CN114263219A - Advanced water stop structure of bottom plate post-cast strip for underground engineering and construction method - Google Patents
Advanced water stop structure of bottom plate post-cast strip for underground engineering and construction method Download PDFInfo
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- CN114263219A CN114263219A CN202111596890.3A CN202111596890A CN114263219A CN 114263219 A CN114263219 A CN 114263219A CN 202111596890 A CN202111596890 A CN 202111596890A CN 114263219 A CN114263219 A CN 114263219A
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- Prior art keywords
- bottom plate
- water stop
- post
- cast strip
- expansion joint
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 45
- 238000010276 construction Methods 0.000 title claims abstract description 16
- 238000012407 engineering method Methods 0.000 title description 2
- 239000004567 concrete Substances 0.000 claims description 35
- 229910000831 Steel Inorganic materials 0.000 claims description 4
- 239000011150 reinforced concrete Substances 0.000 claims description 4
- 239000010959 steel Substances 0.000 claims description 4
- 238000005192 partition Methods 0.000 claims description 3
- 238000013461 design Methods 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- 239000004793 Polystyrene Substances 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 229920002223 polystyrene Polymers 0.000 description 3
- 238000001556 precipitation Methods 0.000 description 3
- 239000003673 groundwater Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 235000001270 Allium sibiricum Nutrition 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003631 expected effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
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- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
The invention provides a bottom plate post-cast strip advanced water stop structure for underground engineering and a construction method thereof. The invention has the beneficial effects that: reasonable in design, simple structure, safe and reliable can realize leading stagnant water way one shot forming, need not to pick the chisel and carry out waterproof caulking again to the expansion joint, reaches the purpose of saving the cost and raising the efficiency.
Description
Technical Field
The invention relates to the technical field of building construction, in particular to a bottom plate post-cast strip advanced water stop structure for underground engineering and a construction method.
Background
In construction work, when a building foundation is in a water-rich area, a foundation slab post-cast strip is usually below the ground water level. In this case, in building design, in order to reduce the precipitation time, the back filling of the fertilizer tank is performed in advance, and the post-cast strip is usually designed to be in the form of a water stop post-cast strip.
The traditional advanced water stop post-cast strip adopts the secondary pouring mode, and the advanced water stop bottom plate (300 back bottom plate) and the building structure foundation bottom plate are poured twice, pour the advanced water stop bottom plate earlier, pour the building structure foundation bottom plate later, lead to advanced water stop post-cast strip bottom plate and structure formation cold joint, have the risk of leaking. In order to meet the settlement requirement of the advanced water-stop post-cast strip bottom plate, an expansion joint with the width of 30-40 mm is required to be arranged in the middle of the concrete bottom plate of the advanced water-stop post-cast strip, the expansion joint becomes a waterproof weak point, and the expansion joint is filled with a plastic benzene plate in the conventional method; and after the concrete pouring of the bottom plate of the advanced water stop post-pouring belt is finished, the plastic polystyrene plate needs to be cleaned and the sealing material needs to be refilled, the plastic polystyrene plate cannot be completely cleaned in the process, the process is long in time consumption, complex and tedious, concrete leakage and incomplete picking and chiseling of the polystyrene plate are easy to occur in the construction process, the waterproof effect is poor, and the waterproof effect cannot reach the expected effect.
How to solve the above technical problems is the subject of the present invention.
Disclosure of Invention
In order to solve the defects of the prior art, the invention provides the advanced water stopping structure of the bottom plate post-cast strip for the underground engineering and the construction method, which have the advantages of reasonable design, simple structure, safety and reliability, can realize one-step forming by an advanced water stopping method, do not need to pick up and chive an expansion joint and carry out waterproof caulking again, and achieve the purposes of saving cost and improving efficiency.
The technical scheme adopted by the invention for solving the technical problems is as follows: the invention provides a bottom plate post-cast strip advanced water stop structure for underground engineering, which comprises a foundation bottom plate, a concrete bottom plate, a post-cast strip and a water stop strip, wherein the foundation bottom plate is provided with a plurality of holes;
the concrete bottom plate is fixedly connected with the foundation bottom plate, an expansion joint is arranged in the concrete bottom plate, and the water stop belt is arranged in the expansion joint;
the water stop comprises an outer attaching part, a middle embedding part and a connecting part, the outer attaching part is positioned outside the expansion joint, the middle embedding part is positioned in the expansion joint, and the water stop is provided with a plurality of partition plates;
and the foundation bottom plate and the concrete bottom plate are poured at one time.
The distance between the expansion joints is 30mm-40mm, and the water stop is made of rubber.
The outer portion of pasting level sets up, well bury the portion vertical set up in outer portion of pasting middle part, and the junction promptly connecting portion are triangle-shaped, well portion of burying is provided with globular arch, just well portion both sides of burying with the top surface of outer portion all is provided with the baffle.
When the invention is actually used:
a construction method of a bottom plate post-cast strip advanced water stop structure for underground engineering comprises the following steps:
adding a reinforced concrete bottom plate with the thickness of 300mm at the bottom of the post-cast strip of the foundation bottom plate, and arranging an expansion joint with the width of 30-40 mm in the middle of the added concrete bottom plate;
vertically placing the water stop belt in an expansion joint in the middle of the concrete bottom plate, pre-embedding after the bottom plate steel bars are bound, and then separating a post-cast belt;
the foundation bottom plate and the concrete bottom plate are poured once, the two sides of the foundation bottom plate and the concrete bottom plate are poured simultaneously, flexible tee joint tandem feeding is adopted, and two sides of the foundation bottom plate and the concrete bottom plate are synchronously poured and vibrated for one-time forming.
The invention has the beneficial effects that: simple structure, reasonable in design, this scheme adopts and carries out the optimization and the innovation of construction process on the basis of traditional advance stagnant water post-cast strip, adopts advance stagnant water post-cast strip and basic raft board one shot forming's construction process, has avoided forming the cold joint between advance stagnant water concrete bottom plate and the building structure foundation slab, makes its advance stagnant water post-cast strip and the real whole that becomes of basic raft board, has greatly strengthened the water-proof effects in advance stagnant water post-cast strip. And the expansion joint is reserved at the position of the advanced water stop bottom plate, the water stop belt is reserved in advance, and the rubber water stop belt at the lower part forms a whole, so that the waterproof effect is enhanced.
This scheme adopts the reinforced concrete bottom plate that stretches out 300mm outward and the mode that once pours of structure foundation slab, and the reinforcing wholeness both can play waterproof purpose and can guarantee the flexible of post-cast strip, function such as subside again. The added concrete bottom plate and the foundation bottom plate form a whole, and the original post-cast strip of the foundation bottom plate is continuously kept in the foundation bottom plate. And after the foundation engineering is finished, performing subsequent work such as outer wall waterproofing, earthwork backfilling and the like. Precipitation is stopped when the superstructure load is able to resist groundwater buoyancy. And after the construction of the main body structure is finished, the structure settlement is basically stable, and when the post-cast strip can be poured, concrete at the post-cast strip in the foundation slab and the outer wall of the basement is poured.
The effect of the outer portion of pasting of waterstop of this scheme is equal to the outer rubber waterstop of pasting in the conventional way, bury the portion in the waterstop at the bottom of because of its material rigidity, the plasticity is big, and its shape has arch and baffle, can separate the bottom plate about, satisfy the effect of the inhomogeneous settlement in post-cast strip both sides, can reach the effect of leading stagnant water again through increasing the infiltration path footpath, the waterstop connecting portion will bury the portion and link to each other with outer portion of pasting in through the triangle-shaped structure, utilize triangle-shaped's stability to increase the vertical stability of waterstop, then through the mutual extrusion of both sides protective layer of steel reinforcement cushion in the construction, make the waterstop can not warp at the concrete placement in-process.
This scheme precipitation construction volume that can significantly reduce, engineering time can insert basement outer wall waterproof insulation and the outdoor backfill of basement in advance, provides the advantage for the construction of accelerating of engineering, simultaneously because of the post-cast strip seals in advance and gets into the indoor pumping and the clearance expense that produces of basement because of rubbish debris go into interior when having avoided conventional way, rainwater etc. reduce foundation ditch exposure time, are favorable to construction safety.
Drawings
Fig. 1 is a schematic structural view of the water stop of the present invention.
Fig. 2 is a schematic view of the overall structure of the present invention.
Wherein the reference numerals are: 1. an outer attachment portion; 2. a buried portion; 3. a connecting portion; 4. a foundation slab; 5. a concrete floor; 501. an expansion joint; 6. and (5) post-pouring the strip.
Detailed Description
Technical characteristics of the scheme can be clearly explained, and the scheme is explained through a specific implementation mode.
Referring to fig. 1 to 2, the embodiment is a bottom plate post-cast strip advanced water stop structure for underground engineering, which includes a foundation bottom plate 4, a concrete bottom plate 5, a post-cast strip 6 and a water stop strip, wherein the concrete bottom plate 5 and the foundation bottom plate 4 are fixedly connected, an expansion joint 501 is provided in the concrete bottom plate 5, and the distance between the expansion joints 501 is 30mm-40 mm.
Set up the waterstop in expansion joint 501, and the waterstop is the rubber material, and the waterstop includes outer portion of pasting 1, bury portion 2 and connecting portion 3 in, and outer portion of pasting 1 is located expansion joint 501 outside, and well portion 2 that buries is located expansion joint 501, and the waterstop is provided with a plurality of baffles, and foundation bottom plate 4 once pours with concrete bottom plate 5.
The outer 1 level of portion that pastes sets up, well bury 2 vertical settings in the middle part of outer portion that pastes, and the junction, connecting portion 3 promptly are triangle-shaped, and well portion 2 that buries is provided with globular arch, and well portion 2 both sides of burying all are provided with the baffle with the top surface of outer portion 1.
When the invention is actually used: the method comprises the following steps:
(1) a reinforced concrete bottom plate 5 with the thickness of 300mm is additionally arranged at the bottom of a post-cast strip 6 of the foundation bottom plate 4, and an expansion joint 501 with the width of 30mm-40mm is arranged in the middle of the additionally arranged concrete bottom plate 5;
(2) vertically placing the water stop in an expansion joint 501 in the middle of the concrete bottom plate 5, embedding after the bottom plate steel bars are bound, and then separating a post-cast strip 6;
(3) the foundation bottom plate and the concrete bottom plate 5 are poured once, the two sides of the foundation bottom plate and the concrete bottom plate are poured simultaneously, flexible tee joint tandem feeding is adopted, and two sides of the foundation bottom plate and the concrete bottom plate are synchronously poured and vibrated for one-time forming.
The technical features of the present invention which are not described in the above embodiments may be implemented by or using the prior art, and are not described herein again, of course, the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and variations, modifications, additions or substitutions which may be made by those skilled in the art within the spirit and scope of the present invention should also fall within the protection scope of the present invention.
Claims (4)
1. A bottom plate post-cast strip advanced water stop structure for underground engineering is characterized by comprising a foundation bottom plate (4), a concrete bottom plate (5), a post-cast strip (6) and a water stop strip;
the concrete bottom plate (5) is fixedly connected with the foundation bottom plate (4), an expansion joint (501) is arranged in the concrete bottom plate (5), and the water stop belt is arranged in the expansion joint (501);
the water stop comprises an outer attaching part (1), a middle embedding part (2) and a connecting part (3), the outer attaching part (1) is located outside the expansion joint (501), the middle embedding part (2) is located in the expansion joint (501), and the water stop is provided with a plurality of partition plates;
and the foundation bottom plate (4) and the concrete bottom plate (5) are poured at one time.
2. The advanced water stop structure of the bottom plate post-cast strip for the underground engineering as claimed in claim 1, wherein the distance between the expansion joints (501) is 30mm-40mm, and the water stop strip is made of rubber.
3. The advanced water stop structure of the floor post-cast strip for underground engineering according to claim 1, wherein the outer attaching part (1) is horizontally arranged, the middle embedded part (2) is vertically arranged in the middle of the outer attaching part (1), the connecting part (3) is triangular, the middle embedded part (2) is provided with a spherical bulge, and the two sides of the middle embedded part (2) and the top surface of the outer attaching part (1) are provided with the partition plates.
4. The construction method of the advanced water stop structure of the floor post-cast strip for the underground engineering is characterized by comprising the following steps of:
(1) a reinforced concrete bottom plate (5) with the thickness of 300mm is additionally arranged at the bottom of the post-cast strip (6) of the foundation bottom plate (4), and an expansion joint (501) with the width of 30mm-40mm is arranged in the middle of the additionally arranged concrete bottom plate (5);
(2) vertically placing the water stop belt in an expansion joint (501) in the middle of the concrete bottom plate (5), embedding after the bottom plate steel bars are bound, and then separating a post-pouring belt (6);
(3) the foundation bottom plate and the concrete bottom plate (5) are poured once, the two sides of the foundation bottom plate and the concrete bottom plate are poured simultaneously, flexible tee joint tandem feeding is adopted, and two sides of the foundation bottom plate and the concrete bottom plate are synchronously poured and vibrated for one-time forming.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111596890.3A CN114263219A (en) | 2021-12-24 | 2021-12-24 | Advanced water stop structure of bottom plate post-cast strip for underground engineering and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111596890.3A CN114263219A (en) | 2021-12-24 | 2021-12-24 | Advanced water stop structure of bottom plate post-cast strip for underground engineering and construction method |
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| Publication Number | Publication Date |
|---|---|
| CN114263219A true CN114263219A (en) | 2022-04-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111596890.3A Pending CN114263219A (en) | 2021-12-24 | 2021-12-24 | Advanced water stop structure of bottom plate post-cast strip for underground engineering and construction method |
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| Country | Link |
|---|---|
| CN (1) | CN114263219A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115126006A (en) * | 2022-06-30 | 2022-09-30 | 陕西帕源路桥建设有限公司 | Post-pouring belt water stopping mechanism for house building construction |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB504570A (en) * | 1936-12-17 | 1939-04-27 | Goodrich Co B F | Improvements in or relating to joints for pavements, roads, dams and the like, and methods of making the same |
| JP2006257732A (en) * | 2005-03-16 | 2006-09-28 | Chugoku Electric Power Co Inc:The | Protective material of waterproofing layer and its construction method |
| CN202689046U (en) * | 2012-05-18 | 2013-01-23 | 中建一局集团第三建筑有限公司 | Closed advanced water stop post-pouring belt |
| CN212452798U (en) * | 2020-05-18 | 2021-02-02 | 中铁建工集团有限公司 | Advanced water stop plugging structure for post-cast strip |
| CN112727506A (en) * | 2020-12-31 | 2021-04-30 | 中国铁路经济规划研究院有限公司 | Composite rubber water stop |
| CN113638277A (en) * | 2021-07-29 | 2021-11-12 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | High-speed railway seal coat expansion joint stagnant water structure |
-
2021
- 2021-12-24 CN CN202111596890.3A patent/CN114263219A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB504570A (en) * | 1936-12-17 | 1939-04-27 | Goodrich Co B F | Improvements in or relating to joints for pavements, roads, dams and the like, and methods of making the same |
| JP2006257732A (en) * | 2005-03-16 | 2006-09-28 | Chugoku Electric Power Co Inc:The | Protective material of waterproofing layer and its construction method |
| CN202689046U (en) * | 2012-05-18 | 2013-01-23 | 中建一局集团第三建筑有限公司 | Closed advanced water stop post-pouring belt |
| CN212452798U (en) * | 2020-05-18 | 2021-02-02 | 中铁建工集团有限公司 | Advanced water stop plugging structure for post-cast strip |
| CN112727506A (en) * | 2020-12-31 | 2021-04-30 | 中国铁路经济规划研究院有限公司 | Composite rubber water stop |
| CN113638277A (en) * | 2021-07-29 | 2021-11-12 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | High-speed railway seal coat expansion joint stagnant water structure |
Non-Patent Citations (1)
| Title |
|---|
| 孙延宗、孙继业编著: "岩巷工程施工 支护工程", 北京：冶金工业出版社, pages: 568 - 569 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115126006A (en) * | 2022-06-30 | 2022-09-30 | 陕西帕源路桥建设有限公司 | Post-pouring belt water stopping mechanism for house building construction |
| CN115126006B (en) * | 2022-06-30 | 2023-11-07 | 陕西帕源路桥建设有限公司 | Post-pouring belt water stopping mechanism for house building construction |
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| SE01 | Entry into force of request for substantive examination | ||
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Application publication date: 20220401 |