CN109610488A - A kind of form of construction work draining pressure relief device and foundation pit - Google Patents
A kind of form of construction work draining pressure relief device and foundation pit Download PDFInfo
- Publication number
- CN109610488A CN109610488A CN201811577988.2A CN201811577988A CN109610488A CN 109610488 A CN109610488 A CN 109610488A CN 201811577988 A CN201811577988 A CN 201811577988A CN 109610488 A CN109610488 A CN 109610488A
- Authority
- CN
- China
- Prior art keywords
- sandpipe
- foundation pit
- connecting tube
- pressure relief
- relief device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- E02D19/06—Restraining of underground water
-
- 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
- E02D19/06—Restraining of underground water
- E02D19/10—Restraining of underground water by lowering level of ground water
Abstract
The present invention relates to drainage of foundation pit pressure release technical fields, disclose a kind of form of construction work for draining pressure relief device and foundation pit.The draining pressure relief device is applied to building foundation pit, and the draining pressure relief device includes: no sandpipe, is embedded in the hole bottom of foundation pit, and the height of the horizontal plane where the top of the no sandpipe is lower than the height of the horizontal plane where the hole bottom of the foundation pit；Connecting tube is tightly connected with the no sandpipe, is connected with tapping pipe in the connecting tube, is provided with valve on the tapping pipe；Sealing cover is sealed in the one end of the connecting tube far from the no sandpipe.It is constructed using the device, construction cost is low, with the smallest cost, produces a desired effect.Precipitation is under control in foundation pit, saves human and material resources.The time for shortening handover foundation pit, shorten the duration.It does not need foundation soil and changes to fill out, avoid the disturbance of large area foundation soil.The destruction of blinding layer and waterproof protective layer caused by preventing because of groundwater pressure.
Description
Technical field
The present invention relates to drainage of foundation pit pressure release technical field more particularly to the construction parties of a kind of draining pressure relief device and foundation pit
Formula.
Background technique
With the development of Chinese architectural trade, with the increase of the height of building and the demand of security performance, building
Basis is deeper and deeper, and place is more and more narrower, and when ground encounters impermeable stratum, the drop of foundation pit, draining are particularly important.
Traditional approach generally use foundation pit change fill out, add french drain, increase sump mode, the method construction efficiency is low, applies
Work difficulty is big, at high cost, but also disturbs foundation soil.
Therefore, a kind of form of construction work for draining pressure relief device and foundation pit is needed, to solve the above technical problems.
Summary of the invention
The purpose of the present invention is to provide the forms of construction work of a kind of draining pressure relief device and foundation pit, with construction cost
It is low, with the smallest cost, the characteristics of saving human and material resources, shorten the duration.
To achieve this purpose, the present invention adopts the following technical scheme:
Technical solution one: a kind of draining pressure relief device is applied to building foundation pit, and the draining pressure relief device includes:
Without sandpipe, it is embedded in the hole bottom of foundation pit, and the height of the horizontal plane where the top of the no sandpipe is lower than described
The height of horizontal plane where the hole bottom of foundation pit；
Connecting tube is tightly connected with the no sandpipe, is connected with tapping pipe in the connecting tube, sets on the tapping pipe
It is equipped with valve；
Sealing cover is sealed in the one end of the connecting tube far from the no sandpipe.
Preferably, the surrounding of the no sandpipe is filled with drainage medium.
Preferably, the connecting tube is fixed on the no sandpipe by pipe collar.
Preferably, the connecting tube is provided with flange far from one end of the no sandpipe, and the sealing cover is close by bolt
Sealing is due on the flange.
Preferably, the connecting tube is coating steel pipe.
Preferably, there are two symmetrically arranged lifting lugs for setting in the connecting tube.
Preferably, the connecting tube and the no sandpipe junction are coated with sealing compound.
Technical solution two: a kind of form of construction work of foundation pit uses draining pressure relief device as described above, the construction party
Formula includes the following steps:
S1, catch pit is excavated in foundation pit, will be placed in the catch pit without sandpipe, and connecting tube is connected to the nothing
Then sandpipe fills drainage medium in no sandpipe surrounding；
S2, using drainage arrangement discharge without the ponding in sandpipe, to reduce the water level of foundation pit, construction pad while draining
Layer, waterproof layer, waterproof protective layer and reinforcement foundation；
Sealing cover is installed in the water level reduction of S3, foundation pit later, and drainpipe is connected on tapping pipe, opens simultaneously valve；
S4, valve is closed, removes drainpipe, pour the concrete of foundation pit and catch pit, and is conserved.
Beneficial effects of the present invention: being constructed using the device, can be arranged the underground water in foundation pit in time in During Initial Stage Construction
Out, it will not accumulate in waterproof layer in foundation pit, will not be made to generate protuberance because of underground water in construction waterproof layer, destroy waterproof layer.
Precipitation is efficiently controlled in foundation pit, saves human and material resources.Construction cost is low, with the smallest cost, has reached expected
Effect.The time for shortening handover foundation pit, shorten the duration.It does not need foundation soil and changes to fill out, avoid disturbing for large area foundation soil
It is dynamic.The destruction of blinding layer and waterproof protective layer caused by preventing because of groundwater pressure.
Detailed description of the invention
Structural schematic diagram when Fig. 1 is drainage of foundation pit state in the present invention；
Fig. 2 is structural schematic diagram when not pouring foundation pit in the present invention.
In figure:
1, without sandpipe；
2, connecting tube；21, lifting lug；22, flange；
3, tapping pipe；31, valve；
4, sealing cover；5, water pump；6, drainpipe；
10, foundation pit；20, drainage layer.
Specific embodiment
To further illustrate the technical scheme of the present invention below with reference to the accompanying drawings and specific embodiments.
As depicted in figs. 1 and 2, a kind of draining pressure relief device, which are mainly applied to the constructions of building foundation pit 10, especially pour
Build elevator foundation pit 10.Draining pressure relief device includes no sandpipe 1, connecting tube 2 and sealing cover 4.No sandpipe 1 is embedded in the hole of foundation pit 10
Bottom, and the height of the horizontal plane where the top without sandpipe 1 is lower than the height of the horizontal plane where the hole bottom of foundation pit 10, this implementation
At a distance of 100mm both in example.The diameter of no sandpipe 1 is 300mm.The surrounding filling drainage of the bottom end of no sandpipe 1 and connecting tube 2 is situated between
Matter forms drainage layer 20.
Connecting tube 2 is tightly connected with no sandpipe 1, and the top of no sandpipe 1 is equipped with protrusion, and raised outer diameter is less than no sandpipe
1 outer diameter.Connecting tube 2 is sheathed in the protrusion, and is coated with sealing compound in junction, then by pipe collar that connecting tube 2 is fixed
In on no sandpipe 1, the two sides up and down of pipe collar are all made of sealing compound and obturage.Connecting tube 2 in the present embodiment is DN300 galvanized steel
Pipe, the length of steel pipe are 600mm.Two symmetrically arranged lifting lugs 21 are welded in connecting tube 2, convenient for hanging when installation
Propose connecting tube 2.Drain hole is opened at the top 100mm apart from connecting tube 2, and welds tapping pipe 3, is provided with valve on tapping pipe 3
Door 31.Tapping pipe 3 in the present embodiment is DN50 coating steel pipe, and valve 31 is DN50 copper ball valve.
The top of connecting tube 2 is provided with flange 22, and sealing cover 4 is fixed on flange 22 by bolt seal, in order to enhance
The leakproofness of the two is provided with gasket between sealing cover 4 and flange 22.All welds brushing antirust paint.
The present embodiment also discloses a kind of form of construction work of foundation pit, and which employs draining pressure relief devices as described above, applies
Work mode includes the following steps:
S1, usage mining machine excavates catch pit in foundation pit 10, and hand fit clears up hole bottom and side wall, the diameter of catch pit
For 800mm, deep 800mm.It will be placed in catch pit without sandpipe 1, protruding end is placed upward, and no sandpipe 1 is placed in catch pit
Between, and repetition measurement, elevation control 100mm below bed course bottom are carried out to the absolute altitude on the top of no sandpipe 1, and connecting tube 2 is connected
It is connected to no sandpipe 1, is then located at the filling drainage medium of the part surrounding in catch pit in no sandpipe 1 and connecting tube 2 and forms drainage
Layer 20.
Underground water in S2, foundation pit 10 can converge into catch pit, then into no sandpipe 1, use drainage arrangement
(water pump 5) discharge is without the ponding in sandpipe 1, to reduce the water level (as shown in Figure 1) of foundation pit 10, construction foundation pit 10 while draining
Bed course, waterproof layer, waterproof protective layer and reinforcement foundation.
Sealing cover 4 is installed in the water level reduction of S3, foundation pit 10 later, and drainpipe 6 is connected on tapping pipe 3, is opened simultaneously
Valve 31 (as shown in Figure 2), at this time since the weight of reinforcing bar is larger, hydraulic pressure is not very greatly that the underground water in foundation pit 10 can converge
To no sandpipe 1, then since the active force of ground pressure is voluntarily discharged from drainpipe 6, waterproof layer and waterproof protective layer will not be made to produce
Raw protuberance, to destroy waterproof layer.
S4, valve 31 is closed, removes drainpipe 6, pour the concrete of foundation pit 10 and catch pit, and is conserved.At this time
Since the thickness for the concrete for needing to pour in foundation pit 10 all cooperates reinforcing bar in 600mm or more again, the pressure of underground water is not very
When big, waterproof layer, waterproof protective layer will not be made to generate protuberance.
It is constructed using the device, the underground water in foundation pit 10 can be discharged in time, will not be accumulated in base in During Initial Stage Construction
In hole, waterproof layer will not be made to generate protuberance because of underground water in construction waterproof layer, destroy waterproof layer.Precipitation obtains in foundation pit 10
It efficiently controls, saves human and material resources.Construction cost is low, with the smallest cost, produces a desired effect.Shorten friendship
The time for connecing foundation pit 10, shorten the duration.It does not need foundation soil and changes to fill out, avoid the disturbance of large area foundation soil.Prevent because
The destruction of blinding layer and waterproof protective layer caused by groundwater pressure.
Obviously, the above embodiment of the present invention is just for the sake of clearly illustrating examples made by the present invention, and being not is pair
The restriction of embodiments of the present invention.For those of ordinary skill in the art, may be used also on the basis of the above description
To make other variations or changes in different ways.There is no necessity and possibility to exhaust all the enbodiments.It is all this
Made any modifications, equivalent replacements, and improvements etc., should be included in the claims in the present invention within the spirit and principle of invention
Protection scope within.
Claims (8)
1. a kind of draining pressure relief device, which is characterized in that it is applied to building foundation pit (10), and the draining pressure relief device includes:
Without sandpipe (1), it is embedded in the hole bottom of foundation pit (10), and the height of the horizontal plane where the top of the no sandpipe (1) is low
In the height of the horizontal plane where the hole bottom of the foundation pit (10)；
Connecting tube (2) is tightly connected with the no sandpipe (1), is connected with tapping pipe (3) on the connecting tube (2), described to let out
Valve (31) are provided on water pipe (3)；
Sealing cover (4) is sealed in the one end of the connecting tube (2) far from the no sandpipe (1).
2. draining pressure relief device according to claim 1, which is characterized in that the surrounding of the no sandpipe (1) is filled with filter
Aqueous medium.
3. draining pressure relief device according to claim 1, which is characterized in that the connecting tube (2) is fixed on by pipe collar
On the no sandpipe (1).
4. draining pressure relief device according to claim 1, which is characterized in that the connecting tube (2) is far from the no sandpipe
(1) one end is provided with flange (22), and the sealing cover (4) is fixed on the flange (22) by bolt seal.
5. draining pressure relief device according to claim 1, which is characterized in that the connecting tube (2) is coating steel pipe.
6. draining pressure relief device according to claim 1, which is characterized in that there are two right for setting on the connecting tube (2)
Claim the lifting lug (21) of setting.
7. draining pressure relief device according to claim 1, which is characterized in that the connecting tube (2) and the no sandpipe (1)
Junction is coated with sealing compound.
8. a kind of form of construction work of foundation pit, which is characterized in that use such as draining pressure release of any of claims 1-7
Device, the form of construction work include the following steps:
S1, catch pit is excavated in foundation pit (10), will be placed in the catch pit without sandpipe (1), and connecting tube (2) is connected to
The no sandpipe (1) then fills drainage medium in no sandpipe (1) surrounding；
S2, using drainage arrangement discharge without the ponding in sandpipe (1), to reduce the water level of foundation pit (10), draining while, constructs
Bed course, waterproof layer, waterproof protective layer and reinforcement foundation；
The water level reduction of S3, foundation pit (10) install sealing cover (4) later, and connect drainpipe (6) on tapping pipe (3), simultaneously
It opens valve (31)；
S4, valve (31) are closed, removes drainpipe (6), pour the concrete of foundation pit (10) and catch pit, and is conserved.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811577988.2A CN109610488A (en) | 2018-12-20 | 2018-12-20 | A kind of form of construction work draining pressure relief device and foundation pit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811577988.2A CN109610488A (en) | 2018-12-20 | 2018-12-20 | A kind of form of construction work draining pressure relief device and foundation pit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109610488A true CN109610488A (en) | 2019-04-12 |
Family
ID=66011289
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811577988.2A Pending CN109610488A (en) | 2018-12-20 | 2018-12-20 | A kind of form of construction work draining pressure relief device and foundation pit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109610488A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111139839A (en) * | 2020-01-11 | 2020-05-12 | 成都高质建筑工程有限公司 | Foundation pit support system and construction method thereof |
| CN113089701A (en) * | 2021-04-15 | 2021-07-09 | 北京天润建设有限公司 | Rock foundation low-point precipitation construction process and construction device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201212148Y (en) * | 2008-07-07 | 2009-03-25 | 中建八局第二建设有限公司 | Precipitation Well seal structure in foundation slab |
| CN101768976A (en) * | 2009-12-29 | 2010-07-07 | 中建城市建设发展有限公司 | Base pit dewatering and water saving device and construction method thereof |
| JP2011256671A (en) * | 2010-06-11 | 2011-12-22 | Ohbayashi Corp | Pumping unit, soft ground improvement method, ground excavation method, contaminated soil purification method and recharge method |
| CN105672335A (en) * | 2016-01-29 | 2016-06-15 | 中国华冶科工集团有限公司 | Construction method for sump precipitation |
| CN106320353A (en) * | 2016-07-18 | 2017-01-11 | 中天建设集团有限公司 | Basement construction dewatering and drainage device and construction method thereof |
| CN207436079U (en) * | 2017-11-11 | 2018-06-01 | 中铁三局集团华东建设有限公司 | A kind of drainage for foundation pit construction only gushes device |
-
2018
- 2018-12-20 CN CN201811577988.2A patent/CN109610488A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201212148Y (en) * | 2008-07-07 | 2009-03-25 | 中建八局第二建设有限公司 | Precipitation Well seal structure in foundation slab |
| CN101768976A (en) * | 2009-12-29 | 2010-07-07 | 中建城市建设发展有限公司 | Base pit dewatering and water saving device and construction method thereof |
| JP2011256671A (en) * | 2010-06-11 | 2011-12-22 | Ohbayashi Corp | Pumping unit, soft ground improvement method, ground excavation method, contaminated soil purification method and recharge method |
| CN105672335A (en) * | 2016-01-29 | 2016-06-15 | 中国华冶科工集团有限公司 | Construction method for sump precipitation |
| CN106320353A (en) * | 2016-07-18 | 2017-01-11 | 中天建设集团有限公司 | Basement construction dewatering and drainage device and construction method thereof |
| CN207436079U (en) * | 2017-11-11 | 2018-06-01 | 中铁三局集团华东建设有限公司 | A kind of drainage for foundation pit construction only gushes device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111139839A (en) * | 2020-01-11 | 2020-05-12 | 成都高质建筑工程有限公司 | Foundation pit support system and construction method thereof |
| CN113089701A (en) * | 2021-04-15 | 2021-07-09 | 北京天润建设有限公司 | Rock foundation low-point precipitation construction process and construction device |
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Application publication date: 20190412 |