CN117364744A - Double-layer staggered spliced prefabricated underground continuous wall and construction method thereof - Google Patents
Double-layer staggered spliced prefabricated underground continuous wall and construction method thereof Download PDFInfo
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- CN117364744A CN117364744A CN202311535952.9A CN202311535952A CN117364744A CN 117364744 A CN117364744 A CN 117364744A CN 202311535952 A CN202311535952 A CN 202311535952A CN 117364744 A CN117364744 A CN 117364744A
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- 238000010276 construction Methods 0.000 title claims abstract description 29
- 238000005266 casting Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 description 6
- 230000007547 defect Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 241000826860 Trapezium Species 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
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- 238000010008 shearing Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/20—Bulkheads or similar walls made of prefabricated parts and concrete, including reinforced concrete, in situ
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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
- E02D29/16—Arrangement or construction of joints in foundation structures
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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
- E02D31/02—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 against ground humidity or ground water
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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
- E02D31/08—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 against transmission of vibrations or movements in the foundation soil
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Abstract
The invention discloses a double-layer staggered spliced prefabricated underground continuous wall and a construction method thereof, wherein the double-layer staggered spliced prefabricated underground continuous wall comprises the following components: a plurality of double-deck crisscross prefabricated ground even wall specifically includes: the first wall body and the second wall body which are connected are integrally cast and formed, and the first wall body and the second wall body are staggered; the first wall body is provided with a first wave-shaped structure; the second wall body is provided with a second wave-shaped structure; the first wave structure and the second wave structure extend along the vertical direction; the first wave structure is embedded into a second wave structure of an adjacent second wall body; the second wave structure is embedded in the first wave structure of the adjacent first wall. The double-layer staggered prefabricated connecting wall forms a unique shape, the double-layer staggered spliced prefabricated connecting wall is formed by double-layer staggered connection, the existing joints and gaps are not formed at the transverse section and the longitudinal section, the longitudinal joint interface is not easy to open, and the indoor space is not directly exposed even if the longitudinal joint interface is open. The wave structure increases the water seepage path and the tensile effect, and the longitudinal joint waterproof effect and the longitudinal structure earthquake-resistant effect are better.
Description
Technical Field
The invention relates to the technical field of underground engineering construction, in particular to a double-layer staggered spliced prefabricated underground continuous wall and a construction method thereof.
Background
Along with the development of society and the progress of science and technology, underground engineering technology, particularly urban underground construction technology, has been developed to a great extent, wherein prefabricated underground continuous walls are gradually popularized and applied due to the characteristics of solving the technical bottleneck of traditional cast-in-place construction, reducing material and manpower consumption, reducing carbon emission and environmental pollution, saving urban floor space of an enclosure structure and the like.
In the related technology, when constructing the assembled underground station diaphragm wall, the existing advanced technology is to adopt the prefabricated diaphragm wall combined permanently, generally after the stratum is excavated, the connection node between two adjacent diaphragm walls is connected through the C-T piece, so that a plurality of single prefabricated wall bodies are connected into a whole large wall, and the steps of connecting the plurality of single prefabricated wall bodies into the whole large wall through the C-T piece and placing the whole large wall into the excavated stratum are repeated, so that a complete enclosure structure is finally formed, and the subsequent construction is convenient.
In the prior art, two adjacent prefabricated diaphragm walls are connected through a C-T piece, so that the machine sinking construction is facilitated, a large gap is reserved for a longitudinal joint C-T piece, grouting is compact, a field test piece is found, grouting is difficult to control and compact in a slurry environment, the phenomenon that the C-T piece cannot exert pretightening force is limited in longitudinal joint fastening effect, the longitudinal joint is presumed to be a hinged joint, meanwhile, the longitudinal joint interface opening caused by sinking construction is difficult to control, and after the longitudinal joint interface opening is difficult to reset, the longitudinal joint is extremely outstanding in waterproof problem, and the earthquake-proof effect of a longitudinal structure is required to be improved.
Accordingly, the prior art is still in need of improvement and development.
Disclosure of Invention
The invention aims to solve the technical problems of the prior art, provides a double-layer staggered spliced prefabricated diaphragm wall and a construction method thereof, and aims to solve the problems that the longitudinal joint interface of the prefabricated diaphragm wall is opened to cause the longitudinal joint waterproof effect and the longitudinal structure earthquake-resistant effect to be improved in the prior art.
The technical scheme adopted for solving the technical problems is as follows:
a double-deck staggered splice prefabricated wall, comprising: a plurality of double-layer staggered prefabricated connecting walls, wherein two adjacent double-layer staggered prefabricated connecting walls are connected with each other; each double-layer staggered prefabricated underground continuous wall comprises: integrally casting and forming a first wall body and a second wall body which are connected;
the edges of the sides of the first wall body and the edges of the sides of the second wall body are staggered;
a first wave structure is arranged on one side, facing the second wall, of the first wall;
a second wave structure is arranged on one side, facing the first wall, of the second wall;
wherein the first and second wave structures extend in a vertical direction;
the first waveform structure is embedded into a second waveform structure of a second wall body in the adjacent double-layer staggered prefabricated underground continuous wall;
the second wave structure is embedded into a first wave structure of a first wall body in the adjacent double-layer staggered prefabricated underground continuous wall.
The double-layer staggered spliced prefabricated underground continuous wall comprises a first wall body, a second wall body and a connecting piece, wherein the two side surfaces of the first wall body in the horizontal direction are respectively provided with a slot and a protrusion, the two side surfaces of the second wall body in the horizontal direction are respectively provided with a slot and a protrusion, and the slots and the protrusions extend in the vertical direction;
the protrusions are inserted into corresponding slots in the adjacent double-layer staggered prefabricated underground continuous wall.
The double-layer staggered spliced prefabricated underground continuous wall is characterized in that two side surfaces of the first wall body along the vertical direction are respectively provided with a plurality of layers of staggered spliced prefabricated underground continuous walls; screw holes are respectively formed in the two side faces of the second wall body along the vertical direction, and the screw holes are connected with two adjacent double-layer staggered prefabricated underground continuous walls through bolts.
The double-layer staggered spliced prefabricated wall is characterized in that the cross section of the first waveform structure is at least two trapezoids which are sequentially arranged, and the cross section of the second waveform structure is at least two trapezoids which are sequentially arranged.
The double-layer staggered spliced prefabricated underground continuous wall is characterized in that a cavity structure is arranged in the first wall body, or a groove structure is arranged on one side of the first wall body, which is away from the second wall body; a cavity structure is arranged in the second wall body, or a groove structure is arranged on one side, away from the first wall body, of the second wall body.
The double-layer staggered spliced prefabricated underground continuous wall is characterized in that the thickness of the double-layer staggered prefabricated underground continuous wall is 0.5m-1m, and the weight of the double-layer staggered prefabricated underground continuous wall is 10t-14t.
The double-layer staggered spliced prefabricated underground continuous wall comprises at least two double-layer staggered prefabricated underground continuous walls with different heights; the stagger distance along the horizontal direction of the first wall body and the second wall body in each double-layer staggered prefabricated underground continuous wall is the same, and the stagger distance along the vertical direction of the first wall body and the second wall body in each double-layer staggered prefabricated underground continuous wall is the same.
The construction method of the prefabricated underground continuous wall based on the double-layer staggered splicing of any one of the above, wherein the construction method comprises the following steps:
providing at least four double-layer staggered prefabricated ground connecting walls;
hanging a first double-layer staggered prefabricated underground continuous wall in the upper layer above the first double-layer staggered prefabricated underground continuous wall in the lower layer, and connecting the first double-layer staggered prefabricated underground continuous wall in the lower layer with the first double-layer staggered prefabricated underground continuous wall in the upper layer;
and lifting the next double-layer staggered prefabricated underground continuous wall in the next layer, clamping the next double-layer staggered prefabricated underground continuous wall in the next layer, lifting the next double-layer staggered prefabricated underground continuous wall in the previous layer to the upper part of the next double-layer staggered prefabricated underground continuous wall in the next layer, clamping the next double-layer staggered prefabricated underground continuous wall in the next layer, and connecting the next double-layer staggered prefabricated underground continuous wall in the next layer and the next double-layer staggered prefabricated underground continuous wall in the previous layer.
The construction method based on the double-layer staggered spliced prefabricated diaphragm wall comprises the steps that the height of a previous double-layer staggered prefabricated diaphragm wall in the lowest layer is different from that of a next double-layer staggered prefabricated diaphragm wall;
the height of the previous double-layer staggered prefabricated underground continuous wall in the uppermost layer is different from that of the next double-layer staggered prefabricated underground continuous wall.
The construction method based on the double-layer staggered spliced prefabricated underground continuous wall comprises the steps of lifting the two double-layer staggered prefabricated underground continuous walls and adopting bolt connection when connecting the double-layer staggered prefabricated underground continuous wall of the upper layer with the double-layer staggered prefabricated underground continuous wall of the lower layer.
The beneficial effects are that: the double-layer staggered prefabricated connecting wall forms a unique shape, the double-layer staggered spliced prefabricated connecting wall is formed by double-layer staggered connection, the existing joints and gaps are not formed at the transverse section and the longitudinal section, the longitudinal joint interface is not easy to open, and the indoor space is not directly exposed even if the longitudinal joint interface is open. In addition, the wave-shaped structure increases the water seepage path and the tensile effect, and the longitudinal joint waterproof effect and the longitudinal structure earthquake-resistant effect are better.
Drawings
FIG. 1 is a schematic view of a single double-layer interlaced prefabricated wall panel in accordance with an embodiment of the present invention.
FIG. 2 is a schematic illustration of a two-layer interleaved prefabricated wall-to-wall connection of upper and lower layers in an embodiment of the present invention.
FIG. 3 is a schematic view of a connection between two lower layers of two staggered prefabricated wall units according to an embodiment of the present invention.
FIG. 4 is a schematic illustration of a prefabricated wall joint for two double-deck staggered floors in the upper layer according to an embodiment of the present invention.
FIG. 5 is a schematic view of the structure of a single double-layer interlaced spliced prefabricated ground connection wall in an embodiment of the invention.
Reference numerals illustrate:
10. a first wall; 11. a first wave structure; 20. a second wall; 21. a second wave structure; 31. a slot; 32. a protrusion; 33. a screw hole; 40. a cavity structure; a1, prefabricating a ground connecting wall by a first double-layer staggered structure of the next layer; a2, prefabricating the ground connecting wall in a second double-layer staggered mode of the next layer; b1, prefabricating a ground connecting wall by a first double-layer staggered structure of the upper layer; b2, the second double-layer staggered prefabricated wall connecting structure of the upper layer.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clear and clear, the present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Referring to fig. 1-5, embodiments of a double-layer interlaced spliced prefabricated wall are provided.
As shown in fig. 1, the double-layer staggered spliced prefabricated wall comprises: a plurality of double-layer staggered prefabricated connecting walls, wherein two adjacent double-layer staggered prefabricated connecting walls are connected with each other; each double-layer staggered prefabricated underground continuous wall comprises: integrally casting and forming the connected first wall body 10 and second wall body 20; edges of the sides of the first wall body 10 and edges of the sides of the second wall body 20 are staggered with each other; a first wave structure 11 is arranged on one side of the first wall body 10 facing the second wall body 20; a second wave structure 21 is arranged on one side of the second wall body 20 facing the first wall body 10; wherein, the first wave structure 11 and the second wave structure 21 extend along the vertical direction; the first wave structure 11 is embedded into a second wave structure 21 of a second wall body 20 in the adjacent double-layer staggered prefabricated underground continuous wall; the second wave structure 21 is embedded in the first wave structure 11 of the first wall body 10 in the adjacent double-layer staggered prefabricated underground continuous wall.
Specifically, the double-layer staggered spliced prefabricated wall is formed by connecting a plurality of double-layer staggered prefabricated walls, the double-layer staggered prefabricated wall is provided with two layers of structures (a first wall body 10 and a second wall body 20 respectively), the two layers of structures are staggered, the projection of the side of the first wave structure 11 of the double-layer staggered prefabricated wall is projected in the direction of the side, and the projection of the first wall body 10 and the projection of the second wall body 20 are provided with overlapping areas in the projection direction, and the edges of the first wall body 10 and the edges of the second wall body 20 are not overlapped. The first wall 10 has six sides (front side, rear side, left side, right side, upper side, lower side, respectively), the second wall 20 has six sides (front side, rear side, left side, right side, upper side, lower side, respectively), the front side of the first wall 10 and the front side of the second wall 20 are parallel to each other and do not overlap, the rear side of the first wall 10 and the rear side of the second wall 20 are parallel to each other and do not overlap, the left side of the first wall 10 and the left side of the second wall 20 are parallel to each other and do not overlap, the right side of the first wall 10 and the right side of the second wall 20 are parallel to each other and do not overlap, the upper side of the first wall 10 and the upper side of the second wall 20 are parallel to each other and do not overlap, and the lower side of the first wall 10 and the lower side of the second wall 20 are parallel to each other and do not overlap. If the first wave structure 11 is located on the right side of the first wall 10, and the second wave structure 21 is located on the left side of the second wall 20, the right side of the first wall 10 and the left side of the second wall 20 are connected to each other. The single double-layer staggered prefabricated underground continuous wall is formed by casting, and the first wall body 10 and the second wall body 20 are cast together to form a whole.
The wave structure is a wave-shaped cross section structure, the wave structure is provided with wave crests and wave troughs, the wave crests extend to form wave crest strips, and the wave troughs extend to form wave trough grooves. The wave crest strips of the first wave-shaped structures 11 are embedded into wave trough grooves of the second wave-shaped structures 21 of the second wall bodies 20 in the other double-layer staggered prefabricated underground continuous wall, and the wave trough grooves of the first wave-shaped structures 11 are embedded into the wave crest strips of the second wave-shaped structures 21 of the second wall bodies 20 in the other double-layer staggered prefabricated underground continuous wall. The wave crest strips of the second wave-shaped structures 21 are embedded into the wave trough grooves of the first wave-shaped structures 11 of the first wall body 10 in the other double-layer staggered prefabricated underground continuous wall, and the wave trough grooves of the second wave-shaped structures 21 are embedded into the wave crest strips of the first wave-shaped structures 11 of the first wall body 10 in the other double-layer staggered prefabricated underground continuous wall. The first wave structure 11 and the second wave structure 21 of the two adjacent double-layer staggered prefabricated underground continuous walls are mutually embedded, so that the two double-layer staggered prefabricated underground continuous walls are limited to move in the vertical direction of the extending direction of the wave structure, and the two adjacent double-layer staggered prefabricated underground continuous walls can still move in the extending direction of the wave structure. Since the sides of the first wall 10 and the sides of the second wall 20 are staggered with each other, the first wall 10 of each double-layered prefabricated wall corresponds to three adjacent double-layered prefabricated walls, the second wall 20 of each double-layered prefabricated wall corresponds to three adjacent double-layered prefabricated walls, and in general, each double-layered prefabricated wall may correspond to six adjacent double-layered prefabricated walls, and if the heights of the respective double-layered prefabricated walls are different, there may correspond to more adjacent double-layered prefabricated walls, for example, eight adjacent double-layered prefabricated walls.
The double-layer staggered prefabricated diaphragm wall adopts higher-strength concrete different from the traditional diaphragm wall, and can solve the problems of low strength, low quality and poor durability of cast-in-place concrete.
The double-layer staggered prefabricated connecting wall forms a unique shape, the double-layer staggered spliced prefabricated connecting wall is formed by double-layer staggered connection, the existing joints and gaps are not formed at the transverse section and the longitudinal section, the longitudinal joint interface is not easy to open, and the indoor space (namely the space formed by surrounding the double-layer staggered spliced prefabricated connecting wall) is not directly exposed even if the longitudinal joint interface is open. In addition, the wave-shaped structure increases the water seepage path and the tensile effect, and the longitudinal joint waterproof effect and the longitudinal structure earthquake-resistant effect are better. Therefore, the method has the technical defects that the longitudinal joint of the assembled underground structure is difficult to fasten and easy to open, the bearing capacity and the waterproof performance are seriously attenuated after the longitudinal joint is opened, and meanwhile, the bending resistance, the waterproof capacity and the structural integrity of the structure can be obviously improved.
In a preferred implementation manner of the embodiment of the present invention, as shown in fig. 1, two sides of the first wall 10 along the horizontal direction are respectively provided with a slot 31 and a protrusion 32, two sides of the second wall 20 along the horizontal direction are respectively provided with a slot 31 and a protrusion 32, and the slot 31 and the protrusion 32 extend along the vertical direction; the protrusions 32 are inserted into corresponding slots 31 in the adjacent double-layer staggered prefabricated underground continuous wall.
Specifically, the longitudinal joints of two adjacent double-layer staggered prefabricated ground connecting walls are connected by adopting C-T pieces, and the C-T pieces can be slots 31 and protrusions 32. The front side and the rear side of the first wall body 10 are respectively provided with a slot 31 and a protrusion 32, the front side and the rear side of the second wall body 20 are respectively provided with a slot 31 and a protrusion 32, the slot 31 and the protrusion 32 extend along the vertical direction, and the protrusion 32 can be inserted into the corresponding slot 31 in the adjacent double-layer staggered prefabricated connecting wall along the vertical direction. The slot 31, the protrusion 32, the first wave structure 11 and the second wave structure 21 all extend along the vertical direction, and when the first wave structure 11 and the second wave structure 21 are assembled and disassembled along the vertical direction, the slot 31 and the protrusion 32 are matched, and the first wave structure 31 and the second wave structure 21 are matched.
In a preferred implementation manner of the embodiment of the present invention, as shown in fig. 1, two sides of the first wall 10 along the vertical direction are respectively provided with screw holes 33; screw holes 33 are respectively formed in two side faces of the second wall body 20 along the vertical direction, and the screw holes 33 are connected with two adjacent double-layer staggered prefabricated ground continuous walls through bolts.
Specifically, the transverse seams of two adjacent double-layer staggered prefabricated underground continuous walls are connected by threads, such as bolts. Screw holes 33 are formed in the upper side and the lower side of the first wall body 10, screw holes 33 are formed in the upper side and the lower side of the second wall body 20, two adjacent double-layer staggered prefabricated wall connecting screw holes 33 are located at opposite positions, and two screw holes 33 can be connected through bolts, for example, stud bolts can be used. Screw holes 33 are located at the edges of the upper or lower side and correspond to the peak or trough positions of the wave structure.
In a preferred implementation manner of the embodiment of the present invention, as shown in fig. 1, the cross section of the first waveform structure 11 is at least two trapezoids arranged in sequence, and the cross section of the second waveform structure 21 is at least two trapezoids arranged in sequence.
Specifically, the waveform structure adopts a trapezoid wave, and then the section of the waveform structure is a plurality of trapezoids which are arranged in sequence. The wave crest is a trapezoid wave crest strip with a right arranged wave crest, and the wave trough is an inverted trapezoid wave trough. The cross section of the first wave structure 11 has at least two trapezoids, respectively an upright trapezium and an inverted trapezium.
In a preferred implementation manner of the embodiment of the present invention, as shown in fig. 1, a cavity structure 40 is disposed in the first wall 10, or a groove structure is disposed on a side of the first wall 10 facing away from the second wall 20; a cavity structure 40 is disposed in the second wall 20, or a groove structure is disposed on a side of the second wall 20 facing away from the first wall 10.
Specifically, in order to reduce the weight of the double-layer staggered prefabricated underground continuous wall, a cavity structure 40 (as indicated by a dotted line in fig. 1) is arranged in the first wall body 10 and/or the second wall body 20, or a groove structure is arranged on the left side surface of the first wall body 10 and/or the right side surface of the second wall body 20, so that the dead weight of the double-layer staggered prefabricated underground continuous wall can be effectively reduced, and the double-layer staggered prefabricated underground continuous wall is convenient to transport and construct.
In a preferred implementation manner of the embodiment of the present invention, as shown in fig. 1, the thickness of the double-layer staggered prefabricated underground continuous wall is 0.5m-1m, and the weight of the double-layer staggered prefabricated underground continuous wall is 10t-14t.
Specifically, the thickness of the double-layered staggered prefabricated wall, i.e., the interval between the left side surface of the first wall body 10 and the right side surface of the second wall body 20 is 0.5m to 1m, for example, 0.75m. The weight of the double-layer staggered prefabricated wall is 10t-14t, for example, the weight is 12t.
In a preferred implementation manner of the embodiment of the present invention, as shown in fig. 1 and 4, at least two double-layer staggered prefabricated underground continuous walls with different heights exist in the double-layer staggered spliced prefabricated underground continuous walls.
Specifically, the height of the double-layer staggered prefabricated underground continuous wall is configured according to a specific application scene, and two double-layer staggered prefabricated underground continuous walls with different heights are generally configured, so that when the double-layer staggered prefabricated underground continuous walls with different heights are adjacent double-layer staggered prefabricated underground continuous walls, transverse seam gaps are not connected in a straight line.
In a preferred implementation manner of the embodiment of the present invention, as shown in fig. 1 to 3, the stagger distances in the horizontal direction of the first wall body 10 and the second wall body 20 in each double-layer staggered prefabricated wall are the same, and the stagger distances in the vertical direction of the first wall body 10 and the second wall body 20 in each double-layer staggered prefabricated wall are the same.
Specifically, the height of the first wall body 10 in the single double-layer staggered prefabricated underground continuous wall is the same as the height of the second wall body 20 (the distance between the upper side surface and the lower side surface is the height), and the width of the first wall body 10 in the single double-layer staggered prefabricated underground continuous wall is the same as the width of the second wall body 20 (the distance between the front side surface and the rear side surface is the width). The heights of the double-layer staggered prefabricated underground continuous walls can be different, the staggered distances of the first wall body 10 and the second wall body 20 along the horizontal direction are the same, the staggered distances of the first wall body 10 and the second wall body 20 along the vertical direction are the same, and then the double-layer staggered prefabricated underground continuous walls with different heights can be connected.
The double-layer staggered spliced prefabricated wall has the following technical effects:
1. the invention connects through the unique shape of two adjacent prefabricated underground continuous walls, can make the transverse and longitudinal sections of the assembled underground structure not be a pure joint, improves the bending resistance and the waterproof capability of the joint, and endows the underground continuous walls with stronger tensile resistance and compression resistance and remarkable earthquake-resistant effect.
2. According to the invention, the shape of the prefabricated underground diaphragm wall is set to be a wave-shaped section, so that the longitudinal shearing resistance of the prefabricated underground diaphragm wall is enhanced, the water seepage path is increased, and the defect that the longitudinal joint of the traditional prefabricated underground diaphragm wall is outstanding in water resistance is overcome.
3. According to the invention, through a double-layer staggered splicing mode, the joint areas are all provided with cross section supports, the indoor space is not directly exposed after the interface is opened, the defects that the longitudinal joint interface is opened and is difficult to reset after the longitudinal joint interface is opened in the conventional prefabricated ground connecting wall is subjected to heavy insertion construction are overcome, and the structural integrity is improved.
4. The double-layer staggered prefabricated underground continuous wall adopts the concrete with higher strength to pour, so that the problems of low strength, low quality and poor durability of cast-in-place concrete can be solved, the hollow cavity structure of the structural member can reduce materials and weight, and a large amount of material consumption, transportation and installation difficulties are reduced, so that the cast-in-place concrete has more excellent carbon reduction capability than a cast-in-place enclosure structure.
5. The invention adopts the thinking mode of automatic high construction to produce and construct, completes prefabrication of the underground continuous wall in a factory, and transports the prefabricated underground continuous wall to the site to carry out intelligent automatic construction and splicing, thereby improving the construction efficiency and saving the construction period.
Based on the double-layer staggered spliced prefabricated underground continuous wall in any one of the embodiments, the invention further provides a preferred embodiment of a construction method based on the double-layer staggered spliced prefabricated underground continuous wall:
the construction method based on the double-layer staggered spliced prefabricated underground continuous wall provided by the embodiment of the invention comprises the following steps:
and step S100, providing at least four double-layer staggered prefabricated diaphragm walls.
Step 200, hanging the first double-layer staggered prefabricated underground continuous wall in the previous layer above the first double-layer staggered prefabricated underground continuous wall in the next layer, and connecting the first double-layer staggered prefabricated underground continuous wall in the next layer with the first double-layer staggered prefabricated underground continuous wall in the previous layer.
Step S300, lifting the next double-layer staggered prefabricated underground continuous wall in the next layer, clamping the next double-layer staggered prefabricated underground continuous wall in the next layer, lifting the next double-layer staggered prefabricated underground continuous wall in the previous layer to the upper side of the next double-layer staggered prefabricated underground continuous wall in the next layer, clamping the next double-layer staggered prefabricated underground continuous wall in the next layer, and connecting the next double-layer staggered prefabricated underground continuous wall in the next layer and the next double-layer staggered prefabricated underground continuous wall in the previous layer.
Specifically, when a plurality of double-layer staggered prefabricated underground continuous walls are connected, at least two layers of walls can be formed from bottom to top, and each layer of wall can be provided with at least two double-layer staggered prefabricated underground continuous walls. When in connection, the first double-layer staggered prefabricated ground connecting wall B1 of the upper layer and the first double-layer staggered prefabricated ground connecting wall A1 of the lower layer are connected (shown in fig. 2), then the connection of the following double-layer staggered prefabricated ground connecting wall is carried out, specifically, the second double-layer staggered prefabricated ground connecting wall A2 of the lower layer is clamped with the first double-layer staggered prefabricated ground connecting wall A1 of the lower layer (shown in fig. 3), the second double-layer staggered prefabricated ground connecting wall B2 of the upper layer is clamped with the first double-layer staggered prefabricated ground connecting wall B1 of the upper layer (shown in fig. 4), and finally the second double-layer staggered prefabricated ground connecting wall A2 of the lower layer and the second double-layer staggered prefabricated ground connecting wall B2 of the upper layer are connected (shown in fig. 5). And continuing to connect the following double-layer staggered prefabricated diaphragm walls until the two layers of double-layer staggered prefabricated diaphragm walls are completed, and continuing to return to the step S200 until the connection of the preset layers of double-layer staggered prefabricated diaphragm walls is completed, so as to obtain the double-layer staggered spliced prefabricated diaphragm wall.
When the double-layer staggered prefabricated underground continuous wall is hoisted, the double-layer staggered prefabricated underground continuous wall is required to be positioned, so that the double-layer staggered prefabricated underground continuous wall can be accurately moved in place. And the intelligent technologies such as BIM, beidou positioning, 5G and the Internet of things are integrated, the intelligent mobile automatic construction platform realizes the construction flow of automatic positioning, correction and assembly, the construction efficiency is improved, and the construction period is saved.
The upper and lower two-layer double-layer staggered prefabricated underground continuous wall adopts bolt connection, specifically, when the upper layer double-layer staggered prefabricated underground continuous wall and the lower layer double-layer staggered prefabricated underground continuous wall are connected, the two double-layer staggered prefabricated underground continuous walls are hoisted and are connected by bolts. The double-layer staggered prefabricated ground connection of the next layer can be separated from the ground by a preset distance, such as 1m. Of course, the lower layer double-layer staggered prefabricated connecting wall can be fixed (for example, placed at a corresponding position), the upper layer double-layer staggered prefabricated connecting wall is hoisted, and the upper layer double-layer staggered prefabricated connecting wall and the lower layer double-layer staggered prefabricated connecting wall are connected through bolts.
The front and back two double-layer staggered prefabricated underground continuous walls in the same layer are connected in a clamping manner, and are matched with the bulges and the slots, and the first wave structure and the second wave structure are matched with each other. Under the cooperation of the protrusions, the slots, the first wave-shaped structures and the second wave-shaped structures, the movement of two adjacent double-layer staggered prefabricated ground connecting walls in the same layer in the horizontal direction is limited.
The height of the previous double-layer staggered prefabricated underground continuous wall in the lowest layer is different from that of the next double-layer staggered prefabricated underground continuous wall. The height of the previous double-layer staggered prefabricated underground continuous wall in the uppermost layer is different from that of the next double-layer staggered prefabricated underground continuous wall. The two-layer staggered prefabricated underground continuous wall can be provided with at least two layers of two-layer staggered prefabricated underground continuous walls, the lowest layer and the uppermost layer can be connected by adopting two double-layer staggered prefabricated underground continuous walls with different heights, other layers between the lowest layer and the uppermost layer can be connected by adopting the two-layer staggered prefabricated underground continuous walls with the same height, and then transverse seams between the upper layer and the lower layer are not located at the same height, so that a straight line cannot be formed.
It is to be understood that the invention is not limited in its application to the examples described above, but is capable of modification and variation in light of the above teachings by those skilled in the art, and that all such modifications and variations are intended to be included within the scope of the appended claims.
Claims (10)
1. The utility model provides a prefabricated wall is even to double-deck crisscross concatenation, which characterized in that includes: a plurality of double-layer staggered prefabricated connecting walls, wherein two adjacent double-layer staggered prefabricated connecting walls are connected with each other; each double-layer staggered prefabricated underground continuous wall comprises: integrally casting and forming a first wall body and a second wall body which are connected;
the edges of the sides of the first wall body and the edges of the sides of the second wall body are staggered;
a first wave structure is arranged on one side, facing the second wall, of the first wall;
a second wave structure is arranged on one side, facing the first wall, of the second wall;
wherein the first and second wave structures extend in a vertical direction;
the first waveform structure is embedded into a second waveform structure of a second wall body in the adjacent double-layer staggered prefabricated underground continuous wall;
the second wave structure is embedded into a first wave structure of a first wall body in the adjacent double-layer staggered prefabricated underground continuous wall.
2. The double-layer staggered spliced prefabricated wall of claim 1, wherein the two side surfaces of the first wall body along the horizontal direction are respectively provided with a slot and a bulge, the two side surfaces of the second wall body along the horizontal direction are respectively provided with a slot and a bulge, and the slot and the bulge extend along the vertical direction;
the protrusions are inserted into corresponding slots in the adjacent double-layer staggered prefabricated underground continuous wall.
3. The double-layer staggered spliced prefabricated wall according to claim 2, wherein two side surfaces of the first wall body along the vertical direction are respectively provided with; screw holes are respectively formed in the two side faces of the second wall body along the vertical direction, and the screw holes are connected with two adjacent double-layer staggered prefabricated underground continuous walls through bolts.
4. The double-layer staggered spliced prefabricated wall according to claim 2, wherein the cross section of the first wave structure is at least two trapezoids which are sequentially arranged, and the cross section of the second wave structure is at least two trapezoids which are sequentially arranged.
5. The double-layer staggered spliced prefabricated wall according to any one of claims 2 to 4, wherein a cavity structure is arranged in the first wall body or a groove structure is arranged on one side of the first wall body away from the second wall body; a cavity structure is arranged in the second wall body, or a groove structure is arranged on one side, away from the first wall body, of the second wall body.
6. The double-layer interlaced spliced prefabricated diaphragm wall according to any of claims 2-4, wherein the thickness of the double-layer interlaced prefabricated diaphragm wall is 0.5m-1m, and the weight of the double-layer interlaced prefabricated diaphragm wall is 10t-14t.
7. The double-layer staggered spliced prefabricated diaphragm wall according to any one of claims 2-4, wherein at least two double-layer staggered prefabricated diaphragm walls with different heights exist in the double-layer staggered spliced prefabricated diaphragm wall; the stagger distance along the horizontal direction of the first wall body and the second wall body in each double-layer staggered prefabricated underground continuous wall is the same, and the stagger distance along the vertical direction of the first wall body and the second wall body in each double-layer staggered prefabricated underground continuous wall is the same.
8. A construction method of a prefabricated underground continuous wall based on double-layer staggered splicing according to any one of claims 2 to 7, which is characterized by comprising the following steps:
providing at least four double-layer staggered prefabricated ground connecting walls;
hanging a first double-layer staggered prefabricated underground continuous wall in the upper layer above the first double-layer staggered prefabricated underground continuous wall in the lower layer, and connecting the first double-layer staggered prefabricated underground continuous wall in the lower layer with the first double-layer staggered prefabricated underground continuous wall in the upper layer;
and lifting the next double-layer staggered prefabricated underground continuous wall in the next layer, clamping the next double-layer staggered prefabricated underground continuous wall in the next layer, lifting the next double-layer staggered prefabricated underground continuous wall in the previous layer to the upper part of the next double-layer staggered prefabricated underground continuous wall in the next layer, clamping the next double-layer staggered prefabricated underground continuous wall in the next layer, and connecting the next double-layer staggered prefabricated underground continuous wall in the next layer and the next double-layer staggered prefabricated underground continuous wall in the previous layer.
9. The construction method of the prefabricated underground diaphragm wall based on double-layer staggered splicing according to claim 8, wherein the height of the previous double-layer staggered prefabricated underground diaphragm wall in the lowest layer is different from the height of the subsequent double-layer staggered prefabricated underground diaphragm wall;
the height of the previous double-layer staggered prefabricated underground continuous wall in the uppermost layer is different from that of the next double-layer staggered prefabricated underground continuous wall.
10. The construction method for the double-layer staggered spliced prefabricated diaphragm wall based on the claim 8, wherein when the double-layer staggered prefabricated diaphragm wall of the previous layer and the double-layer staggered prefabricated diaphragm wall of the next layer are connected, the two double-layer staggered prefabricated diaphragm walls are lifted and connected by bolts.
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| FR2570411A1 (en) * | 1984-09-19 | 1986-03-21 | Chambreuil Pierre | Multi-purpose monobloc for the construction of double walls |
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| CN113431412A (en) * | 2021-07-01 | 2021-09-24 | 重庆大学 | Assembled double-layer corrugated steel plate composite shear wall and splicing method thereof |
| CN215253751U (en) * | 2021-05-12 | 2021-12-21 | 合肥新悦达装饰工程有限公司 | Heat-proof double-layer heat-preservation curtain wall |
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|---|---|---|---|---|
| FR2570411A1 (en) * | 1984-09-19 | 1986-03-21 | Chambreuil Pierre | Multi-purpose monobloc for the construction of double walls |
| CN107514075A (en) * | 2017-07-31 | 2017-12-26 | 浙江中南建设集团钢结构有限公司 | Waveform list steel plate wall system and its construction method |
| CN209989833U (en) * | 2019-03-15 | 2020-01-24 | 上海市水利工程集团有限公司 | Assembled prefabricated staggered combined retaining wall |
| CN215253751U (en) * | 2021-05-12 | 2021-12-21 | 合肥新悦达装饰工程有限公司 | Heat-proof double-layer heat-preservation curtain wall |
| CN113431412A (en) * | 2021-07-01 | 2021-09-24 | 重庆大学 | Assembled double-layer corrugated steel plate composite shear wall and splicing method thereof |
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