Active anti-seepage, anti-leakage and anti-cracking structure of basement bottom plate

Abstract

The utility model discloses an active seepage, leakage and cracking prevention structure of a basement bottom plate, which comprises a foundation pit, pile foundations, a pile foundation platform, a water collecting well, a bearing platform, a raft plate and a waterproof layer structure, a plurality of pile foundations and a plurality of water collecting wells are arranged in the foundation pit, the bearing platform and the raft plate are arranged on the pile foundation platform, and the waterproof layer structure and a filling layer are arranged below the raft plate; the water collecting wells are communicated through embedded pipes, the embedded pipes comprise the first embedded pipe and the second embedded pipe, the first embedded pipe is arranged in the bearing platform, the second embedded pipe is arranged in the filling layer, one end of the second embedded pipe is connected with one end of the first embedded pipe, the other end of the second embedded pipe is communicated with the upper portions of the water collecting wells, and water permeable holes are evenly distributed in a pipe body of the second embedded pipe. And the outer part of the pipe body of the second embedded pipe is wrapped with water-permeable geotechnical cloth. The underground water level can be controlled below the waterproof layer structure, the basement bottom plate structure and the waterproof layer structure are prevented from being damaged by underground water buoyancy, and the effects of active seepage prevention, water prevention and cracking prevention are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction, in particular to an active anti-seepage, anti-leakage and anti-cracking structure for a basement floor. Background Art

[0002] The basement floor is located in the foundation pit and is generally composed of raft slabs, pedestals, pile foundations, etc. In areas with relatively high groundwater levels or areas with sudden heavy rains in extreme weather, once the basement floor is soaked in water levels exceeding the design level for a long time, it is easy to cause irreversible damage such as deformation, cracking, and water seepage. In serious cases, there will be structural safety problems, affecting the overall service life of the building.

[0003] At present, the way to prevent seepage, leakage and cracking of basement floors is to install anti-floating piles, increase the reinforcement ratio of the floor slab, thicken the floor slab concrete thickness, increase the number of waterproof membrane layers, etc. However, the above methods have high construction costs. In the southern spring rainy season and areas with high groundwater levels, local leakage and damp walls and floors will still occur. Summary of the invention

[0004] In view of the deficiencies in the prior art, the utility model provides an active anti-seepage, anti-leakage and anti-cracking structure for a basement floor.

[0005] The technical solution of the utility model to solve the above problems is:

[0006] The active anti-seepage, anti-leakage and anti-cracking structure of the basement floor comprises a foundation pit, a pile foundation, a pile foundation platform, a water collection well, a cap, a raft and a waterproof layer structure, wherein a plurality of pile foundations and a plurality of water collection wells are arranged in the foundation pit, a cap and a raft are arranged on the pile foundation platform, and a waterproof layer structure and a filling layer are arranged below the raft; the water collection wells are connected by embedded pipes, and the embedded pipes comprise a first embedded pipe and a second embedded pipe, the first embedded pipe is arranged in the cap, and the second embedded pipe is arranged in the filling layer, one end of the second embedded pipe is connected to one end of the first embedded pipe, and the other end is connected to the upper part of the water collection well, the pipe body of the second embedded pipe is evenly distributed with water permeable holes, and the outside of the pipe body of the second embedded pipe is wrapped with a permeable geotextile.

[0007] Furthermore, the first pre-buried pipe is a galvanized steel pipe, and the second pre-buried pipe is a PVC pipe.

[0008] Furthermore, the first embedded pipe is welded to the steel bars of the foundation.

[0009] Furthermore, the diameter of the second embedded pipe is 110 mm, and the diameter of the water-permeable hole is 0.5 to 1.5 mm.

[0010] Furthermore, the first pre-buried pipe and the second pre-buried pipe are arranged in parallel, and the first pre-buried pipe and the second pre-buried pipe are connected through a casing; and a flange connected to the second pre-buried pipe is provided at the upper part of the water collection well.

[0011] Furthermore, the first embedded pipe can be configured as a straight pipe, a T-shaped pipe or a cross-shaped pipe according to connection requirements.

[0012] Furthermore, the waterproof layer structure includes a waterproof membrane layer, a waterproof coating layer, an additional layer for external corners and an additional layer for internal corners. The waterproof membrane layer is laid on the bottom of the raft, the outer side of the pedestal and the pile foundation respectively, and the waterproof coating layer is provided around the pile head and on the top of the pile head respectively. The additional layer for external corners is provided at the external corners of the raft and the pedestal, and the additional layer for internal corners is provided at the internal corners of the pedestal and the pile foundation. Beneficial Effects

[0013] The utility model avoids material waste and reduces construction costs while ensuring the quality of the basement floor structure and waterproof construction. The utility model can control the groundwater level below the waterproof layer structure, avoiding the buoyancy of groundwater to damage the basement floor structure and the waterproof layer structure, and achieves the effect of active anti-seepage, waterproofing and anti-cracking. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A distribution diagram of the raft, water collection well and pre-buried pipes provided in the embodiment of the utility model in the foundation pit;

[0015] Figure 2 A schematic diagram of the structure of the active anti-seepage, anti-leakage and anti-cracking structure of the basement floor provided by the embodiment of the utility model;

[0016] Figure 3 A schematic diagram of a waterproof layer structure provided by an embodiment of the utility model;

[0017] In the figure: pile foundation 1, water collection well 2, cap 3, raft 4, waterproof layer structure 5, first embedded pipe 6, second embedded pipe 7, permeable geotextile 8, filling layer 9, waterproof roll material layer 51, waterproof coating layer 52, external corner additional layer 53, internal corner additional layer 54, foundation pit 100, pile foundation 101. DETAILED DESCRIPTION

[0018] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below with reference to specific illustrations.

[0019] Example 1: See Figures 1 to 3As shown, the active anti-seepage, anti-leakage and anti-cracking structure of the basement floor comprises a foundation pit 100, a pile foundation 1, a pile foundation platform 101, a water collection well 2, a cap 3, a raft 4 and a waterproof layer structure 5. A plurality of pile foundations 1 and a plurality of water collection wells 2 are arranged in the foundation pit 100. A cap 3 and a raft 4 are arranged on the pile foundation platform 101. A waterproof layer structure 5 and a filling layer 9 are arranged below the raft 4. The water collection wells 2 are connected by embedded pipes. The embedded pipes comprise a first embedded pipe 6 and a second embedded pipe 7. The first embedded pipe 6 is arranged in the cap 3, the second embedded pipe 7 is arranged in the filling layer 9, one end of the second embedded pipe 7 is connected to one end of the first embedded pipe 6, and the other end is connected to the upper part of the water collection well 2. The second pre-buried pipe 7 is connected, and water-permeable holes are evenly distributed on the pipe body of the second pre-buried pipe 7. The outside of the pipe body of the second pre-buried pipe 7 is wrapped with a permeable geotextile 8. When the groundwater level rises, water will enter the second pre-buried pipe 7 through the permeable geotextile 8 and the water-permeable holes, and actively collect the water into the collection well 2 through the pre-buried pipe, so as to control the groundwater level below the waterproof layer structure 5, thereby avoiding the buoyancy of groundwater from destroying the raft 4 and the waterproof layer structure 5, and achieving the effect of active anti-seepage, waterproofing and anti-cracking. When the water level in the collection well 2 reaches a certain height, it can be centrally supplied to the sedimentation tank through a sewage pump, and then supplied to the fire water tank, community maintenance, dust removal, road cleaning and other aspects.

[0020] Furthermore, in order to realize automatic dewatering of the water collection well 2, a water level sensor can be set in the water collection well 2 to detect the water level information and send it to the controller. The controller determines whether pumping is needed based on the water level. When the set water level upper limit is reached, the controller controls the sewage pump to start and pump out the water in the water collection well 2, thereby realizing automatic dewatering of the water collection well 2.

[0021] Furthermore, there can be multiple sewage pumps, and each of the multiple sewage pumps can correspond to a water collection well, which can increase the precipitation speed and avoid the failure of a single sewage pump affecting precipitation.

[0022] In this embodiment, the first pre-buried pipe 6 is a galvanized steel pipe, and the second pre-buried pipe 7 is a PVC pipe.

[0023] In this embodiment, the first embedded pipe 6 is welded to the steel bars of the cap 3, which ensures the stability of the first embedded pipe 6 and makes the first embedded pipe 6 evenly stressed as a whole.

[0024] In this embodiment, the diameter of the second embedded pipe 7 is 110 mm, and the diameter of the water-permeable hole is 0.5-1.5 mm.

[0025] In this embodiment, the first embedded pipe 6 and the second embedded pipe 7 are arranged in parallel, and the first embedded pipe 6 and the second embedded pipe 7 are connected by a casing; a flange connected to the second embedded pipe 7 is provided at the upper part of the water collection well 2, and the installation of the second embedded pipe 7 can be facilitated by setting the flange.

[0026] In this embodiment, the first embedded pipe 6 can be configured as a straight pipe, a T-shaped pipe, or a cross-shaped pipe according to connection requirements.

[0027] In this embodiment, the waterproof layer structure 5 includes a waterproof roll material layer 51, a waterproof coating layer 52, an additional layer 53 at a positive corner and an additional layer 54 at a negative corner. The waterproof roll material layer 51 is respectively laid on the bottom of the raft 4, the outer side of the pedestal 3 and the pile foundation 101, and the waterproof coating layer 52 is respectively provided around the pile head and on the top of the pile head. The additional layer 53 at the positive corner between the raft 4 and the pedestal 3 is provided at the negative corner between the pedestal 3 and the pile foundation 101.

[0028] The construction method of the utility model is as follows:

[0029] Step 1: excavating a foundation pit 100;

[0030] Step 2: Driving pile foundation 1 and digging water collection well 2 in foundation pit 100;

[0031] Step 3: After the pile foundation 1 is completed, the site is leveled, and the position of the cap and the second embedded pipe 7 is measured and placed according to the dimensions of the design drawing;

[0032] Step 4: excavate the cap and break the pile head on the pile foundation 101 to the designed height;

[0033] Step 5: Set up a casting template, lay a waterproof roll material layer 51 in the casting template, apply a waterproof coating layer 52 around the pile head and on the top of the pile head, set a positive corner additional layer 53 at the positive corner between the raft 4 and the cap 3, and set a negative corner additional layer 54 at the negative corner between the cap 3 and the pile foundation 101;

[0034] Step 6: Build a brick mold around the pile foundation 101 and paint it. The brick mold is built to the position of the first embedded pipe 6, and the surrounding area of ​​the brick mold is backfilled and compacted;

[0035] Step 7: Lay the cap steel bars and weld and fix the first embedded pipe 6 to the cap steel bars;

[0036] Step 8: pouring the cap 3 and the raft 4;

[0037] Step 9, excavate the position of the second embedded pipe 7, backfill and compact the over-excavated part during the excavation process, and the compaction degree is 0.94; the first embedded pipe 6 and the second embedded pipe 7 have the same elevation, both are located 50-80cm below the raft 4, and the second embedded pipe 7 is installed;

[0038] Step 10: backfill the filling layer 9. Specifically, the filling layer 9 is backfilled with graded sand and gravel, and the graded sand and gravel are prepared in a ratio of 1:2 between sand and gravel.

[0039] Further, in step five, the additional layer 53 at the external corner and the additional layer 54 at the internal corner are located on the inner side of the waterproof membrane layer 51, the waterproof membrane layer 51 is overlapped on the waterproof coating layer 52, the thickness of the waterproof membrane layer 51 is not less than 1.5 mm, and the waterproof membrane layer 51 is constructed at least twice; the thickness of the waterproof coating layer 52 is not less than 1.5 mm.

[0040] Further, in step nine; the over-excavated part is backfilled and compacted to open a trench, the bottom of the trench is backfilled with 20 cm 1:2 graded sand and gravel, the trench excavation width is 30 cm, a permeable geotextile 8 is laid in the trench, the second embedded pipe 7 is placed in the center, the two ends of the second embedded pipe 7 are respectively connected to the collection well 2 and the first embedded pipe 6, the permeable geotextile is wrapped around the second embedded pipe 7, and the graded sand and gravel are backfilled around to ensure uniformity.

[0041] The above shows and describes the basic principles and main features of the utility model and the advantages of the utility model. For those skilled in the art, it is obvious that the utility model is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic features of the utility model. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the utility model is defined by the attached claims rather than the above description, and it is intended to include all changes within the meaning and scope of the equivalent elements of the claims. Any figure mark in the claims should not be regarded as limiting the claims involved.

[0042] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. The basement floor active anti-seepage, anti-leakage and anti-cracking structure is characterized by: The invention comprises a foundation pit (100), a pile foundation (1), a pile foundation platform (101), a water collection well (2), a cap (3), a raft (4) and a waterproof layer structure (5); a plurality of pile foundations (1) and a plurality of water collection wells (2) are arranged in the foundation pit (100); a cap (3) and a raft (4) are arranged on the pile foundation platform (101); a waterproof layer structure (5) and a filling layer (9) are arranged below the raft (4); the water collection wells (2) are connected to each other through pre-buried pipes; The embedded pipe comprises a first embedded pipe (6) and a second embedded pipe (7), wherein the first embedded pipe (6) is arranged in a support platform (3), and the second embedded pipe (7) is arranged in a filling layer (9), one end of the second embedded pipe (7) is connected to one end of the first embedded pipe (6), and the other end is connected to the upper part of the water collection well (2), and the pipe body of the second embedded pipe (7) is evenly distributed with water-permeable holes, and the outside of the pipe body of the second embedded pipe (7) is wrapped with a permeable geotextile (8).

2. The active anti-seepage, anti-leakage and anti-cracking structure for the basement floor according to claim 1 is characterized in that: The first pre-buried pipe (6) is a galvanized steel pipe, and the second pre-buried pipe (7) is a PVC pipe.

3. The active anti-seepage, anti-leakage and anti-cracking structure for basement floor according to claim 1 is characterized in that: The first embedded pipe (6) is welded to the steel bars of the cap (3).

4. The active anti-seepage, anti-leakage and anti-cracking structure for basement floor according to claim 1 is characterized in that: The diameter of the second embedded pipe (7) is 110 mm, and the diameter of the water-permeable hole is 0.5-1.5 mm.

5. The active anti-seepage, anti-leakage and anti-cracking structure for basement floor according to claim 1 is characterized in that: The first pre-buried pipe (6) and the second pre-buried pipe (7) are arranged in parallel, and the first pre-buried pipe (6) and the second pre-buried pipe (7) are connected via a casing; and a flange connected to the second pre-buried pipe (7) is provided at the upper part of the water collection well (2).

6. The active anti-seepage, anti-leakage and anti-cracking structure for basement floor according to claim 1 is characterized in that: The first embedded pipe (6) can be configured as a straight pipe, a T-shaped pipe or a cross-shaped pipe according to connection requirements.

7. The active anti-seepage, anti-leakage and anti-cracking structure for basement floor according to claim 1 is characterized in that: The waterproof layer structure (5) comprises a waterproof coiled material layer (51), a waterproof coating layer (52), a positive corner additional layer (53) and a negative corner additional layer (54); the waterproof coiled material layer (51) is laid on the bottom of the raft (4), the outer side of the cap (3) and the pile foundation (101), respectively; the waterproof coating layer (52) is provided around the pile head and on the top of the pile head, respectively; the positive corner additional layer (53) is provided at the positive corner between the raft (4) and the cap (3), and the negative corner additional layer (54) is provided at the negative corner between the cap (3) and the pile foundation (101).

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