CN117552475A - Underground anti-floating structure capable of flexibly resisting buoyancy of underground water and construction method thereof - Google Patents
Underground anti-floating structure capable of flexibly resisting buoyancy of underground water and construction method thereof Download PDFInfo
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- CN117552475A CN117552475A CN202311362362.0A CN202311362362A CN117552475A CN 117552475 A CN117552475 A CN 117552475A CN 202311362362 A CN202311362362 A CN 202311362362A CN 117552475 A CN117552475 A CN 117552475A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 188
- 238000007667 floating Methods 0.000 title claims abstract description 71
- 238000010276 construction Methods 0.000 title claims abstract description 26
- 238000007599 discharging Methods 0.000 claims abstract description 6
- 229910000831 Steel Inorganic materials 0.000 claims description 31
- 239000010959 steel Substances 0.000 claims description 31
- 230000002787 reinforcement Effects 0.000 claims description 26
- 239000004575 stone Substances 0.000 claims description 12
- 239000002245 particle Substances 0.000 claims description 9
- 239000002689 soil Substances 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 8
- 239000011435 rock Substances 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 239000003673 groundwater Substances 0.000 description 11
- 230000001502 supplementing effect Effects 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 238000013461 design Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000000919 ceramic Substances 0.000 description 2
- 230000006837 decompression Effects 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000004745 nonwoven fabric Substances 0.000 description 2
- 239000002861 polymer material Substances 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012552 review Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Classifications
-
- 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
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/74—Means for anchoring structural elements or bulkheads
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F3/00—Sewer pipe-line systems
- E03F3/02—Arrangement of sewer pipe-lines or pipe-line systems
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/10—Collecting-tanks; Equalising-tanks for regulating the run-off; Laying-up basins
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Structural Engineering (AREA)
- Hydrology & Water Resources (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Water Supply & Treatment (AREA)
- Environmental & Geological Engineering (AREA)
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Abstract
The invention discloses an underground anti-floating structure capable of flexibly resisting the buoyancy of underground water and a construction method thereof, wherein the underground anti-floating structure comprises an anti-floating anchor rod connected with a basement bottom plate and a pressure relief structure arranged at the bottom side of the basement bottom plate; when the underground anti-floating water level is higher than the designed underground water level of the building basement, the pressure relief structure is started, and the pressure relief and discharging of the underground water are completed. According to the underground anti-floating structure, the anti-floating anchor rod connected with the basement bottom plate is used for realizing the rigid anti-floating of the basement bottom plate, and the underground water is discharged outside through the pressure relief structure under the preset condition, so that the underground water level is reduced, and the flexible anti-floating of the basement bottom plate is realized. Therefore, the floating resistance problem of the basement bottom plate is solved by means of hardness and softness. Meanwhile, the underground water resource is utilized to realize the water for fire control and greening.
Description
Technical Field
The invention belongs to the technical field of building anti-floating, and particularly relates to an underground anti-floating structure capable of flexibly resisting the buoyancy of underground water and a construction method thereof.
Background
Along with the continuous development of urban construction to underground space, the anti-floating technology of underground building structures is continuously updated, and the existing anti-floating technology mainly aims at resisting, such as anti-floating piles and anti-floating anchor rods, and mainly aims at resisting the buoyancy of underground water by the pulling force of the anchor rods, and belongs to rigid anti-floating.
However, the groundwater level is changed along with the climate environment and seasons, the selection of the groundwater level is generally a basis for determining the design of the pulling resistance, the investment economy and the scheme reliability are determined by the selection of the groundwater level, the groundwater level is selected to be high, the anti-floating technology is required to be conserved, the required construction cost is high, and the probability of anti-floating failure is low; the anti-floating water level is selected to be low, the anti-floating design is weak, and the probability of anti-floating failure is high.
At present, the anti-floating failure cases are that the basement bottom plate is overturned by groundwater, even the parking space is soaked in water, so that extremely bad social influence is caused, the worry of people on building quality is initiated, the brand image of a building enterprise is further influenced, and complaints are frequently generated.
Disclosure of Invention
The invention aims at: in order to overcome the problems in the prior art, the invention discloses a flexible underground anti-floating structure for resisting the buoyancy of underground water and a construction method thereof.
On the one hand, the aim of the invention is achieved by the following technical scheme:
an underground anti-floating structure for flexibly resisting the buoyancy of underground water, which comprises an anti-floating anchor rod connected with a basement bottom plate and a pressure relief structure arranged at the bottom side of the basement bottom plate;
when the underground anti-floating water level is higher than the designed underground water level of the building basement, the pressure relief structure is started, and the pressure relief and discharging of the underground water are completed.
According to a preferred embodiment, the pressure relief structure comprises: the water collecting pit is located at the bottom side of the basement bottom plate and arranged in the underground rock soil layer, one end of the pressure relief water pipe stretches into the water collecting pit, and the other end of the pressure relief water pipe penetrates through the basement bottom plate and is communicated with a fire-fighting pool of the basement.
According to a preferred embodiment, there is the steel reinforcement cage in the pit body edge of sump pit, the steel reinforcement cage intussuseption is filled with a plurality of stones, and the particle diameter of filled stones reduces in proper order by steel reinforcement cage edge to steel reinforcement cage central direction, just the diversion tip of pressure release water pipe sets up in the center of steel reinforcement cage.
According to a preferred embodiment, a waterproof structure is arranged between the water collection pit and the basement bottom plate, the pressure relief water pipes penetrate through the waterproof structure, and the waterproof structure is distributed by taking the pressure relief water pipes as an axis.
According to a preferred embodiment, the waterproof structure is provided with a bottom plate cushion layer, a waterproof layer and a pouring structure body in sequence from the water collecting pit to the bottom plate of the basement.
According to a preferred embodiment, the outer side wall of the pressure relief water pipe, which is positioned in the pouring structure body, is provided with a plurality of annular water stop steel plates.
According to a preferred embodiment, a first valve body and a second valve body are sequentially arranged on the pressure relief water pipe positioned in the space part of the basement, the first valve body is arranged close to the basement bottom plate, and the second valve body is positioned at the water outlet of the pressure relief water pipe.
According to a preferred embodiment, the first valve body is a mechanical valve and the second valve body is a pressure valve.
According to a preferred embodiment, the basement space is further provided with an overflow water tank, the side wall of the top of the fire water tank is provided with an overflow water pipe, and the water outlet end of the overflow water pipe is communicated with the overflow water tank; the overflow water tank is externally connected with a drainage pump.
In another aspect, the invention also discloses:
the construction method of the underground anti-floating structure comprises the following steps:
s1: the method comprises the steps of pit construction, digging a pit body with proper size in an underground rock soil layer, installing a reinforcement cage in the pit body, filling stones with a certain grain size proportion in the reinforcement cage, sequentially reducing grain sizes from edge to middle, embedding a pressure relief water pipe, and arranging a filtering structure at a water inlet of the pressure relief water pipe and at the center of the reinforcement cage;
s2: constructing a waterproof structure on the top side of the water collection pit, sequentially constructing a bottom plate cushion layer, a waterproof layer and a pouring body, and arranging a plurality of annular water stop steel plates on the outer side wall of the pressure relief water pipe positioned in the pouring structure body;
s3: constructing a basement bottom plate, constructing and pouring the basement bottom plate on the top side of the waterproof structure, and constructing an anti-floating anchor rod to be connected with the basement bottom plate so as to realize the pull connection of the anti-floating anchor rod to the basement bottom plate;
s4: a fire-fighting water pool and an overflow pool are constructed above a basement bottom plate, and the outlet end of a pressure relief water pipe is arranged in the fire-fighting water pool.
The foregoing inventive concepts and various further alternatives thereof may be freely combined to form multiple concepts, all of which are contemplated and claimed herein. Various combinations will be apparent to those skilled in the art from a review of the present disclosure, and are not intended to be exhaustive or all of the present disclosure.
The invention has the beneficial effects that: the underground anti-floating structure realizes the rigid anti-floating of the basement bottom plate 114 through the anti-floating anchor rods 113 connected with the basement bottom plate 114, reduces the underground water level through the pressure relief of the underground water discharged outside of the pressure relief structure under the preset condition, and realizes the flexible anti-floating of the basement bottom plate 114. Therefore, the floating resistance problem of the basement bottom plate is solved by means of hardness and softness. Meanwhile, the underground water resource is utilized to realize the water for fire control and greening.
Drawings
FIG. 1 is a schematic structural view of an underground anti-floating structure of the present invention flexibly resisting the buoyancy of groundwater;
the device comprises a water collecting pit, a steel reinforcement cage, a bottom plate cushion layer, a waterproof layer, a water stop steel plate, a pressure relief water pipe, a first valve body, a second valve body, a municipal water supplementing pipe, a fire water pump, a overflow water pipe, a ball float valve, a drainage pump, a 113-anti-floating anchor rod and a basement bottom plate, wherein the water collecting pit is 100, the steel reinforcement cage is 101, the bottom plate cushion layer is 102, the waterproof layer is 103, the water stop steel plate is 104, the pressure relief water pipe is 105, the first valve body is 106, the second valve body is 107, the municipal water supplementing pipe is 108, the fire water pump is 109, the overflow water pipe is 110, the ball float valve is 111, the drainage pump is 112, the anti-floating anchor rod is 113, and the basement bottom plate is 114.
Detailed Description
Other advantages and effects of the present invention will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present invention with reference to specific examples. The invention may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present invention. It should be noted that the following embodiments and features in the embodiments may be combined with each other without conflict.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present invention, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, are merely for convenience of describing the present invention and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal," "vertical," "overhang," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In addition, in the present invention, if a specific structure, connection relationship, position relationship, power source relationship, etc. are not specifically written, the structure, connection relationship, position relationship, power source relationship, etc. related to the present invention can be known by those skilled in the art without any creative effort.
Example 1:
referring to FIG. 1, there is shown a flexible, groundwater buoyancy-resistant subsurface structure comprising anti-floating anchors 113 attached to a basement floor 114, and pressure relief structures disposed on the underside of basement floor 114; when the underground anti-floating water level is higher than the designed underground water level of the building basement, the pressure relief structure is started, and the pressure relief and discharging of the underground water are completed.
That is, the anti-floating of the basement bottom plate 114 is realized by the anti-floating anchor 113 connected with the basement bottom plate 114, the groundwater level is reduced by the decompression and the discharge of the groundwater under the preset condition of the decompression structure, and the flexible anti-floating of the basement bottom plate 114 is realized. Therefore, the floating resistance problem of the basement bottom plate is solved by means of hardness and softness.
Preferably, the pressure relief structure comprises: the water collection pit 100 and the pressure relief water pipe 105, the water collection pit 100 is located at the bottom side of the basement bottom plate 114 and is arranged in the underground rock soil layer, one end of the pressure relief water pipe 105 stretches into the water collection pit 100, and the other end of the pressure relief water pipe penetrates through the basement bottom plate 114 and is communicated with a fire-fighting pool of the basement.
There is steel reinforcement cage 101 pit body edge department of sump pit 100, steel reinforcement cage 101 intussuseption is filled with a plurality of stones, and the particle diameter of the stone of filling reduces in proper order by steel reinforcement cage 101 edge to steel reinforcement cage 101 central direction, just the diversion tip of pressure release water pipe 105 sets up in the center of steel reinforcement cage 101.
The pre-buried pressure relief water pipe 105 is wrapped with a steel wire mesh and non-woven fabrics, so that the phenomenon that the underground support soil body falls into a cavity due to the fact that fine sand soil is taken away by water flow in the water drain pipe is prevented. Other filter materials, such as ceramic particles, activated carbon particles, other chemical fiber polymer materials, and the like, can also be used in the sump 100.
Preferably, a waterproof structure is disposed between the sump 100 and the basement bottom plate 114, the pressure-releasing water pipe 105 penetrates through the waterproof structure, and the waterproof structure is disposed with the pressure-releasing water pipe 105 as an axis. By providing a waterproof construction, the likelihood of groundwater bursting through the basement floor 114 along the direction of the pressure relief water pipe 105 or its side walls is avoided, and waterproof and pressure resistance is improved.
Preferably, the waterproof structure is provided with the floor mat 102, the waterproof layer 103 and the casting structure in this order from the sump 100 to the basement floor 114.
Further, the outer side wall of the pressure relief water pipe 105, which is positioned in the pouring structure body, is provided with a plurality of annular water stop steel plates 104. Prevent groundwater from flowing out along the outer wall of the pipeline and the seam of the water-resistant plate to damage the structure.
Preferably, a first valve body 106 and a second valve body 107 are sequentially arranged on the pressure relief water pipe 105 positioned in the space part of the basement, the first valve body 106 is positioned close to the basement bottom plate 114, and the second valve body 107 is positioned at the water outlet of the pressure relief water pipe 105. The first valve body 106 is a mechanical valve and the second valve body 107 is a pressure valve.
Preferably, the basement space is also provided with an overflow water tank, the side wall of the top of the fire water tank is provided with an overflow water pipe 110, and the water outlet end of the overflow water pipe 110 is communicated with the overflow water tank; the overflow sump is externally connected with a drain pump 112.
Example 2
On the basis of the embodiment 1, the invention also discloses a construction method of the underground anti-floating structure, which comprises the following steps:
s1: the construction of the water collection pit 100 is that a water collection pit 100 body with proper size is dug in an underground rock soil layer, a steel reinforcement cage 101 is arranged in the water collection pit 100 body, stones with certain grain size proportion are filled in the steel reinforcement cage 101, grain sizes from edge to middle are sequentially reduced, a pressure relief water pipe 105 is buried, and a water inlet of the pressure relief water pipe 105 is provided with a filtering structure and is arranged at the center position of the steel reinforcement cage 101.
S2: the waterproof construction is constructed on the top side of the water collection pit 100, the bottom plate cushion layer 102, the waterproof layer 103 and the pouring body are sequentially constructed, and a plurality of annular water stop steel plates 104 are arranged on the outer side wall of the pressure relief water pipe 105 positioned in the pouring structure body.
S3: constructing a basement bottom plate 114, constructing and pouring the basement bottom plate 114 on the top side of the waterproof structure, and constructing an anti-floating anchor rod 113 to be connected with the basement bottom plate 114 so as to realize the pull connection of the anti-floating anchor rod 113 to the basement bottom plate 114;
s4: a fire-fighting water tank and an overflow tank are constructed above the basement floor 114, and the outlet end of the pressure relief water pipe 105 is disposed in the fire-fighting water tank.
In a specific construction site, the construction method of the underground anti-floating structure can be as follows:
1. according to the setting requirement of pre-buried pressure release water pipe, dig the bed course behind the design elevation in the earthwork, pre-buried water pipe periphery is because frequent start and stop of water pipe produces dynamic load that moves the water level throughout the year, therefore carry out enhancement treatment to the structure, the concrete implementation is more dark with earth excavation, dig out the sump pit of suitable size, trade the stone of filling with certain particle diameter ratio in the inside, the particle diameter from edge to centre reduces in proper order, mainly filters the silt in the underground rock soil, parcel wire net and non-woven fabrics on the pre-buried drain pipe prevent fine sand earth from being taken away by rivers in the drain pipe and causing the underground support soil body to sink the cavity. Other filter materials, such as ceramic particles, activated carbon particles, other chemical fiber polymer materials, and the like, can also be used herein.
2. After the construction of the underground water outlet pipe buried underground is finished, a cushion layer and a waterproof layer are constructed, steel bars are bound to serve as water-resistant plates, the underground water outlet pipe can be used as a dewatering pipe before concrete is poured by the water-resistant plates, the water pressure is prevented from rising, the quality of a formed structure of the concrete is prevented from being damaged, a plurality of water stop rings are welded on the underground water outlet pipe buried in the water-resistant plates, and the underground water is prevented from flowing out along the outer wall of a pipeline and gaps of the water-resistant plates to damage the structure.
3. The construction of the rigid anti-floating anchor rod comprises two methods, wherein the first anti-floating anchor rod is finished before the cushion layer construction, and the method can use large-scale mechanical equipment, so that the working surface of a foundation pit is wide, and the working efficiency is high. The positive method comprises the following steps: drilling (steel sleeve follow-up), lowering anchor bar reinforcing steel bar, discharging beige stone, pulling out the steel sleeve, supplementing Mi Dan and grouting. The other way is that the anti-floating anchor rod is used in reverse: the method can be used for constructing an underground building structure, then performing anti-floating anchor rod construction in the underground room, saving the construction period, preventing construction mechanical disturbance from damaging the grouting anchor rod body, and controlling the quality of the anchor rod better. The process comprises the following steps: the method comprises the steps of cushion layer sealing, pre-embedding a water stop sleeve, binding steel bars, pouring a water resistant plate, drilling holes in the sleeve (following of the steel sleeve), lowering anchor rod steel bars, discharging beige stones, pulling the steel sleeve, supplementing Mi Dan, grouting, tensioning prestress tightening, grouting and sealing anchors (anchor clamps).
4. When the construction of the underground water-resistant plate structure is finished, the construction of the fire-fighting water tank and the overflow water tank is started, the drain pipe valve is closed before the construction, and when the construction of all buildings is finished, the underground water drain pipe valve is opened before the water injection of the fire-fighting water tank. The fire-fighting water tank is provided with an overflow water pipe and a municipal water supplementing pipe, the liquid level of the overflow water pipe is higher than that of the municipal water supplementing pipe, the bottom of the fire-fighting water tank is provided with a water inlet pipe of a fire-fighting water pump, and when the fire-fighting system is started, water in the water tank is conveyed to a fire extinguishing part (a fire hydrant and a spraying system) by the water pump. When the water level of the fire-fighting water tank is higher than that of the overflow water pipe, water flows into the overflow water tank, and when the water in the overflow water tank is higher than the set height of the ball float valve, the water is pumped to the ground, and is used for, but not limited to, greening flushing and the like, and redundant water is discharged to the municipal rainwater pipe.
The liquid level in the underground anti-floating structure is calculated according to the design and specification requirements, and the starting pressure of the pressure valve is selected according to the anti-floating force and safety tolerance of the basement bottom plate.
The underground anti-floating structure solves the problem of anti-floating of the basement bottom plate in a rigid-flexible combined mode, and simultaneously realizes fire control and greening water by utilizing underground water resources.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (10)
1. The underground anti-floating structure is characterized by comprising an anti-floating anchor rod (113) connected with a basement bottom plate (114) and a pressure relief structure arranged at the bottom side of the basement bottom plate (114);
when the underground anti-floating water level is higher than the designed underground water level of the building basement, the pressure relief structure is started, and the pressure relief and discharging of the underground water are completed.
2. The underground anti-floating structure of claim 1, wherein the pressure relief structure comprises: a water collecting pit (100) and a pressure relief water pipe (105),
the water collection pit (100) is located at the bottom side of the basement bottom plate (114) and is arranged in a subterranean formation, one end of the pressure relief water pipe (105) extends into the water collection pit (100), and the other end of the pressure relief water pipe penetrates through the basement bottom plate (114) and is communicated with a fire-fighting pool of the basement.
3. The underground anti-floating structure according to claim 2, wherein a reinforcement cage (101) is arranged at the pit edge of the water collecting pit (100), a plurality of stones are filled in the reinforcement cage (101), the particle size of the filled stones is sequentially reduced from the edge of the reinforcement cage (101) to the center direction of the reinforcement cage (101), and the water diversion end part of the pressure relief water pipe (105) is arranged at the center of the reinforcement cage (101).
4. The underground anti-floating structure according to claim 2, wherein a waterproof structure is arranged between the water collection pit (100) and the basement bottom plate (114), the pressure release water pipes (105) penetrate through the waterproof structure, and the waterproof structure is distributed by taking the pressure release water pipes (105) as an axle center.
5. The underground anti-floating structure according to claim 4, wherein the waterproof structure is provided with a floor mat layer (102), a waterproof layer (103) and a pouring structure in this order from the sump (100) to the basement floor (114).
6. The underground anti-floating structure according to claim 4, wherein the pressure relief water pipe (105) is provided with a plurality of annular water stop steel plates (104) on the outer side wall of the inner part of the pouring structure.
7. The underground anti-floating structure according to claim 2, wherein the pressure relief water pipe (105) positioned in the space part of the basement is sequentially provided with a first valve body (106) and a second valve body (107), the first valve body (106) is positioned close to the bottom plate (114) of the basement, and the second valve body (107) is positioned at the water outlet of the pressure relief water pipe (105).
8. The underground anti-floating structure of claim 7, wherein the first valve body (106) is a mechanical valve and the second valve body (107) is a pressure valve.
9. The underground anti-floating structure according to claim 2, wherein the basement space is further provided with an overflow water tank, an overflow water pipe (110) is arranged on the side wall of the top of the fire water tank, and the water outlet end of the overflow water pipe (110) is communicated with the overflow water tank; the overflow water tank is externally connected with a drainage pump (112).
10. The construction method of the underground anti-floating structure is characterized by comprising the following steps of:
s1: the method comprises the steps of constructing a water collecting pit (100), digging a water collecting pit body with proper size in an underground rock soil layer, installing a reinforcement cage (101) in the water collecting pit, filling stones with a certain grain size proportion in the reinforcement cage (101), sequentially reducing grain sizes from edge to middle, and burying a pressure relief water pipe (105), wherein a water diversion port of the pressure relief water pipe (105) is provided with a filtering structure and is arranged at the center position of the reinforcement cage (102);
s2: constructing a waterproof structure on the top side of a water collecting pit (100), sequentially constructing a bottom plate cushion layer (102), a waterproof layer (103) and a pouring body, and arranging a plurality of annular water stopping steel plates (104) on the outer side wall of the pressure release water pipe (105) positioned in the pouring structure;
s3: constructing a basement bottom plate (114), constructing and pouring the basement bottom plate (114) on the top side of the waterproof structure, and constructing an anti-floating anchor rod (113) to be connected with the basement bottom plate (114), so as to realize the pull-connection of the anti-floating anchor rod (113) to the basement bottom plate (114);
s4: a fire-fighting water tank and an overflow tank are constructed above a basement bottom plate (114), and the outlet end of the pressure relief water pipe (105) is arranged in the fire-fighting water tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311362362.0A CN117552475A (en) | 2023-10-19 | 2023-10-19 | Underground anti-floating structure capable of flexibly resisting buoyancy of underground water and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311362362.0A CN117552475A (en) | 2023-10-19 | 2023-10-19 | Underground anti-floating structure capable of flexibly resisting buoyancy of underground water and construction method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117552475A true CN117552475A (en) | 2024-02-13 |
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ID=89809969
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311362362.0A Pending CN117552475A (en) | 2023-10-19 | 2023-10-19 | Underground anti-floating structure capable of flexibly resisting buoyancy of underground water and construction method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117552475A (en) |
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2023
- 2023-10-19 CN CN202311362362.0A patent/CN117552475A/en active Pending
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