A waterproof basement foundation structure

Abstract

The present application discloses a waterproof basement pedestal structure, which relates to the technical field of pedestal, including a foundation with a foundation pit excavated, engineering piles embedded in the bottom of the inner cavity of the foundation, and a concrete cushion layer cast above the engineering piles. The present application is provided by the coordination of structures such as a water-blocking frame, a receiving cavity, a waterproof geotextile and a pedestal body. The water-blocking frame is sleeved at the connection between the pedestal body and the concrete cushion layer, and one end of the waterproof geotextile is embedded in the receiving cavity opened on the side of the water-blocking frame. Since the waterproof geotextile is corrugated, when the pedestal body is over-pressurized and settles, the waterproof geotextile located in the receiving cavity can be unfolded in the receiving cavity to adapt to the settlement of the pedestal body, and prevent the waterproof geotextile from breaking due to pulling, thereby greatly improving the waterproof performance of the pedestal structure, and avoiding as much as possible the problem that when the traditional basement pedestal settles, the waterproof coating is easily torn due to the displacement of the pedestal, resulting in reduced waterproof performance at the connection between the pedestal and the foundation.

Description

Technical Field

[0001] The present application relates to the technical field of pedestals, and in particular to a waterproof basement pedestal structure. Background Art

[0002] With the acceleration of urbanization, underground space is being used more and more frequently. As an important building component, the waterproof performance of the basement directly affects the use function and safety performance of the building.

[0003] Traditional basement pedestal structures are usually made of poured concrete and coated with a waterproof coating on the outside to enhance its waterproof performance. When the pedestal settles due to pressure, the waterproof coating is easily torn due to the displacement of the pedestal, resulting in reduced waterproof performance at the connection between the pedestal and the foundation. Utility Model Content

[0004] The utility model aims to solve or at least alleviate the problem that when a traditional basement pedestal settles, the waterproof coating is easily torn due to the displacement of the pedestal, resulting in reduced waterproof performance at the connection between the pedestal and the foundation.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A waterproof basement pedestal structure comprises a foundation with a foundation pit excavated, engineering piles are pre-buried at the bottom of the inner cavity of the foundation, a concrete cushion layer is cast above the engineering piles, the bottom end of a prefabricated pedestal body is buried above the concrete cushion layer, a waterproof component is arranged between the bottom of the pedestal body and the concrete cushion layer, the waterproof component comprises a water-blocking frame sleeved on the bottom end of the pedestal body, a receiving cavity of an annular structure is arranged on the side wall around the water-blocking frame, a waterproof geotextile with a corrugated structure is embedded in the receiving cavity, one end of the waterproof geotextile is fixedly connected to the inner wall of the receiving cavity, and the other end of the waterproof geotextile extends to the outside of the opening end of the receiving cavity and is clamped to the concrete cushion layer through a clamping piece.

[0007] By adopting the above technical solution, when using, the user first lays a concrete cushion layer at the bottom of the foundation pit, then places the water-blocking frame on top of the concrete cushion layer, and pulls out the waterproof geotextile from the accommodating cavity of the water-blocking frame, uses a rubber clamp to clamp the outer end of the waterproof geotextile into the preset groove on the upper surface of the concrete cushion layer, and embeds the bottom end of the prefabricated pedestal body into the inner cavity of the water-blocking frame, and finally casts a concrete filling layer around the pedestal body to fix the pedestal body. Since the waterproof geotextile arranged in the accommodating cavity is corrugated, when the pedestal body is over-pressurized and sinks, the waterproof geotextile located in the accommodating cavity can be unfolded in the accommodating cavity to adapt to the settlement of the pedestal body, and try to avoid the problem of the waterproof geotextile being pulled and broken when the pedestal body sinks, thereby affecting its waterproof performance.

[0008] Optionally, the inner cavity cross-section of the foundation pit is larger than the cross-section of the foundation base body.

[0009] By adopting the above technical solution, a gap is left between the surrounding side of the pedestal body and the inner wall of the foundation pit, which is convenient for users to lay waterproof geotextiles. At the same time, the gap can be backfilled after construction to fix the pedestal body.

[0010] Optionally, a gap is left between the inner wall of the accommodating cavity and both sides of the waterproof geotextile.

[0011] By adopting the above technical scheme, the waterproof geotextile can be accommodated in the accommodating cavity in a bent state. When the waterproof geotextile is subjected to pulling, the waterproof geotextile can be unfolded in the accommodating cavity to adapt to the settlement of the base body and avoid the problem of the waterproof geotextile being pulled and broken when the base body settles, thereby affecting its waterproof performance.

[0012] Optionally, the connector includes a rubber block fixedly connected to one end of the waterproof geotextile outside the accommodating cavity, and also includes a slot reserved on the upper surface of the concrete cushion layer around the water-blocking frame.

[0013] By adopting the above technical solution, a rubber clamping block and a clamping groove are provided to fix one end of the waterproof geotextile located outside the accommodating cavity.

[0014] Optionally, the inner cavity of the card slot is in a prism-shaped structure, an expansion block is fixedly connected to the bottom wall of the inner cavity of the card slot, and an expansion groove used in conjunction with the expansion block is provided at the bottom of the rubber card block.

[0015] By adopting the above technical solution, since the cross-section of the inner cavity of the card slot is a prism-shaped structure, when the rubber card block is inserted into the card slot, the expansion block can be reversely inserted into the inner cavity of the expansion slot to squeeze the rubber card block to both sides to expand, so that the rubber card block fits tightly with the inner wall of the card slot, thereby fixing the rubber card block and avoiding the problem of the rubber card block slipping out of the inner cavity of the card slot after being subjected to force.

[0016] Optionally, a plurality of tie bars are embedded in the interior of the foundation body, and a plurality of stirrups distributed at equal distances are sleeved on the plurality of tie bars, and the tie bars and stirrups together form a steel cage.

[0017] By adopting the above technical solution, multiple tie bars and multiple stirrups are provided to form a steel cage skeleton, thereby improving the supporting performance of the pedestal body.

[0018] Optionally, the interior of the foundation pit around the base body is filled with a concrete filling layer.

[0019] By adopting the above technical solution, a concrete filling layer is provided to fill the gap between the peripheral side of the pedestal body and the inner wall of the foundation pit. After the plate with the concrete filling layer is fixed, the fixing work of the pedestal body can be realized.

[0020] Optionally, water-swellable waterstop strips with tops flush with the foundation are laid on the inner wall of the pit and the surrounding sides of the base body.

[0021] By adopting the above technical solution, water-swelling waterstop strips are set to seal the gap between the post-cast concrete filling layer and the inner wall of the foundation pit and between the concrete filling layer and the prefabricated pedestal body, thereby further improving the waterproof performance of the pedestal structure.

[0022] In summary, the beneficial effects of this application are as follows:

[0023] The present application achieves a coordinated arrangement among structures such as a water-blocking frame, a receiving cavity, a waterproof geotextile and a pedestal body. The water-blocking frame is sleeved at the connection between the pedestal body and the concrete cushion layer, and one end of the waterproof geotextile is embedded in the receiving cavity opened on the side of the water-blocking frame. Since the waterproof geotextile is corrugated, when the pedestal body is subjected to excessive pressure and sinks, the waterproof geotextile located in the receiving cavity can be unfolded in the receiving cavity to adapt to the settlement of the pedestal body and prevent the waterproof geotextile from breaking due to pulling, thereby greatly improving the waterproof performance of the pedestal structure and avoiding as much as possible the problem that when the traditional basement pedestal sinks, the waterproof coating is easily torn due to the displacement of the pedestal, resulting in reduced waterproof performance at the connection between the pedestal and the foundation. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall cross-sectional structure of this application;

[0025] Figure 2 It is a schematic diagram of the connection structure of the water blocking frame and the waterproof geotextile of the present application;

[0026] Figure 3 This application Figure 1 A magnified view of the local detail in the middle.

[0027] Explanation of the accompanying reference numerals: 1. foundation; 2. engineering piles; 3. concrete cushion layer; 4. water-blocking frame; 5. accommodating cavity; 6. waterproof geotextile; 7. rubber block; 8. expansion groove; 9. slot; 10. expansion block; 11. pedestal body; 12. tensioning reinforcement; 13. stirrups; 14. water-swelling waterstop strip; 15. concrete filling layer. DETAILED DESCRIPTION

[0028] The following is combined with Figure 1-3 This application is described in further detail.

[0029] See also Figure 1-3 A waterproof basement pedestal structure includes a foundation 1 with a foundation pit excavated, and engineering piles 2 are pre-buried at the bottom of the inner cavity of the foundation 1. The engineering piles 2 pre-buried in the ground are used for support to prevent the pedestal structure from settling after being compressed.

[0030] A concrete cushion layer 3 is cast above the engineering pile 2 , the bottom end of the prefabricated pedestal body 11 is buried above the concrete cushion layer 3 , and a waterproof component is provided between the bottom of the pedestal body 11 and the concrete cushion layer 3 .

[0031] The waterproof assembly includes a water blocking frame 4 sleeved on the bottom end of the pedestal body 11, and a ring-shaped accommodating cavity 5 is provided on the side wall of the water blocking frame 4. A waterproof geotextile 6 with a corrugated structure is embedded in the accommodating cavity 5. One end of the waterproof geotextile 6 is fixedly connected to the inner wall of the accommodating cavity 5, and the other end of the waterproof geotextile 6 extends to the outside of the opening end of the accommodating cavity 5 and is clamped with the concrete cushion layer 3 through a clamping member. The waterproof geotextile 6 is laid between the concrete cushion layer 3 and the bottom end of the pedestal body 11 for waterproofing.

[0032] Reference Figure 1 The inner cavity section of the foundation pit is larger than the section of the foundation body 11. A gap is left between the side of the foundation body 11 and the inner wall of the foundation pit, which is convenient for users to lay the waterproof geotextile 6. At the same time, the gap can be backfilled after construction to fix the foundation body 11.

[0033] Reference Figure 1 A gap is left between the inner wall of the accommodating cavity 5 and the two sides of the waterproof geotextile 6. The waterproof geotextile 6 can be accommodated in the accommodating cavity 5 in a bent state. When the waterproof geotextile 6 is pulled, the waterproof geotextile 6 can be unfolded in the accommodating cavity 5 to adapt to the settlement of the foundation body 11, and the problem of the waterproof geotextile 6 being pulled and broken when the foundation body 11 settles, which affects its waterproof performance, is avoided as much as possible.

[0034] Reference Figure 2 The clamping member includes a rubber clamping block 7 fixedly connected to one end of the waterproof geotextile 6 outside the accommodating cavity 5, and also includes a clamping groove 9 reserved on the upper surface of the concrete cushion layer 3 on the side of the water blocking frame 4. The rubber clamping block 7 and the clamping groove 9 are provided to fix the end of the waterproof geotextile 6 outside the accommodating cavity 5.

[0035] Reference Figure 2 and Figure 3 The inner cavity of the card slot 9 is a prism-shaped structure, and an expansion block 10 is fixedly connected to the bottom wall of the inner cavity of the card slot 9. An expansion slot 8 for cooperating with the expansion block 10 is provided at the bottom of the rubber card block 7. Since the cross-section of the inner cavity of the card slot 9 is a prism-shaped structure, when the rubber card block 7 is inserted into the card slot 9, the expansion block 10 can be reversely inserted into the inner cavity of the expansion slot 8 to squeeze the rubber card block 7 to expand on both sides, so that the rubber card block 7 fits tightly with the inner wall of the card slot 9, thereby fixing the rubber card block 7 and avoiding the problem of the rubber card block 7 slipping out of the inner cavity of the card slot 9 after being stressed.

[0036] Reference Figure 1A plurality of tie bars 12 are embedded in the pedestal body 11, and a plurality of equidistantly distributed stirrups 13 are sleeved on the plurality of tie bars 12, and the tie bars 12 and stirrups 13 together form a steel cage. The plurality of tie bars 12 and stirrups 13 are arranged to form a steel cage skeleton to improve the supporting performance of the pedestal body 11.

[0037] Reference Figure 1 The inside of the foundation pit around the pedestal body 11 is filled with a concrete filling layer 15. The concrete filling layer 15 is used to fill the gap between the pedestal body 11 and the inner wall of the foundation pit. After the plate with the concrete filling layer 15 is fixed, the fixing work of the pedestal body 11 can be realized.

[0038] Reference Figure 1 The inner wall of the foundation pit and the surrounding side of the pedestal body 11 are all paved with water-swelling waterstop strips 14 whose tops are flush with the foundation 1. The water-swelling waterstop strips 14 are provided to seal the gaps between the post-cast concrete filling layer 15 and the inner wall of the foundation pit and between the concrete filling layer 15 and the prefabricated pedestal body 11, further improving the waterproof performance of the pedestal structure.

[0039] The implementation principle of the present application is as follows: when in use, the user first lays a concrete cushion layer 3 at the bottom of the foundation pit of the foundation 1, then places the water-blocking frame 4 on top of the concrete cushion layer 3, and pulls out the waterproof geotextile 6 from the accommodating cavity 5 of the water-blocking frame 4, and uses the rubber clamp 7 to clamp the outer end of the waterproof geotextile 6 into the preset clamping groove 9 on the upper surface of the concrete cushion layer 3, and embeds the bottom end of the prefabricated pedestal body 11 into the inner cavity of the water-blocking frame 4, and finally casts a concrete filling layer 15 around the pedestal body 11 to fix the pedestal body 11. Since the waterproof geotextile 6 arranged in the accommodating cavity 5 is corrugated, when the pedestal body 11 is subjected to excessive pressure and sinks, the waterproof geotextile 6 located in the accommodating cavity 5 can be unfolded in the accommodating cavity 5 to adapt to the settlement of the pedestal body 11, and try to avoid the problem that the waterproof geotextile 6 is pulled and broken when the pedestal body 11 sinks, thereby affecting its waterproof performance.

[0040] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A waterproof basement cap structure, comprising a foundation (1) with a foundation pit excavated, engineering piles (2) pre-buried at the bottom of the inner cavity of the foundation (1), a concrete cushion layer (3) cast above the engineering piles (2), a prefabricated cap body (11) having a bottom end buried above the concrete cushion layer (3), a waterproof component provided between the bottom of the cap body (11) and the concrete cushion layer (3), characterized in that: The waterproof assembly comprises a water-blocking frame (4) sleeved on the bottom end of the support body (11); a circumferential side wall of the water-blocking frame (4) is provided with a receiving cavity (5) of an annular structure; a waterproof geotextile (6) of a corrugated structure is embedded in the receiving cavity (5); one end of the waterproof geotextile (6) is fixedly connected to the inner wall of the receiving cavity (5); the other end of the waterproof geotextile (6) extends outside the opening end of the receiving cavity (5) and is clamped to the concrete cushion layer (3) through a clamping piece.

2. A waterproof basement cap structure according to claim 1, characterized in that: The inner cavity cross-section of the foundation pit is larger than the cross-section of the foundation base body (11).

3. The waterproof basement cap structure according to claim 1 is characterized by: A gap is left between the inner wall of the accommodating cavity (5) and the two sides of the waterproof geotextile (6).

4. The waterproof basement cap structure according to claim 1, characterized in that: The clamping member comprises a rubber clamping block (7) fixedly connected to one end of the waterproof geotextile (6) located outside the accommodating cavity (5), and also comprises a clamping groove (9) reserved on the upper surface of the concrete cushion layer (3) on the peripheral side of the water blocking frame (4).

5. The waterproof basement cap structure according to claim 4 is characterized by: The inner cavity of the card slot (9) is in a prism-shaped structure, an expansion block (10) is fixedly connected to the bottom wall of the inner cavity of the card slot (9), and an expansion groove (8) used in conjunction with the expansion block (10) is provided at the bottom of the rubber card block (7).

6. The waterproof basement cap structure according to claim 1, characterized in that: A plurality of tie bars (12) are embedded in the base body (11), a plurality of stirrups (13) are sleeved on the plurality of tie bars (12) and are distributed at equal intervals, and the tie bars (12) and the stirrups (13) together form a steel cage.

7. The waterproof basement cap structure according to claim 1, characterized in that: The interior of the foundation pit around the base body (11) is filled with a concrete filling layer (15).

8. The waterproof basement cap structure according to claim 1, characterized in that: The inner wall of the foundation pit and the peripheral side of the foundation base body (11) are both provided with water-expandable waterstop strips (14) whose tops are flush with the foundation (1).

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