CN110397058B - Caisson connecting structure and construction method - Google Patents
Caisson connecting structure and construction method Download PDFInfo
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- CN110397058B CN110397058B CN201910770165.XA CN201910770165A CN110397058B CN 110397058 B CN110397058 B CN 110397058B CN 201910770165 A CN201910770165 A CN 201910770165A CN 110397058 B CN110397058 B CN 110397058B
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- caisson
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- 238000010276 construction Methods 0.000 title claims abstract description 25
- 238000011065 in-situ storage Methods 0.000 claims abstract description 49
- 229910001294 Reinforcing steel Inorganic materials 0.000 claims description 16
- 108010068370 Glutens Proteins 0.000 claims description 14
- 235000021312 gluten Nutrition 0.000 claims description 14
- 238000009434 installation Methods 0.000 claims description 8
- 230000003014 reinforcing effect Effects 0.000 claims description 4
- 238000005266 casting Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 19
- 238000009415 formwork Methods 0.000 abstract description 5
- 239000002131 composite material Substances 0.000 description 9
- 238000000034 method Methods 0.000 description 5
- 238000012938 design process Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000009417 prefabrication Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 241001465382 Physalis alkekengi Species 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D23/00—Caissons; Construction or placing of caissons
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Revetment (AREA)
Abstract
The invention discloses a caisson connecting structure and a construction method, wherein the caisson connecting structure comprises a caisson bottom plate, bearing members positioned at the periphery of the caisson bottom plate and a floor slab connected with the bearing members, the caisson bottom plate is connected to the lower part of the bearing members, the floor slab is connected to the upper part of the bearing members, and the caisson bottom plate and the floor slab are positioned at different sides of the bearing members; the caisson bottom plate comprises a caisson prefabricated layer and a caisson cast-in-situ layer cast on the top surface of the caisson prefabricated layer, the bearing component is a cast-in-situ beam, and the caisson cast-in-situ layer and the bearing component form an integrated forming structure. Therefore, the prefabricated and cast-in-situ superposed caisson structure is formed, the integrity is superior to that of a fully prefabricated caisson, and the waterproof and integral structure safety is ensured. And moreover, the caisson prefabricated layer can be produced by adopting a universal floor slab die, so that the production efficiency is high and the cost is low. During construction, the caisson prefabricated layer can be used as a lower template of a caisson cast-in-situ layer formwork, site lifting and drop and template supporting are simple and convenient, and site construction difficulty is greatly reduced.
Description
Technical Field
The invention belongs to the technical field of assembly type building design, and particularly relates to a caisson connecting structure and a construction method.
Background
The full pouring caisson is gradually replaced by the full prefabricated caisson at present along with the rising of prefabricated building due to the problems of complex binding of steel bars, difficult formwork supporting, high construction difficulty and the like. As shown in fig. 1, a conventional fully prefabricated caisson 1-1 generally comprises a caisson bottom plate and counter-sills arranged around the bottom plate, and the caisson with the counter-sills is directly prefabricated into a whole in a factory. During installation, the gluten 1-2 of the prefabricated caisson needs to pass through the bearing component 1-3 and then extend into the cast-in-situ layer above the prefabricated floor slab 1-4, so that the prefabricated caisson is installed after all the prefabricated floor slabs 1-4 around are lifted, and a pouring space of the bearing component 1-3 is reserved between the prefabricated floor slab 1-4 and the prefabricated caisson 1-1. The prefabricated caisson has the problems of complex die design, difficult factory production and higher production cost, difficult component transportation, difficult site lifting and falling and high construction operation difficulty of the bearing component templates, difficult operation of binding reinforcing steel bars extending into the floor slab, poor integrity after construction and the like. In addition, as the counter-sills with the width of 100mm are arranged around the caisson, the position of the sewage vertical pipe is required to deviate to the indoor space, so that the installation of bathtub and other appliances is limited, and the using space of the toilet is reduced.
Disclosure of Invention
The invention aims to solve the technical problems of overcoming the defects of the prior art, providing a caisson connecting structure which is low in cost, convenient to produce and construct and good in integrity, and can solve the problem of reduction of toilet space caused by full prefabrication of the caisson in the design process.
In order to solve the technical problems, the invention adopts the following technical scheme:
the caisson connecting structure comprises a caisson bottom plate, bearing members positioned around the caisson bottom plate and a floor slab connected with the bearing members, wherein the caisson bottom plate is connected to the lower part of the bearing members, the floor slab is connected to the upper part of the bearing members, and the caisson bottom plate and the floor slab are positioned on different sides of the bearing members; the caisson bottom plate comprises a caisson prefabricated layer and a caisson cast-in-situ layer cast on the top surface of the caisson prefabricated layer, the bearing component is a cast-in-situ beam, and the caisson cast-in-situ layer and the bearing component form an integrated forming structure.
Therefore, the prefabricated and cast-in-situ superposed caisson structure is formed, the integrity is superior to that of a fully prefabricated caisson, and the waterproof and integral structure safety is ensured. And moreover, the caisson prefabricated layer can be produced by adopting a universal floor slab die, so that the production efficiency is high, the cost is low, and the problems of difficult manufacturing of the full prefabricated caisson die and production of components and higher component cost are solved. During construction, the caisson prefabricated layer can be used as a lower template of a caisson cast-in-situ layer formwork, site lifting and drop and template supporting are simple and convenient, and site construction difficulty is greatly reduced. Moreover, the overlapping caisson can not influence the use space of the building due to the production requirement of the prefabricated caisson.
Preferably, the load bearing member is a load bearing beam or a load bearing wall.
As a further improvement of the above technical scheme:
In order to improve the structural strength and the connection strength of the caisson prefabricated layer and the bearing members, the side surface of the caisson prefabricated layer is provided with caisson bottom ribs which extend outwards from the opposite side surface, and the caisson bottom ribs extend into the corresponding bearing members.
In order to improve the structural strength and the connection strength of the caisson cast-in-situ layer and the bearing members, caisson gluten extending into the corresponding bearing members is arranged on the side surface of the caisson cast-in-situ layer. Preferably, the tail end of the caisson gluten is bent upwards to form an L-shaped bent reinforcing steel bar.
In order to avoid site tapping and delay of construction progress, a wire box is pre-buried at the bottom of the caisson prefabricated layer. The wire box can be used for installing lamps in the toilet of the next layer.
In order to further improve the structural integrity, the floor comprises a floor precast layer and a floor cast-in-situ layer cast on the top surface of the floor precast layer, and the caisson cast-in-situ layer, the bearing member and the floor cast-in-situ layer are of an integrated structure.
In order to improve the structural strength and the connection strength of the floor slab prefabricated layer and the bearing members, the side surface of the floor slab prefabricated layer, which faces towards the corresponding bearing member, is provided with floor slab bottom ribs which extend into the bearing member.
The invention also provides a construction method of the caisson connecting structure, which comprises the following steps:
S1: hoisting the caisson prefabricated layer to a corresponding installation position;
S2: supporting a caisson cast-in-situ layer mould and a bearing member mould;
S3: and pouring concrete into the caisson cast-in-situ layer mould and the bearing member mould, so as to connect the caisson bottom plate and the bearing member into a whole.
As a further improvement of the above technical scheme:
The side of the caisson prefabricated layer is provided with caisson bottom ribs which extend outwards from opposite sides, and the caisson bottom ribs extend into corresponding bearing component dies.
The caisson cast-in-situ layer mould is internally provided with a reinforcing mesh, the reinforcing mesh is formed by staggered transverse reinforcing steel bars and longitudinal reinforcing steel bars, two ends of the transverse reinforcing steel bars and the longitudinal reinforcing steel bars respectively extend outwards to form caisson gluten, and the caisson gluten extends into the corresponding bearing member mould.
The step S1 further includes: hoisting the floor precast layer to a corresponding installation position; the step S2 further includes: supporting a floor cast-in-situ layer mold on the top surface of the floor precast layer; the step S3 further includes: and pouring concrete into the floor cast-in-situ layer mould so as to connect the caisson bottom plate, the bearing member and the floor into a whole.
Compared with the prior art, the invention has the advantages that:
1. The method unifies the prefabricated caisson with the composite floor slab, optimizes the production method in design, saves the cost of die manufacture and factory production, reduces the transportation cost of components, and solves the problems of complex die design, higher die manufacture and production cost and component transportation.
2. The invention has simple and convenient field lifting and drop position and template support, reduces the field construction operation difficulty, accelerates the lifting construction speed, reduces the construction cost and accelerates the engineering progress.
3. The invention also solves the problem of reduced toilet space caused by fully prefabricating the caisson in the design process, and the design application range of the prefabricated caisson method is not limited.
Drawings
FIG. 1 is a schematic diagram of a conventional fully prefabricated caisson connection structure.
FIG. 2 is a schematic view of a caisson connection structure according to an embodiment of the present invention.
Figure 3 is a schematic cross-sectional view of a caisson connection structure of an embodiment of the present invention.
Legend description: 1. a caisson bottom plate; 11. a caisson prefabricated layer; 12. a caisson cast-in-situ layer; 13. sinking box bottom ribs; 14. caisson gluten; 2. a force bearing member; 3. a floor slab; 31. a floor slab prefabricated layer; 32. a floor cast-in-situ layer; 33. floor bottom ribs; 4. and (4) casting the wall column 4 in situ.
Detailed Description
The invention is further described below in connection with specific preferred embodiments, but it is not intended to limit the scope of the invention.
Example 1:
As shown in fig. 2 and3, the caisson connecting structure of this embodiment includes a caisson bottom plate 1, four bearing members 2 located around the caisson bottom plate 1, and four floorslabs 3 corresponding to the four bearing members 2 one by one. The lower end of the intersection of two adjacent bearing members 2 is provided with a cast-in-situ wall column 4. The caisson bottom plate 1 is adjacent to the lower part of each bearing member 2, the floor slab 3 is connected to the upper part of the corresponding bearing member 2, and the caisson bottom plate 1 and the floor slab 3 are positioned on different sides of the bearing members 2.
In this embodiment, the load bearing member 2 is a load bearing beam. In addition, the bearing members 2 around the caisson bottom plate 1 can also be bearing walls.
As shown in fig. 3, the caisson bottom plate 1 comprises a caisson prefabricated layer 11 and a caisson cast-in-situ layer 12 cast on the top surface of the caisson prefabricated layer 11, wherein the side surface of the caisson prefabricated layer 11 is provided with a bottom rib 13 extending outwards from the opposite side surface, and the caisson bottom rib 13 extends into the corresponding bearing component 2; the side of the caisson cast-in-situ layer 12 is provided with gluten 14 which extends into the corresponding force-bearing member 2. The floor 3 comprises a floor precast layer 31 and a floor cast-in-situ layer 32 cast on the top surface of the floor precast layer 31, and the side surface of the floor precast layer 31 facing the corresponding bearing member 2 is provided with a floor bottom rib 33 extending into the bearing member 2; the bearing member 2 is a cast-in-situ beam, and the caisson cast-in-situ layer 12, the bearing member 2 and the floor cast-in-situ layer 32 are integrated into a whole.
In this embodiment, the caisson prefabricated layer 11, the caisson cast-in-situ layer 12 and the floor prefabricated layer 31 are all embedded with reinforcing steel bars, and the reinforcing steel bars are formed by interlacing transverse reinforcing steel bars and longitudinal reinforcing steel bars, and two ends of the transverse reinforcing steel bars and the longitudinal reinforcing steel bars respectively extend outwards to form a caisson bottom bar 13, a caisson gluten 14 or a floor bottom bar 33. Wherein the caisson gluten 14 is bent upwards to form a bent rebar.
The construction method of the caisson connecting structure comprises the following steps:
s1: hoisting the caisson prefabricated layer 11 and the floor slab prefabricated layer 31 to corresponding installation positions respectively;
S2: supporting a caisson cast-in-situ layer mould, a bearing member mould, a floor cast-in-situ layer mould and a cast-in-situ wall column mould; the caisson bottom ribs 13, the caisson gluten 14 and the floor bottom ribs 33 extend into the bearing member die;
s3: and pouring concrete into the caisson cast-in-situ layer mould, the bearing member mould and the floor cast-in-situ layer mould, so as to connect the caisson bottom plate 1, the bearing member 2 and the floor 3 into a whole.
The invention cancels the peripheral side edge of the caisson, and pours the bearing component of the caisson (or in the cast-in-situ wall column) by the on-site formwork, thereby solving the problems of difficult manufacturing of prefabricated caisson mould, difficult production of component and higher component cost. The caisson method and the composite floor slab method are unified, factory production is simple and single, floor slabs at the caisson are subjected to plate lowering treatment (namely, the caisson prefabricated layer is lower than the floor slab prefabricated layer) during on-site hoisting, steel bars are directly anchored into cast-in-situ beams (or cast-in-situ wall columns), caisson bottom plate gluten is configured and constructed according to traditional building gluten, on-site hoisting drop positions and formwork support are simple and convenient, the problem that toilet space is reduced due to full prefabricated caissons in the design process is solved, and the design application range of the assembled caisson prefabrication method is not limited.
According to the construction method of the composite floor slab, the caisson and the composite floor slab are firstly hoisted, the caisson and the composite floor slab are not hoisted in sequence, and the upper cast-in-situ layer concrete is reapplied, so that the composite floor slab and the whole structural member are connected into a whole, and the waterproof and structural safety is ensured; the full prefabricated caisson (caisson with inverse bank) is directly prefabricated into a whole in a factory, so that the factory production die cost is high, and the integrity of the full prefabricated caisson is not good after site construction is finished.
The production mode of the composite caisson is the same as that of the composite floor slab, the floor slab die can be used universally, the production efficiency is high, the composite caisson cannot influence the use space of a building due to the production requirement of the prefabricated caisson, the drainage and water supply vertical pipes are required to deviate inwards, and the use space of a toilet is occupied.
In addition, can also set up the line box in the bottom of the prefabricated layer of caisson for the lamps and lanterns installation in next floor bathroom to further improve the efficiency of construction.
The present application is not limited to the above embodiments, but is capable of other modifications and variations within the scope of the application as defined by the appended claims.
Claims (4)
1. The construction method of the caisson connecting structure comprises a caisson bottom plate (1), bearing members (2) positioned around the caisson bottom plate (1) and a floor slab (3) connected with the bearing members (2), wherein the caisson bottom plate (1) is connected to the lower part of the bearing members (2), the floor slab (3) is connected to the upper part of the bearing members (2), and the caisson bottom plate (1) and the floor slab (3) are positioned on different sides of the bearing members (2); the caisson bottom plate (1) comprises a caisson prefabricated layer (11) and a caisson cast-in-situ layer (12) cast on the caisson prefabricated layer (11), the bearing component (2) is a cast-in-situ beam, and the caisson cast-in-situ layer (12) and the bearing component (2) form an integrated forming structure;
the construction method is characterized by comprising the following steps of:
S1: hoisting the caisson prefabricated layer (11) to a corresponding installation position;
S2: supporting a caisson cast-in-situ layer mould and a bearing member mould;
S3: and casting concrete into the caisson cast-in-situ layer mould and the bearing member mould, so as to connect the caisson bottom plate (1) and the bearing member (2) into a whole.
2. Construction method according to claim 1, characterized in that the side of the caisson preform layer (11) is provided with caisson bottom ribs (13) extending outwards from opposite sides, which caisson bottom ribs (13) extend into the corresponding force-bearing member mould.
3. The construction method according to claim 1, wherein a reinforcing mesh is arranged in the caisson cast-in-situ layer mould, the reinforcing mesh is formed by staggered transverse reinforcing steel bars and longitudinal reinforcing steel bars, two ends of the transverse reinforcing steel bars and the longitudinal reinforcing steel bars respectively extend outwards to form caisson gluten (14), and the caisson gluten (14) extends into the corresponding bearing member mould.
4. A construction method according to any one of claims 1 to 3, wherein the step S1 further comprises: hoisting the floor precast layer (31) to a corresponding installation position; the step S2 further includes: a floor cast-in-situ layer mould is supported on the top surface of the floor precast layer (31); the step S3 further includes: and pouring concrete into the floor cast-in-situ layer mould so as to connect the caisson bottom plate (1), the bearing member (2) and the floor (3) into a whole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910770165.XA CN110397058B (en) | 2019-08-20 | 2019-08-20 | Caisson connecting structure and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910770165.XA CN110397058B (en) | 2019-08-20 | 2019-08-20 | Caisson connecting structure and construction method |
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| Publication Number | Publication Date |
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| CN110397058A CN110397058A (en) | 2019-11-01 |
| CN110397058B true CN110397058B (en) | 2024-04-30 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204401783U (en) * | 2014-12-31 | 2015-06-17 | 长沙远大住宅工业集团有限公司 | Caisson of toilet structure |
| CN107795017A (en) * | 2017-10-25 | 2018-03-13 | 长沙远大住宅工业集团股份有限公司 | A kind of attachment structure and its construction method of caisson and partition wall |
| CN207419610U (en) * | 2017-11-03 | 2018-05-29 | 三能集成房屋股份有限公司 | A kind of assembled caisson of toilet and its mounting structure |
| CN208718016U (en) * | 2018-06-29 | 2019-04-09 | 湖南东方红建设集团有限公司 | A kind of precast caisson of assembled architecture |
| CN210975857U (en) * | 2019-08-20 | 2020-07-10 | 长沙远大住宅工业安徽有限公司 | Caisson connection structure |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8291675B2 (en) * | 2010-12-30 | 2012-10-23 | Tikhovskiy Nikolay P | Modular construction system and components and method |
-
2019
- 2019-08-20 CN CN201910770165.XA patent/CN110397058B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204401783U (en) * | 2014-12-31 | 2015-06-17 | 长沙远大住宅工业集团有限公司 | Caisson of toilet structure |
| CN107795017A (en) * | 2017-10-25 | 2018-03-13 | 长沙远大住宅工业集团股份有限公司 | A kind of attachment structure and its construction method of caisson and partition wall |
| CN207419610U (en) * | 2017-11-03 | 2018-05-29 | 三能集成房屋股份有限公司 | A kind of assembled caisson of toilet and its mounting structure |
| CN208718016U (en) * | 2018-06-29 | 2019-04-09 | 湖南东方红建设集团有限公司 | A kind of precast caisson of assembled architecture |
| CN210975857U (en) * | 2019-08-20 | 2020-07-10 | 长沙远大住宅工业安徽有限公司 | Caisson connection structure |
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| Publication number | Publication date |
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| CN110397058A (en) | 2019-11-01 |
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