Pit-in-pit steel sheet pile support and modular waterproof system for deep foundation pit

Abstract

The utility model relates to a pit-in-pit steel sheet pile supporting and modularized waterproof system for a deep foundation pit. The pit-in-pit steel sheet pile supporting and modularized waterproof system comprises Larsen steel sheet piles, supporting steel sheets and waterproof coiled materials. The two ends of the Larsen steel sheet piles are spliced and connected to form the outline of a pit-in-pit of the deep foundation pit. The outer side face of the supporting steel plate is connected with a Larsen steel plate pile support through a supporting rod to form a support. After the support steel plate is connected with the Larsen steel plate pile support, grouting is performed between the support steel plate and the Larsen steel plate pile to form pouring concrete; the waterproof roll is arranged on the inner side face of the supporting steel plate to form a waterproof layer. The two ends of the multiple supporting steel plates are fixedly connected to form the steel plate pile supporting and modularized waterproof system structure. The supporting structure can be erected according to the outline of the deep foundation pit on site, good supporting can be carried out, good waterproof performance is achieved, safety is high, and construction is convenient and fast.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction, in particular to a deep foundation pit steel sheet pile support and modular waterproofing system. Background Art

[0002] With the rapid development of the economy, there are more and more super-high-rise buildings, and more and more super-deep foundation pits are being constructed for super-high-rise buildings. There are great technical and safety risks in the construction of super-deep foundation pits. It is particularly important to choose safe, reliable, convenient and economically reasonable construction structures and methods. Utility Model Content

[0003] In order to meet the above-mentioned defects of the prior art, the purpose of the utility model is to provide a deep foundation pit steel sheet pile support and modular waterproofing system, which can provide good support for the deep foundation pit and has a waterproofing effect.

[0004] The utility model is realized by adopting the following technical solutions:

[0005] A deep foundation pit steel sheet pile support and modular waterproofing system, comprising Larsen steel sheet piles, supporting steel plates and waterproofing membranes; the two ends of the Larsen steel sheet piles are assembled and connected to form the outline of the pit in the deep foundation pit; the outer side of the supporting steel plate is connected to the Larsen steel sheet pile support through a supporting rod to form a support; after the supporting steel plate is connected to the Larsen steel sheet pile support, grouting is performed between the supporting steel plate and the Larsen steel sheet pile to form poured concrete; the waterproofing membrane is arranged on the inner side of the supporting steel plate to form a waterproof layer; the two ends of a plurality of the supporting steel plates are fixedly connected to form a steel sheet pile support and modular waterproofing system structure.

[0006] Furthermore, an adjustable connecting seat is provided on the surface of the supporting steel plate facing the poured concrete; the supporting rod includes a connecting rod and a fixing flange; a fixing flange is provided at one end of the connecting rod, and a connecting slot is provided at the other end; a lateral connecting pin hole is provided in the connecting slot; the adjusting connecting seat is clamped with the connecting slot, and the connecting slot is fixed to the adjusting connecting seat by a bolt assembly passing through the connecting pin hole; the fixing flange is fixedly connected to the Larsen steel sheet pile 1 by screws.

[0007] Furthermore, connecting bevels are provided on both side surfaces of the supporting steel plates, and adjacent supporting steel plates are butt-jointed via the connecting bevels and then fixed by welding.

[0008] Furthermore, the surface of the supporting steel plate facing the poured concrete is arranged as a patterned surface, and the surface facing the deep foundation pit is arranged as a flat surface; a roll material adhesive layer is arranged on the flat surface facing the deep foundation pit; and the waterproofing roll material is fixed on the supporting steel plate through the roll material adhesive layer.

[0009] Furthermore, both ends of the Larsen steel sheet pile splicing connection are welded and fixed by 90-degree Larsen steel sheet angle piles.

[0010] To sum up, the utility model has the following beneficial effects: the utility model can set up a supporting structure according to the contour of the deep foundation pit on site, can provide good support and waterproofing, focuses on resolving the problems of limited space in the pit, difficult support, slow progress, etc., and properly solves the technical difficulty and safety risk of waterproofing construction on the side of the pit. It is a construction structure with high safety, convenient construction, and economical rationality, creating good economic and social benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0012] Figure 2 It is a schematic diagram of the connection structure of Larsen steel sheet piles, supporting steel plates and waterproof membranes of the utility model.

[0013] Figure 3 It is a schematic diagram of the installation structure of the supporting steel plate of the utility model.

[0014] Figure 4 This is a schematic diagram of the support rod structure of the utility model.

[0015] Figure 5 It is a schematic diagram of the overall butt joint structure of the two ends of the Larsen steel sheet pile after connection of the utility model.

[0016] Among them: Larsen steel sheet pile 1; support steel plate 2; waterproof membrane 3; poured concrete 4; support rod 5; membrane adhesive layer 6; adjustable connecting seat 7; connecting inclined surface 21; connecting rod 51; fixing flange 52; connecting slot 53; connecting pin hole 54. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0018] Example

[0019] like Figures 1 to 5As shown, a deep foundation pit steel sheet pile support and modular waterproofing system includes a Larsen steel sheet pile 1, a supporting steel plate 2 and a waterproofing membrane 3; the two ends of the Larsen steel sheet pile 1 are assembled and connected to form the outline of the pit in the deep foundation pit; the outer side of the supporting steel plate 2 is supported and connected to the Larsen steel sheet pile 1 through a supporting rod 5 to form a support; after the supporting steel plate 2 is supported and connected to the Larsen steel sheet pile 1, grouting is performed between the supporting steel plate 2 and the Larsen steel sheet pile 1 to form pouring concrete 4; the waterproofing membrane 3 is arranged on the inner side of the supporting steel plate 2 to form a waterproof layer; the two ends of a plurality of the supporting steel plates 2 are fixedly connected to form a steel sheet pile support and modular waterproofing system structure. The utility model can set up a support structure according to the contour of the deep foundation pit on site, can provide good support and waterproof, and focuses on resolving the problems of limited space in the pit, great support difficulty, slow progress, etc., and properly solves the technical difficulty and safety risk of waterproof construction on the side of the pit in the pit. It is a construction structure with high safety, convenient construction, and economic rationality, creating good economic and social benefits. The support steel plate 2 is provided with an adjustable connecting seat 7 on the surface facing the poured concrete 4; the support rod 5 includes a connecting rod 51 and a fixing flange 52; the connecting rod 51 is provided with a fixing flange 52 at one end and a connecting slot 53 at the other end; the connecting slot 53 is provided with a lateral connecting pin hole 54; the adjusting connecting seat 7 is clamped with the connecting slot 53, and the connecting slot 53 is fixed to the adjusting connecting seat 7 by passing the bolt assembly through the connecting pin hole 54; the fixing flange 52 is fixedly connected to the Larsen steel sheet pile 1 by screws, which is convenient for adjusting the position of the supporting rod 5 according to the depth of the deep foundation pit, achieving a good supporting effect, and is easy to install and has adjustability.

[0020] As a preferred embodiment, connecting bevels 21 are provided on both sides of the supporting steel plates 2. Adjacent supporting steel plates 2 are butted together via the connecting bevels 21 and then fixed by welding, thereby ensuring the fixed sealing of the connecting parts and reducing leakage.

[0021] As a preferred embodiment, the surface of the supporting steel plate 2 facing the poured concrete 4 is set as a patterned surface, and the surface facing the deep foundation pit is set as a plane; a roll material adhesive layer 6 is set on the plane facing the deep foundation pit; the waterproofing roll 3 is fixed on the supporting steel plate 2 through the roll material adhesive layer 6, which improves the pouring strength and the convenience of modular installation of the waterproofing roll 3. According to the specifications of the waterproofing roll 3, multiple adhesive areas of the roll material adhesive layer 6 corresponding to the specifications of the waterproofing roll 3 can be set for modular installation. The two ends of the spliced ​​connection of the Larsen steel sheet pile 1 are welded and fixed by 90-degree Larsen steel sheet angle piles.

[0022] Application examples:

[0023] When in use, the two ends of the Larsen steel sheet pile 1 are assembled and connected to form the outline of a pit in a deep foundation pit, and the outer side of the supporting steel plate 2 is supported and connected to the Larsen steel sheet pile 1 through the supporting rod 5 to form a support. By adjusting the fixed position of the fixing flange 52 on the Larsen steel sheet pile 1, and then fixing the connecting rod 51 and the adjusting connecting seat 7, grouting is then performed between the supporting steel plate 2 and the Larsen steel sheet pile 1 to form pouring concrete 4 to form a support system, and then the modular waterproof membrane 3 is fixed to the corresponding membrane adhesive layer 6 Adhesive area for installation, which effectively prevents leakage. The overall operation and installation are simple, safe, and effective in preventing leakage.

[0024] Although the above describes and illustrates the specific implementation methods of the present invention in detail, it should be pointed out that: we can make various equivalent changes and modifications to the above implementation methods based on the concept of the present invention, and the functional effects produced by them still do not exceed the spirit covered by the specification, and they should all be within the protection scope of the present invention.

Claims

1. A deep foundation pit steel sheet pile support and modular waterproofing system, comprising Larsen steel sheet piles, supporting steel plates and waterproofing coiled materials; characterized in that: The two ends of the Larsen steel sheet piles are assembled and connected to form the outline of a pit in a deep foundation pit; the outer side of the supporting steel plate is connected to the Larsen steel sheet pile support through a supporting rod to form a support; after the supporting steel plate is connected to the Larsen steel sheet pile support, grouting is performed between the supporting steel plate and the Larsen steel sheet pile to form poured concrete; the waterproof membrane is arranged on the inner side of the supporting steel plate to form a waterproof layer; the two ends of a plurality of the supporting steel plates are fixedly connected to form a steel sheet pile support and a modular waterproof system structure.

2. A deep foundation pit steel sheet pile support and modular waterproofing system according to claim 1, characterized in that: The support steel plate is provided with an adjustable connecting seat on the surface facing the poured concrete; the support rod includes a connecting rod and a fixing flange; a fixing flange is provided at one end of the connecting rod, and a connecting slot is provided at the other end; a lateral connecting pin hole is provided in the connecting slot; the adjustable connecting seat is clamped with the connecting slot, and the connecting slot is fixed to the adjustable connecting seat by a bolt assembly passing through the connecting pin hole; the fixing flange is fixedly connected to the Larsen steel sheet pile 1 by screws.

3. A deep foundation pit steel sheet pile support and modular waterproofing system according to claim 1, characterized in that: The two side surfaces of the support steel plates are provided with connecting inclined surfaces, and the adjacent support steel plates are butt-jointed via the connecting inclined surfaces and then fixed by welding.

4. A deep foundation pit steel sheet pile support and modular waterproofing system according to claim 1, characterized in that: The surface of the supporting steel plate facing the poured concrete is arranged as a patterned surface, and the surface facing the deep foundation pit is arranged as a plane; a roll material adhesive layer is arranged on the plane facing the deep foundation pit; the waterproof roll material is fixed on the supporting steel plate through the roll material adhesive layer.

5. The deep foundation pit steel sheet pile support and modular waterproofing system according to claim 1 is characterized by: The two ends of the Larsen steel sheet pile splicing connection are welded and fixed by 90-degree Larsen steel sheet angle piles.

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