CN111119246A - Structure and method for releasing hydrostatic pressure of foundation floor - Google Patents
Structure and method for releasing hydrostatic pressure of foundation floor Download PDFInfo
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- CN111119246A CN111119246A CN202010032142.1A CN202010032142A CN111119246A CN 111119246 A CN111119246 A CN 111119246A CN 202010032142 A CN202010032142 A CN 202010032142A CN 111119246 A CN111119246 A CN 111119246A
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- reinforced concrete
- foundation
- slab
- hydrostatic pressure
- drainage
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D31/00—Protective arrangements for foundations or foundation structures; Ground foundation measures for protecting the soil or the subsoil water, e.g. preventing or counteracting oil pollution
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
-
- 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
- E02D31/10—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 soil pressure or hydraulic pressure
- E02D31/12—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 soil pressure or hydraulic pressure against upward hydraulic pressure
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- Structural Engineering (AREA)
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Abstract
本发明公开了一种基础底板静水压力释放结构及方法，该结构包括天然地基和结构底板，在天然地基上开设有排水沟，并在天然地基以及排水沟上浇筑有垫层，在垫层上按一定的间距固定安装有一组预制素混凝土支墩，在预制素混凝土支墩上铺设有钢筋混凝土预制板，在垫层与钢筋混凝土预制板之间形成排水架空层，在钢筋混凝土预制板顶部浇筑有结构底板。本发明采用钢筋混凝土预制板及预制支墩来设置排水架空层，通过排水架空层来释放基础底板的静水压力，使地下室取消了传统防水层及抗浮锚杆的设计，有效的缩短了施工周期，提高了现场施工精度，保证了施工质量，减少了人工和材料的投入，降低了施工成本。The invention discloses a structure and method for releasing hydrostatic pressure of a foundation floor. The structure includes a natural foundation and a structural floor, a drainage ditch is opened on the natural foundation, a cushion is poured on the natural foundation and the drainage ditch, and a cushion is placed on the cushion. A set of prefabricated concrete buttresses are fixedly installed at a certain distance, reinforced concrete prefabricated slabs are laid on the prefabricated concrete buttresses, a drainage overhead layer is formed between the cushion and the reinforced concrete prefabricated slab, and the top of the reinforced concrete prefabricated slab is poured There is a structural bottom plate. The invention adopts reinforced concrete prefabricated slabs and prefabricated buttresses to set up a drainage overhead layer, and releases the hydrostatic pressure of the base plate through the drainage overhead layer, so that the basement cancels the traditional waterproof layer and anti-floating anchor rod design, and effectively shortens the construction period , Improve the accuracy of on-site construction, ensure the construction quality, reduce the input of labor and materials, and reduce the construction cost.
Description
Technical Field
The invention relates to a foundation slab hydrostatic pressure release structure and a method, and belongs to the technical field of building foundation construction.
Background
At present, the anti-floating design of underground structure mostly adopts "anti" mode design, if adopt increase dead weight method, anti-floating pile or resistance to plucking stock etc. nevertheless to super large deep basal pit anti-floating design, there is the problem that underground structure expense is too high and have potential construction risk nature.
Disclosure of Invention
The invention aims to provide a foundation slab hydrostatic pressure releasing structure and a foundation slab hydrostatic pressure releasing method which are simple in structure and convenient to construct, and aims to overcome the defects in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides a foundation slab hydrostatic pressure release structure, includes natural foundation and structure bottom plate, has seted up the escape canal on natural foundation to pour the bed course on natural foundation and escape canal, according to certain interval fixed mounting have a set of prefabricated plain concrete buttress on the bed course, has laid the reinforced concrete precast slab on prefabricated plain concrete buttress, forms the drainage built on stilts layer between bed course and reinforced concrete precast slab, has pour the structure bottom plate at reinforced concrete precast slab top.
Further, the escape canal is connected with the sump, and a 2% slope is arranged on the escape canal.
Furthermore, the size of the reinforced concrete precast slab is 2000mm multiplied by 1000mm multiplied by 80mm, and the precast plain concrete buttresses are supported at four corners of the reinforced concrete precast slab.
The invention also provides a foundation slab hydrostatic pressure release method for the foundation slab hydrostatic pressure release structure, which comprises the steps of firstly, arranging drainage ditches on a natural foundation, pouring cushion layers on the natural foundation and the drainage ditches, then fixedly installing a group of prefabricated plain concrete buttresses on the cushion layers according to a certain interval, paving reinforced concrete precast slabs on the prefabricated plain concrete buttresses, thus forming drainage empty layers between the cushion layers and the reinforced concrete precast slabs, finally, pouring a structure bottom plate on the tops of the reinforced concrete precast slabs, thus collecting water permeating into the drainage empty layers to peripheral water collecting wells through the drainage ditches, and then carrying out concentrated pumping and drainage treatment on the water in the water collecting wells.
In the method, when the reinforced concrete precast slabs are laid, a cement slurry is firstly coated on gaps between adjacent reinforced concrete precast slabs, polypropylene fabric is then adhered to the gaps, and finally a cement slurry protective layer is further coated on the surfaces of the polypropylene fabric.
In the method, the height of the prefabricated plain concrete buttress is adjusted according to the actual elevation of the road surface.
Compared with the prior art, the invention has the following advantages: the invention adopts the reinforced concrete precast slabs and the precast buttresses to arrange the drainage overhead layer, releases the hydrostatic pressure of the foundation slab through the drainage overhead layer, and adopts the off-site centralized processing of the precast cover plates, thereby realizing the batch and standardization of processing and manufacturing, ensuring the mounting precision and saving the construction period. Therefore, the basement eliminates the design of the traditional waterproof layer and the anti-floating anchor rod, effectively shortens the construction period, improves the on-site construction precision, ensures the construction quality, reduces the labor and material investment, reduces the construction cost, and meets the requirement of the national construction of a conservation-minded society.
Drawings
FIG. 1 is a cross-sectional view of a schematic structural diagram of the present invention;
fig. 2 is a plan view of a schematic structure of the present invention.
Description of reference numerals: 1-natural ground base; 2-cushion layer; 3-a drainage ditch; 4-prefabricating the buttress; 5-drainage overhead layer; 6-precast reinforced concrete slab; 7-structural base plate.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings and examples.
The embodiment of the invention comprises the following steps: referring to fig. 1 and 2, the foundation slab hydrostatic pressure release structure comprises a natural foundation 1 and a structural slab 7, a drainage ditch 3 is formed in the natural foundation 1, a cushion layer 2 is poured on the natural foundation 1 and the drainage ditch 3, a group of prefabricated plain concrete buttresses 4 are fixedly installed on the cushion layer 2 according to a certain interval, a reinforced concrete precast slab 6 is paved on the prefabricated plain concrete buttresses 4, a drainage overhead layer 5 is formed between the cushion layer 2 and the reinforced concrete precast slab 6, and the structural slab 7 is poured on the top of the reinforced concrete precast slab 6. The drainage ditch 3 is connected with the sump pit, is provided with 2% slope on the drainage ditch 3, is convenient for drain. The reinforced concrete precast slab 6 has the size of 2000mm multiplied by 1000mm multiplied by 80mm, and the precast plain concrete buttresses 4 are supported at four corners of the reinforced concrete precast slab 6.
During specific construction, firstly, a drainage ditch 3 is arranged on a natural foundation 1, a cushion layer 2 is poured on the natural foundation 1 and the drainage ditch 3, then a group of prefabricated plain concrete buttresses 4 are fixedly installed on the cushion layer 2 according to a certain distance, reinforced concrete prefabricated plates 6 are paved on the prefabricated plain concrete buttresses 4, so that a drainage overhead layer 5 is formed between the cushion layer 2 and the reinforced concrete prefabricated plates 6, and finally, a structural bottom plate 7 is poured on the tops of the reinforced concrete prefabricated plates 6, so that water, which permeates into the drainage overhead layer 5, of a substrate is collected into peripheral water collecting wells through the drainage ditch 3, and then, the water in the water collecting wells is subjected to concentrated pumping and drainage treatment. The height of prefabricated plain concrete buttress 4 is adjusted with the actual elevation in road surface, guarantees 7 tops of structure bottom plate and road surface parallel and level.
When the reinforced concrete precast slabs 6 are laid, a cement paste is firstly coated on the gaps between the adjacent reinforced concrete precast slabs 6, then polypropylene fabric is adhered on the gaps, and finally a cement paste protective layer is coated on the surfaces of the polypropylene fabric.
In conclusion, the invention adopts the drainage overhead layer 5 to drain water, so that the hydrostatic pressure release structure of the foundation slab adopts the 'releasing' concept to process the water buoyancy, the traditional waterproof layer and the anti-floating anchor rod are omitted from the basement, the construction period is effectively shortened, the on-site construction precision is improved, the construction quality is ensured, the investment of labor and materials is reduced, the construction cost is reduced, and the requirements of the national construction of a conservation-minded society are met. Meanwhile, the steel bar construction of the structural bottom plate 7 can directly utilize the reinforced concrete precast slab 6 as a template for construction, a concrete cushion layer is not required to be constructed, and the construction of a foundation bottom plate waterproof coating and a coiled material is cancelled due to the existence of the drainage overhead layer 5, so that the construction cost is saved, and the construction efficiency is improved.
Claims (6)
1. A foundation slab hydrostatic pressure relief structure, includes natural ground (1) and structure bottom plate (7), its characterized in that: the drainage ditch is characterized in that the drainage ditch (3) is formed in the natural foundation (1), the cushion layer (2) is poured on the natural foundation (1) and the drainage ditch (3), a set of prefabricated plain concrete buttresses (4) are fixedly installed on the cushion layer (2) according to a certain distance, reinforced concrete precast slabs (6) are paved on the prefabricated plain concrete buttresses (4), a drainage overhead layer (5) is formed between the cushion layer (2) and the reinforced concrete precast slabs (6), and a structural bottom plate (7) is poured at the top of each reinforced concrete precast slab (6).
2. The foundation slab hydrostatic pressure relief structure of claim 1, wherein: the drainage ditch (3) is connected with the water collecting well, and 2% of gradient is arranged on the drainage ditch (3).
3. The foundation slab hydrostatic pressure relief structure and method of claim 1, wherein: the reinforced concrete precast slab (6) has the size of 2000mm multiplied by 1000mm multiplied by 80mm, and the precast plain concrete buttresses (4) are supported at four corners of the reinforced concrete precast slab (6).
4. A foundation slab hydrostatic pressure relief method for the foundation slab hydrostatic pressure relief structure defined in any one of claims 1 to 3, characterized by: firstly, a drainage ditch (3) is arranged on a natural foundation (1), a cushion layer (2) is poured on the natural foundation (1) and the drainage ditch (3), then a group of prefabricated plain concrete buttresses (4) are fixedly installed on the cushion layer (2) according to a certain distance, a reinforced concrete precast slab (6) is paved on the prefabricated plain concrete buttresses (4), a drainage overhead layer (5) is formed between the cushion layer (2) and the reinforced concrete precast slab (6), and finally a structural bottom plate (7) is poured on the top of the reinforced concrete precast slab (6), so that water with a base penetrating into the drainage overhead layer (5) is collected into peripheral water collecting wells through the drainage ditch (3), and then the water in the water collecting wells is subjected to concentrated pumping treatment.
5. The foundation slab hydrostatic pressure relief method of claim 4, wherein: when the reinforced concrete precast slabs (6) are laid, a cement slurry is firstly coated on gaps between the adjacent reinforced concrete precast slabs (6), polypropylene fabric is then adhered to the gaps, and finally a cement slurry protective layer is coated on the surface of the polypropylene fabric.
6. The foundation slab hydrostatic pressure relief method of claim 4, wherein: and the height of the prefabricated plain concrete buttress (4) is adjusted according to the actual elevation of the road surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010032142.1A CN111119246A (en) | 2020-01-13 | 2020-01-13 | Structure and method for releasing hydrostatic pressure of foundation floor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010032142.1A CN111119246A (en) | 2020-01-13 | 2020-01-13 | Structure and method for releasing hydrostatic pressure of foundation floor |
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| Publication Number | Publication Date |
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| CN111119246A true CN111119246A (en) | 2020-05-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010032142.1A Pending CN111119246A (en) | 2020-01-13 | 2020-01-13 | Structure and method for releasing hydrostatic pressure of foundation floor |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR19990023522A (en) * | 1997-08-11 | 1999-03-25 | 최정웅 | Moisture proof structure and moisture proofing method of basement |
| JP2003278165A (en) * | 2003-04-23 | 2003-10-02 | Kazuhiro Urata | Drainage box for shallow sump |
| KR20130116517A (en) * | 2012-04-16 | 2013-10-24 | 홍종화 | Insulating drainage board |
| CN105569095A (en) * | 2016-02-29 | 2016-05-11 | 华南理工大学 | Interception and drainage pressure-reduction anti-floating system |
| CN206844173U (en) * | 2017-05-10 | 2018-01-05 | 北京筑田建筑装饰工程有限公司 | A kind of moisture-proof construction for basement |
| CN108374438A (en) * | 2018-04-13 | 2018-08-07 | 沈阳建筑大学 | Anti-floating structure of underground building floor |
| CN208748710U (en) * | 2018-09-12 | 2019-04-16 | 中铁一院集团山东建筑设计院有限公司 | A kind of underground engineering sluicing decompression float Structure |
| CN211948585U (en) * | 2020-01-13 | 2020-11-17 | 中建四局华南建设有限公司 | Foundation slab hydrostatic pressure release structure |
-
2020
- 2020-01-13 CN CN202010032142.1A patent/CN111119246A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR19990023522A (en) * | 1997-08-11 | 1999-03-25 | 최정웅 | Moisture proof structure and moisture proofing method of basement |
| JP2003278165A (en) * | 2003-04-23 | 2003-10-02 | Kazuhiro Urata | Drainage box for shallow sump |
| KR20130116517A (en) * | 2012-04-16 | 2013-10-24 | 홍종화 | Insulating drainage board |
| CN105569095A (en) * | 2016-02-29 | 2016-05-11 | 华南理工大学 | Interception and drainage pressure-reduction anti-floating system |
| CN206844173U (en) * | 2017-05-10 | 2018-01-05 | 北京筑田建筑装饰工程有限公司 | A kind of moisture-proof construction for basement |
| CN108374438A (en) * | 2018-04-13 | 2018-08-07 | 沈阳建筑大学 | Anti-floating structure of underground building floor |
| CN208748710U (en) * | 2018-09-12 | 2019-04-16 | 中铁一院集团山东建筑设计院有限公司 | A kind of underground engineering sluicing decompression float Structure |
| CN211948585U (en) * | 2020-01-13 | 2020-11-17 | 中建四局华南建设有限公司 | Foundation slab hydrostatic pressure release structure |
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