Deep foundation pit bottom plate construction closed conduit drainage device

Abstract

The utility model discloses a deep foundation pit bottom plate construction closed conduit drainage device which comprises a drainage closed conduit, one end of the drainage closed conduit is located in a leakage area of enclosure row piles of a deep foundation pit, and the other end of the drainage closed conduit extends into a drainage structure of the deep foundation pit. The drainage closed conduit is of a hollow box-shaped structure, and a plurality of drainage holes are formed in the periphery of the drainage closed conduit at intervals, so that leakage water enters a hollow cavity of the drainage closed conduit through the drainage holes and is drained into a drainage structure of the deep foundation pit. The utility model relates to the technical field of deep foundation pit construction, and can solve the problems that in the prior art, the effect of blocking leakage points of deep foundation pit support row piles through quick-setting cement is poor, and manpower and material resources are consumed.

Description

Technical Field

[0001] The utility model relates to the technical field of deep foundation pit construction, in particular to a hidden channel hydrophobic device for deep foundation pit bottom slab construction. Background Technique

[0002] With the increase of the design height of building structures, the depth of underground structures is also getting larger and larger. Under the action of relatively large groundwater pressure, clear water leakage often occurs at the bottom and side of the retaining row piles during the construction of deep foundation pits. At present, when constructing deep foundation pits, the leakage parts of the retaining row piles are usually sealed with quick-drying cement. Although it has a certain sealing and anti-seepage effect, for the situation of relatively large seepage volume, it cannot effectively seal the leakage parts, and it requires a certain amount of manpower and material resources, which is likely to affect the construction progress and construction period. Therefore, it is necessary to provide a hidden channel hydrophobic device for deep foundation pit bottom slab construction, which can solve the problems that the quick-drying cement has poor effect in sealing the leakage points of the retaining row piles in deep foundation pits and consumes manpower and material resources in the prior art. Summary of the Invention

[0003] The purpose of the utility model is to provide a hidden channel hydrophobic device for deep foundation pit bottom slab construction, which can solve the problems that the quick-drying cement has poor effect in sealing the leakage points of the retaining row piles in deep foundation pits and consumes manpower and material resources in the prior art.

[0004] The utility model is realized as follows:

[0005] A hidden channel hydrophobic device for deep foundation pit bottom slab construction includes a drainage hidden channel. One end of the drainage hidden channel is located in the leakage area of the retaining row piles of the deep foundation pit, and the other end of the drainage hidden channel extends to the drainage structure of the deep foundation pit; the drainage hidden channel is a hollow box-shaped structure, and a number of hydrophobic holes are formed at intervals around the drainage hidden channel, so that the seepage water enters the hollow cavity of the drainage hidden channel through the hydrophobic holes and is discharged to the drainage structure of the deep foundation pit.

[0006] The box body of the drainage hidden channel is a hollow double-layer structure, and the hollow double-layer structure is filled with water-absorbing materials.

[0007] The drainage hidden channel is buried under the bottom slab of the deep foundation pit, and the cushion layer and bottom slab of the deep foundation pit cover the drainage hidden channel, so that the drainage hidden channel forms an integral body with the cushion layer and bottom slab of the deep foundation pit.

[0008] Compared with the prior art, the utility model has the following beneficial effects:

[0009] 1. Since the utility model is provided with a drainage culvert, the drainage culvert is arranged between the leakage area of the retaining row piles and the drainage structure of the deep foundation pit, and hydrophobic holes are arranged around the drainage culvert and absorbent materials are filled inside, so that the seepage water at the retaining row piles directly enters the hollow chamber of the drainage culvert and the absorbent materials through the hydrophobic holes, and then is discharged into the drainage structure of the deep foundation pit by the drainage culvert, ensuring the rapid drainage of the seepage water at the retaining row piles, without the need to use quick-drying cement for plugging, and being able to ensure timely and effective leakage drainage when the leakage water volume is large, achieving the plugging effect, which is better than the plugging method of quick-drying cement, and is more efficient and economical, greatly reducing the consumption of manpower and material resources, and being beneficial to ensuring the construction progress.

[0010] 2. Since the utility model is buried under the bottom slab, and after the cushion layer and the bottom slab are poured and constructed, the concrete drainage culvert is combined with the concrete of the cushion layer and the bottom slab to form a permanent integral structure, which can continuously solve the problems of leakage at the bottom and side of the retaining row piles, and is beneficial to the safety of the later construction of the deep foundation pit and the control of the construction progress. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is the elevation view of the drainage and hydrophobic device of the deep foundation pit bottom slab construction culvert of the utility model;

[0012] Figure 2 is the plan view of the drainage and hydrophobic device of the deep foundation pit bottom slab construction culvert of the utility model.

[0013] In the figure, 1 is the drainage culvert, 2 is the hydrophobic hole, 3 is the absorbent material, 4 is the bottom slab, and 5 is the retaining row pile. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0014] The following further describes the utility model in conjunction with the drawings and specific embodiments.

[0015] Please refer to the attached Figure 1 and the attached Figure 2 , a drainage and hydrophobic device for the deep foundation pit bottom slab construction culvert, including a drainage culvert 1, one end of the drainage culvert 1 is located in the leakage area of the retaining row piles 5 of the deep foundation pit, and the other end of the drainage culvert 1 extends into the drainage structure (not shown in the figure) of the deep foundation pit; the drainage culvert 1 is a hollow box-shaped structure, and a number of hydrophobic holes 2 are formed at intervals around the drainage culvert 1, so that the seepage water enters the hollow chamber of the drainage culvert 1 through the hydrophobic holes 2 and is discharged into the drainage structure of the deep foundation pit.

[0016] By providing the drainage blind ditch 1, the seepage water in the leakage areas such as the bottom or side of the retaining row piles 5 can be introduced into the hollow chamber of the drainage blind ditch 1 through the hydrophobic holes 2, and then be centrally discharged from the drainage blind ditch 1 to drainage structures such as the sump of the deep foundation pit, so as to ensure the timely drainage of the seepage water. There is no need to seal the leakage points with quick-drying cement. Even if the leakage water volume is large, the effective drainage of the seepage water can be ensured, thus avoiding the impact of the seepage water on the construction progress of the deep foundation pit.

[0017] The drainage blind ditch 1 can adopt a finished concrete blind ditch, and its shape and size can be adaptively prefabricated according to the actual construction requirements to ensure the layout of the drainage blind ditch 1 between the leakage area of the retaining row piles 5 and the drainage structure of the deep foundation pit.

[0018] Please refer to the attached Figure 1 and the attached Figure 2 , the box body of the drainage blind ditch 1 is a hollow double-layer structure, and the hollow double-layer structure is filled with the water-absorbing material 3.

[0019] Preferably, the water-absorbing material 3 can adopt a water-absorbing sponge. Since the hydrophobic holes 2 penetrate the side wall of the drainage blind ditch 1, when the seepage water enters the drainage blind ditch 1 through the hydrophobic holes 2, a part of the seepage water is absorbed by the water-absorbing material 3, which can accelerate the rapid absorption of the seepage water and minimize the impact of the seepage water on the construction of the deep foundation pit to the greatest extent.

[0020] Please refer to the attached Figure 1 and the attached Figure 2 , the drainage blind ditch 1 is buried under the bottom slab 4 of the deep foundation pit, and the cushion layer and the bottom slab 4 of the deep foundation pit cover the drainage blind ditch 1, so that the drainage blind ditch 1 and the cushion layer and the bottom slab 4 of the deep foundation pit form an integral whole.

[0021] During the pouring of the cushion layer and the bottom slab 4, the drainage blind ditch 1 is permanently poured into the cushion layer and the bottom slab 4 to form a permanent integral structure, so as to be able to converge and drain the water leaking from the bottom and side of the retaining row piles 5 during the construction process, providing guarantee for the safety of the later construction of the deep foundation pit, and having good economy and safety.

[0022] Please refer to the attached Figure 1 and the attached Figure 2 , the construction method and working principle of the present utility model are as follows:

[0023] When constructing the basement floor slab 4 in a deep foundation pit, a drainage culvert 1 is arranged at the bottom on one side of the retaining row piles 5. The drainage culvert 1 is a finished product with a concrete-made hollow double-layer structure. The inside of the hollow double-layer structure is filled with water-absorbing sponges, namely water-absorbing materials 3, and hydrophobic holes 2 are reserved around the drainage culvert 1. When leakage occurs at the bottom or side of the retaining row piles 5, the seepage water can be directly collected inside the drainage culvert 1 through the hydrophobic holes 2, and then concentratedly discharged into the temporary sump in the deep foundation pit, namely the drainage structure, through the drainage culvert 1, avoiding the use of the traditional method of plugging with quick-drying cement and affecting the construction period, thus ensuring the construction safety of the deep foundation pit.

[0024] The above are only the preferred embodiments of the present invention and are not used to limit the protection scope of the present invention. Therefore, any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A deep foundation pit bottom plate construction dark channel hydrophobic device, characterized in that: It includes a drainage culvert (1). One end of the drainage culvert (1) is located within the leakage area of the retaining sheet piles (5) of the deep foundation pit, and the other end of the drainage culvert (1) extends to the drainage structure of the deep foundation pit; the drainage culvert (1) is a hollow box-shaped structure, and a number of hydrophobic holes (2) are formed at intervals around the drainage culvert (1), so that the seepage water enters the hollow chamber of the drainage culvert (1) through the hydrophobic holes (2) and is discharged to the drainage structure of the deep foundation pit.

2. The deep foundation pit floor construction blind drain hydrophobic device according to claim 1, characterized in that: The box body of the drainage culvert (1) is a hollow double-layer structure, and the hollow double-layer structure is filled with water-absorbing materials (3).

3. The deep foundation pit bottom plate construction blind ditch hydrophobic device according to claim 1 or 2, characterized in that: The drainage culvert (1) is buried under the bottom plate (4) of the deep foundation pit, and the cushion layer and the bottom plate (4) of the deep foundation pit cover the drainage culvert (1), so that the drainage culvert (1) and the cushion layer and the bottom plate (4) of the deep foundation pit form an integral body.

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