure structure of the underground pipe gallery.
The concrete construction process comprises the following steps:
as shown in fig. 2.1, in the initial stage, the underground diaphragm walls 12 are arranged at two sides of the underground pipe gallery along the extending direction of the underground pipe gallery, the top height of the underground diaphragm walls 12 is not lower than the top height of the underground pipe gallery, and the bottom height of the underground diaphragm walls 12 is not higher than the bottom height of the underground pipe gallery; based on this, as shown in fig. 2.2, TRD construction walls 1 with built-in section steel 2 are added to the outer sides of two underground continuous walls 12, respectively, wherein the height of the upper ends of the TRD construction walls 1 is not lower than the height of the floor of the underground pipe gallery; preferably, it is higher than the underground pipe gallery floor 6.
The method comprises the steps of (1) digging a TRD construction wall 1 and an underground diaphragm wall 12 in an inclined manner, wherein the earthwork is located above the elevation of an underground pipe gallery bottom plate 6, extending the two sides of the underground pipe gallery bottom plate 6 outwards to enable internal reinforcing steel bars to penetrate through the underground diaphragm wall 12 and then be connected to profile steel 2 in the TRD construction wall 1, so that the underground pipe gallery bottom plate 6 and the TRD construction walls 1 respectively connected to the two ends of the underground pipe gallery bottom plate and the TRD construction walls 1 jointly form a door-shaped structure with downward heads, and the door-shaped structure is used as an enclosure structure of an underground construction space; the underground pipe gallery bottom plate 6 and the underground continuous walls 12 respectively connected to the two sides thereof together form a door-shaped structure with the top upward as an enclosure structure of the underground pipe gallery. Specifically: a small hole is formed in each of the underground pipe gallery wall 7 and the underground continuous wall 12 at the elevation of the pipe gallery bottom plate for constructors to pass through; as shown in fig. 2.3, the existing underground pipe gallery and the underground continuous wall 12 are excavated on a slope to excavate earthwork above the elevation of the existing underground pipe gallery bottom plate 6, then the bottom plate of the existing underground pipe gallery is extended, the TRD construction method wall 1 is partially chiseled to expose the profile steel 2 in the existing underground pipe gallery bottom plate, the reinforcing steel bars in the pipe gallery bottom plate and the profile steel 2 of the TRD construction method wall 1 are welded and cast-in-situ to form a whole, thus, as shown in fig. 2.4, the newly added TRD construction method wall 1 on two sides and the underground pipe gallery bottom plate 6 form a stable downward opening door-shaped structure, an upward opening door-shaped structure is formed between the underground continuous wall 12 and the underground pipe gallery bottom plate 6, meanwhile, the underground continuous wall 12 is used as an upright post for excavating a downward space, and finally a small hole is opened at the central position of the underground pipe gallery bottom plate 6 to reversely excavate the downward horizontal space;
After the construction of the lying space is completed, the foundation pit is backfilled, and a schematic diagram of the final structure is shown in fig. 2.
Example III
Because the present embodiment is better suited for the situation where the construction site has better soil properties, the difference between the present embodiment and the second embodiment is that: based on the soil condition that the support strength is better, in order to reduce cost, the TRD construction method wall 1 and the underground diaphragm wall 12 do not need to be excavated on a slope and are positioned above the elevation of the underground pipe gallery bottom plate 6, holes with the specification of about 2m are only needed to be drilled on two sides of the underground diaphragm wall 12, a pipe shed 11 (shown in fig. 3) is inserted into the upper portion of each hole, the pipe shed 11 is utilized to resist the pressure and bending moment of the earthwork above the pipe shed for constructors to enter and exit, then a small amount of earthwork below the pipe shed 11 is excavated, and then a new bottom plate is constructed, wherein the pipe shed comprises a support structure formed by a plurality of grouting steel pipes. The subsequent construction process is similar to that of the embodiment, and can be seen in fig. 3.1-3.3.
In summary, as shown in the second embodiment and the third embodiment, the underground pipe gallery, the cooperative enclosure structure of the lying space and the construction method not only consider the difference of the foreseeable time of the development and the utilization of the lying space, but also consider the differentiated treatment of the construction process under different soil conditions, and have wide applicability; the method has the characteristics of high construction speed, low construction cost, small environmental pollution and the like, and meets the requirements of low-carbon, environment-friendly and economic green engineering construction.
In conclusion, the invention uses the bottom plate of the pipe rack as the top plate of the decubitus space, the two plates are combined, so that the structural stability is improved; the bottom plate of the pipe gallery is fixedly connected with the TRD construction method wall to form a door-shaped structure, so that the construction procedures of the underground pipe gallery and the lower lying space of the underground pipe gallery during joint development and construction are reduced, the construction speed can be obviously improved, the construction period is shortened, and the cost is saved;
The underground pipe gallery is characterized in that a TRD construction method wall, a steel enclosing purlin and an underground pipe gallery bottom plate are fixedly connected, so that a door-shaped structure with a downward opening and an inverted door-shaped integral structure with an upward opening can be formed simultaneously, namely, the TRD construction method wall, the steel enclosing purlin and the underground pipe gallery bottom plate are fixedly connected to form an H-shaped integral structure, and the upper end of the H-shaped integral structure is used as an enclosure structure of the underground pipe gallery, and the lower end of the H-shaped integral structure is used as an enclosure structure of the underground pipe gallery.
In the case of constructing the lower lying space under the existing underground pipe gallery, because the steel pipes in the underground continuous walls at the two sides of the underground pipe gallery can be pulled out after the construction of the underground pipe gallery is completed, TRD (total concrete mixing) construction walls are additionally arranged at the two sides of the underground continuous walls along the extending direction of the underground pipe gallery, and meanwhile, the steel bars in the bottom plate of the underground pipe gallery extend to penetrate through the underground continuous walls and then are fixed on the section steel in the TRD construction walls, so that the TRD construction walls and the bottom plate of the underground pipe gallery form a downward gate-shaped structure, and the underground continuous walls and the bottom plate of the underground pipe gallery form an upward gate-shaped structure, and serve as the retaining structure of the underground pipe gallery, so that the requirements of the construction process and the application process of the underground pipe gallery can be met, and the retaining requirements of the underground pipe gallery can also be provided with sufficient strength, and the safety and the reliability in the construction and application process can be effectively improved.
In addition, it should be noted that:
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Although embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by those skilled in the art without departing from the spirit and principles of the invention, and any simple modification, equivalent variation and modification of the above embodiments in light of the technical principles of the invention may be made within the scope of the present invention.
Claims (2)
1. Underground pipe gallery and space cooperation envelope crouches down thereof, its characterized in that includes:
The TRD construction method wall with the built-in longitudinal section steel is arranged on two sides of the underground pipe gallery along the extending direction of the underground pipe gallery respectively, and the bottom height of the TRD construction method wall is not higher than the bottom height of the underground pipe gallery lower lying space;
the underground pipe gallery bottom plate is used as a supporting structure for excavating an underground pipe gallery lower lying space and a top plate of the lower lying space, and the side edges of the supporting structure are fixedly connected with the TRD construction method wall, so that the TRD construction method wall and the underground pipe gallery bottom plate jointly form a door-shaped enclosing structure with a downward opening, the upper end of the door-shaped enclosing structure is used for supporting the underground pipe gallery, and the lower end of the door-shaped enclosing structure is used as an enclosing structure of the lower lying space;
An underground continuous wall is further arranged in the area between the underground pipe gallery and the TRD construction method walls at the two sides of the underground pipe gallery, the top height of the underground continuous wall is not lower than the top height of the underground pipe gallery, and the bottom height of the underground continuous wall is not higher than the bottom height of the underground pipe gallery;
the height of the upper end of the TRD construction method wall is not lower than the height of the bottom plate of the underground pipe gallery;
The two sides of the underground pipe gallery bottom plate extend outwards, the internal steel bars penetrate through the underground continuous wall and then are connected to the section steel in the TRD construction method wall, the steel bars in the pipe gallery bottom plate and the section steel of the TRD construction method wall are welded and cast-in-situ to form a whole, and therefore the underground pipe gallery bottom plate and the TRD construction method walls respectively connected to the two ends of the underground pipe gallery bottom plate jointly form a door-shaped structure with downward openings, and the door-shaped structure is used as an enclosure structure of an underground construction space; the underground pipe gallery bottom plate and the underground continuous walls respectively connected to the two sides of the underground pipe gallery bottom plate jointly form a door-shaped structure with an upward opening, and the door-shaped structure is used as an enclosure structure of the underground pipe gallery.
2. The construction method of the underground pipe gallery and the underlying space cooperative enclosure structure thereof according to claim 1, comprising the following steps:
Respectively arranging TRD construction method walls along two sides of the extending direction of the underground pipe gallery;
Digging down the soil layer to the elevation of the underground pipe gallery bottom plate, and chiseling out the profile steel on the inner side of the TRD construction method wall facing the elevation of the underground pipe gallery bottom plate;
Extending the bottom plate of the underground pipe gallery and fixedly connecting the bottom plate with the section steel; so that the TRD construction method wall and the underground pipe gallery bottom plate jointly form a downward-opening door-shaped enclosing structure, the upper end of the door-shaped enclosing structure is used for supporting the underground pipe gallery, and the lower end of the door-shaped enclosing structure is used as an enclosing structure of the down lying space;
Setting up underground continuous walls along the extending direction of the underground pipe gallery in the region between the underground pipe gallery and TRD construction method walls at two sides of the underground pipe gallery, wherein the top height of the underground continuous walls is not lower than the top height of the underground pipe gallery, and the bottom height of the underground continuous walls is not higher than the bottom height of the underground pipe gallery;
the height of the upper end of the TRD construction method wall is not lower than the height of the bottom plate of the underground pipe gallery;
Extending two sides of the underground pipe gallery bottom plate outwards, penetrating the underground continuous wall with the internal reinforcing steel bars, connecting the underground continuous wall with the section steel in the TRD construction method wall, welding the reinforcing steel bars in the pipe gallery bottom plate with the section steel of the TRD construction method wall, and casting the reinforced steel bars into a whole in a cast-in-place manner, so that the underground pipe gallery bottom plate and the TRD construction method walls respectively connected to two ends of the underground pipe gallery bottom plate jointly form a gate-shaped structure with downward openings, and the gate-shaped structure is used as an enclosure structure of an underground construction space; the underground pipe gallery bottom plate and the underground continuous walls respectively connected to the two sides of the underground pipe gallery bottom plate jointly form a door-shaped structure with an upward opening, and the door-shaped structure is used as an enclosure structure of the underground pipe gallery.
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