CN212715050U - Anti pressure relief system that floats of basement bottom plate - Google Patents
Anti pressure relief system that floats of basement bottom plate Download PDFInfo
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- CN212715050U CN212715050U CN202020470704.6U CN202020470704U CN212715050U CN 212715050 U CN212715050 U CN 212715050U CN 202020470704 U CN202020470704 U CN 202020470704U CN 212715050 U CN212715050 U CN 212715050U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 106
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 101
- 239000010959 steel Substances 0.000 claims abstract description 101
- 238000007667 floating Methods 0.000 claims abstract description 12
- 230000006837 decompression Effects 0.000 claims abstract description 8
- 238000003466 welding Methods 0.000 claims description 9
- 239000002689 soil Substances 0.000 claims description 4
- 230000003014 reinforcing effect Effects 0.000 claims description 2
- 238000001914 filtration Methods 0.000 abstract description 6
- 238000001556 precipitation Methods 0.000 abstract description 5
- 239000003673 groundwater Substances 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 238000005086 pumping Methods 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 8
- 238000010276 construction Methods 0.000 description 7
- 238000007789 sealing Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
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- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Abstract
The utility model discloses an anti decompression system that floats of basement bottom plate through installing steel sleeve (internally mounted seal ring and double-deck trompil steel sheet intussuseption tree palm water filtration system), manometer, stagnant water valve and drain pipe etc. on precipitation well position, takes to dredge and not stifled mode to the groundwater under basement raft foundation, forms the anti decompression drainage system that floats of basement bottom plate that has the drainage effect concurrently. When the underground water pressure reaches a certain pressure, the system starts the self drainage system to automatically drain water, so that the aim of reducing the water pressure borne by the bottom plate of the ground reservoir is fulfilled. The water pressure is monitored through the water pressure meter, and when the water pressure meets the anti-floating design requirement, the side water stop valve is opened, so that the aim of reducing pressure and resisting floating is fulfilled. By the method, a dewatering pump is not needed for pumping water, and the engineering cost is reduced.
Description
Technical Field
The utility model relates to a basement basis raft anti-superficial relief pressure system especially relates to groundwater and enriches the area and anti superficial less raft basis of design value anti superficial relief pressure system.
Background
At present, in the field of on-site building construction, the structural building with the basement adopting the raft foundation can consider the anti-floating design of the basement in the design process. In the actual construction process, the retention and the plugging of the foundation pit dewatering well are weak links of the anti-floating design of the structure. When the traditional dewatering well is sealed, the underground water level is lowered to 500mm below the elevation of a base generally during basic construction, and dewatering can be stopped after the construction of the top of the first floor of the tower is finished and the earth covering of the top and the bottom of an underground chamber is finished. For the group residence projects, the basement area is large, the number of precipitation wells is large, and particularly in the areas with abundant underground water, the precipitation pump in the precipitation well can work continuously, the precipitation time is long, and the cost is high.
Disclosure of Invention
An object of the utility model is to overcome prior art's shortcoming, provide an anti pressure relief system that floats of basement bottom plate that produces quality safety hidden danger because of the basement basis raft board that produces of sealing in advance receives buoyancy to influence.
The utility model discloses a basement bottom plate anti-floating decompression system, which comprises a steel sleeve, wherein an external water stop ring is welded on the outer wall of the lower part of the steel sleeve in the circumferential direction, and an internal water stop ring is welded on the inner wall of a steel sleeve above the external water stop ring and in the circumferential direction of the inner wall of the steel sleeve;
a filter plate is arranged on the inner wall of the steel sleeve above the internal water stop ring, the filter plate comprises a lower steel plate provided with a water drainage hole and an upper steel plate which is arranged above the lower steel plate and provided with the water drainage hole, and tree palm is filled between the lower steel plate and the upper steel plate; the outer edges of the upper layer steel plate and the lower layer steel plate of the filter plate are respectively fixed with the inner wall of the steel sleeve in a full-welding mode along the circumferential direction; the top wall of the steel sleeve is communicated with a steel cover plate with a middle water pipe, the steel cover plate is welded on the top wall of the steel sleeve along the horizontal direction, one side water pipe is welded at the position of the opening of the side wall of the top of the steel sleeve, so that a water inlet of the side water pipe is communicated with the opening of the top of the steel sleeve, the lower part of the steel sleeve is hooped and sleeved on the outer wall of the upper part of the constructed basement dewatering well along the vertical direction, the outer part of the steel sleeve at the position below the bottom surface of bedding concrete is fixed by adopting soil, and the bedding concrete is poured at; the bed course concrete on the ligature have the bottom plate reinforcing bar and pour raft board concrete, locate to install manometer and first stagnant water valve respectively near the water inlet of lateral part water pipe, install the second stagnant water valve on middle water pipe, the delivery port of middle water pipe and lateral part water pipe respectively with the drain pipe intercommunication.
Compared with the prior art, the utility model has the advantages that: the construction method of traditional dewatering well drainage is cancelled, underground water pressure is utilized, underground water is drained in a dredging and non-blocking mode, and the risk that the basement raft floats upwards or even is damaged due to the fact that underground water pressure is too high is effectively avoided through the drainage port with the pressure gauge. The system has the functions of drainage and anti-floating decompression. When the underground water pressure reaches a certain pressure, the system starts the self drainage system to automatically drain water, so that the aim of reducing the floating caused by the water pressure on the bottom plate of the ground reservoir is fulfilled.
Drawings
FIG. 1 is a cross-sectional view of the anti-floating decompression system of the basement bottom plate of the present invention;
FIG. 2 is a top view of a filter plate in the system shown in FIG. 1;
fig. 3 is a cross-sectional view of a filter plate in the system shown in fig. 1.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
As shown in the attached drawings 1-3, the anti-floating decompression system of the basement bottom plate of the utility model comprises a steel sleeve 2, an external water stop ring 5 is welded on the outer wall of the lower part of the steel sleeve 2 along the circumferential direction, and an internal water stop ring 6 is welded on the inner wall of the steel sleeve 2 above the external water stop ring 5 and along the circumferential direction of the inner wall of the steel sleeve 2;
a filter plate 7 is arranged on the inner wall of the steel sleeve 2 above the internal water stop ring 6, the filter plate comprises a lower steel plate 7-2 provided with a water drainage hole 7-1 and an upper steel plate 7-4 which is arranged above the lower steel plate 7-2 and provided with the water drainage hole, and tree palm 7-3 is filled between the lower steel plate 7-2 and the upper steel plate 7-4; preferably, the lower steel plate 7-2 and the upper steel plate 7-4 are conical, and the conical shape can be used for enabling silt in water to move towards the direction of the pipe wall through water pressure, so that the filtering load of the filtering layer is reduced.
The outer edges of the upper layer steel plate 7-4 and the lower layer steel plate 7-2 of the filter plate 7 are respectively fixed with the inner wall of the steel sleeve 2 in a full welding mode along the circumferential direction;
the steel cover plate 10 with the top wall communicated with the middle water pipe 12-1 is welded on the top wall of the steel sleeve 2 along the horizontal direction, and the lateral water pipe 12-2 is welded at the opening of the lateral wall of the top of the steel sleeve 2, so that the water inlet of the lateral water pipe 12-2 is communicated with the opening at the top of the steel sleeve 2.
The lower part of the steel sleeve 2 is sleeved with a hoop in the vertical direction (the lap joint length of the steel sleeve and the hoop is usually 300mm) on the outer wall of the upper part of the constructed basement dewatering well 1, the outer part of the steel sleeve 2 below the bottom surface of bedding concrete (the position is preset according to the construction design) is fixed by adopting soil, and the lower part of the set position of the basement raft is poured with bedding concrete 3; and binding bottom plate steel bars on the cushion layer concrete 3 and pouring raft plate concrete 4. A pressure gauge 9 and a first water stop valve 8-1 are respectively arranged at a water inlet close to the lateral water pipe 12-2, a second water stop valve 11 is arranged on the middle water pipe 12-1, and water outlets of the middle water pipe 12-1 and the lateral water pipe 12-2 are respectively communicated with a water discharge pipe 13.
The utility model discloses a construction method as follows:
the method comprises the following steps of firstly, processing the steel sleeve structure, and specifically:
firstly, welding an external water stop ring 5 on a steel sleeve 2 along the circumferential direction of the outer wall of the lower part of the steel sleeve 2, and welding an internal water stop ring 6 on the inner wall of the steel sleeve 2 below the external water stop ring 5 along the circumferential direction of the inner wall of the steel sleeve 2;
secondly, a filter plate 7 is arranged on the inner wall of the steel sleeve 2 above the internal water stop ring 6, the filter plate comprises a lower steel plate 7-2 provided with a water drainage hole 7-1 and an upper steel plate 7-4 which is arranged above the lower steel plate 7-2 and provided with the water drainage hole, and tree palm 7-3 is filled between the lower steel plate 7-2 and the upper steel plate 7-4; preferably, the lower steel plate 7-2 and the upper steel plate 7-4 are conical, and the conical shape can be used for enabling silt in water to move towards the direction of the pipe wall through water pressure, so that the filtering load of the filtering layer is reduced.
Thirdly, the outer edges of the upper steel plate 7-4 and the lower steel plate 7-2 of the filter plate 7 are respectively fixed with the inner wall of the steel sleeve 2 in a full welding mode in the circumferential direction;
fourthly, welding the steel cover plate 10 with the middle water pipe 12-1 communicated with the top wall on the top wall of the steel sleeve 2 along the horizontal direction, and welding a lateral water pipe 12-2 to the opening of the side wall of the top of the steel sleeve 2 to enable the water inlet of the lateral water pipe 12-2 to be communicated with the opening of the top of the steel sleeve 2.
Step two, sleeving a hoop at the lower part of the steel sleeve 2 on the outer wall of the upper part of the constructed basement dewatering well 1 along the vertical direction (usually, the lapping length of the steel sleeve and the lapping length of the steel sleeve are 300mm), fixing the outer part of the steel sleeve below the bottom surface of bedding concrete (the position is set according to the construction design in advance) by adopting soil, and then pouring bedding concrete 3 at the lower part of the position of a basement raft;
and step three, binding bottom plate steel bars on the cushion layer concrete 3 and pouring raft plate concrete 4.
After the strength of the raft plate concrete reaches 100%, respectively installing a pressure gauge 9 and a first water stop valve 8-1 at a water inlet close to the side water pipe 12-2, installing a second water stop valve 11 on the middle water pipe 12-1, and respectively communicating the water outlets of the middle water pipe 12-1 and the side water pipe 12-2 with a water drainage pipe 13;
and step five, opening a second water stop valve 11, allowing groundwater to enter the steel sleeve 2 from the dewatering well under the action of the underground water pressure, discharging the discharged water to the field water collecting well through a water discharge pipe 13, filtering sand, stones and impurities in the water by using tree palm 7-3 in the filter plate 7, and opening the first water stop valve 8 to release the pressure when the numerical value of the pressure gauge 9 reaches a designed anti-floating pressure value so as to ensure the integral anti-floating effect of the basement.
Step six, after the well sealing condition (completion of earth backfilling of a top plate of the basement, completion of a ground surface layer of a basement floor and completion of a main structure) is achieved, cutting and removing the steel cover plate 10, the side water pipes 12-2 and the filter plate 7, and plugging the open holes in the side wall of the top of the steel sleeve 2;
and step seven, pumping the water level to 500mm below the bottom surface of the bedding concrete by using a water pump, and filling plugging materials (clay balls) into the steel sleeve to 200mm below the bottom surface of the bedding concrete. Pouring micro-expansion waterproof concrete on the upper part of the plugging material to the position below the inner water stop ring 6, and welding the micro-expansion waterproof concrete with the inner water stop ring 6 by using a steel plate;
and step eight, pouring concrete into the steel sleeve 2 at the upper part of the steel plate, and completing well sealing.
Claims (2)
1. Anti decompression system that floats of basement bottom plate includes steel casing pipe, its characterized in that: an external water stop ring is welded on the circumferential direction of the outer wall of the lower part of the steel sleeve, and an internal water stop ring is welded on the inner wall of the steel sleeve above the external water stop ring and along the circumferential direction of the inner wall of the steel sleeve;
a filter plate is arranged on the inner wall of the steel sleeve above the internal water stop ring, the filter plate comprises a lower steel plate provided with a water drainage hole and an upper steel plate which is arranged above the lower steel plate and provided with the water drainage hole, and tree palm is filled between the lower steel plate and the upper steel plate; the outer edges of the upper layer steel plate and the lower layer steel plate of the filter plate are respectively fixed with the inner wall of the steel sleeve in a full-welding mode along the circumferential direction; the top wall of the steel sleeve is communicated with a steel cover plate with a middle water pipe, the steel cover plate is welded on the top wall of the steel sleeve along the horizontal direction, one side water pipe is welded at the position of the opening of the side wall of the top of the steel sleeve, so that a water inlet of the side water pipe is communicated with the opening of the top of the steel sleeve, the lower part of the steel sleeve is hooped and sleeved on the outer wall of the upper part of the constructed basement dewatering well along the vertical direction, the outer part of the steel sleeve at the position below the bottom surface of bedding concrete is fixed by adopting soil, and the bedding concrete is poured at; the bed course concrete on the ligature have the bottom plate reinforcing bar and pour raft board concrete, locate to install manometer and first stagnant water valve respectively near the water inlet of lateral part water pipe, install the second stagnant water valve on middle water pipe, the delivery port of middle water pipe and lateral part water pipe respectively with the drain pipe intercommunication.
2. The anti-floating decompression system of basement floor according to claim 1, characterized in that: the lower layer steel plate and the upper layer steel plate are both conical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020470704.6U CN212715050U (en) | 2020-04-02 | 2020-04-02 | Anti pressure relief system that floats of basement bottom plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020470704.6U CN212715050U (en) | 2020-04-02 | 2020-04-02 | Anti pressure relief system that floats of basement bottom plate |
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| Publication Number | Publication Date |
|---|---|
| CN212715050U true CN212715050U (en) | 2021-03-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020470704.6U Active CN212715050U (en) | 2020-04-02 | 2020-04-02 | Anti pressure relief system that floats of basement bottom plate |
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| CN (1) | CN212715050U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113463696A (en) * | 2021-04-21 | 2021-10-01 | 成都四海岩土工程有限公司 | Strong permeable stratum anti-drainage combined basement anti-floating structure and control method |
-
2020
- 2020-04-02 CN CN202020470704.6U patent/CN212715050U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113463696A (en) * | 2021-04-21 | 2021-10-01 | 成都四海岩土工程有限公司 | Strong permeable stratum anti-drainage combined basement anti-floating structure and control method |
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| GR01 | Patent grant | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20210415 Granted publication date: 20210316 |
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| PD01 | Discharge of preservation of patent |
Date of cancellation: 20240109 Granted publication date: 20210316 |
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