Assembled anti-collapse deep foundation pit supporting steel casing

Abstract

The utility model relates to an assembled anti-collapse deep foundation pit supporting steel casing which comprises a first supporting steel casing body and a second supporting steel casing body, and a connecting assembly is installed between the first supporting steel casing body and the second supporting steel casing body. The connecting assembly comprises a first supporting steel casing and a second supporting steel casing, connecting pieces are fixedly installed at the two ends of the first supporting steel casing and the two ends of the second supporting steel casing, screw holes are formed in the four corners in the four connecting pieces, screw rods are in threaded connection with the interiors of the four screw holes, and nuts are movably installed on the outer surfaces of the four screw rods. According to the assembled anti-collapse deep foundation pit supporting steel casing, the connecting assemblies are arranged, so that the supporting steel casing adopts modular design, can be assembled and disassembled according to actual engineering requirements, is high in flexibility and convenient to transport and construct on site, is composed of the framework and the steel plates, is made of high-strength steel, and is convenient to assemble and disassemble. And large soil pressure and underground water pressure can be borne, and the safety of foundation pit supporting is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of deep foundation pit operation in pipe shaft engineering, and particularly relates to an assembled anti-collapse deep foundation pit supporting steel casing. Background Technique

[0002] The steel casing in deep foundation pit support is an important structure used to support the pit wall, prevent soil collapse and maintain the stability of the pit wall during the excavation and construction of deep foundation pits. It is usually made of high-strength steel, has good pressure-bearing capacity, can prevent groundwater seepage, and provides a safe working environment for construction.

[0003] In the past, the operation pits needed to be sloped, which required a large area of road surface to be damaged, and there were many potential safety hazards. It also affected the travel of citizens, causing adverse effects. Moreover, during the excavation of deep foundation pits, especially when encountering soft soil layers, silt soil layers or soil layers with high water content, the stability of the soil is poor and it is easy to collapse. In order to avoid potential safety hazards to the personal safety of construction workers and accidents, an assembled anti-collapse deep foundation pit supporting steel casing is provided to solve the above-mentioned problems. Content of the Utility Model

[0004] Aiming at the deficiencies of the prior art, the utility model provides an assembled anti-collapse deep foundation pit supporting steel casing, which has the advantages of preventing collapse, etc., and solves the problem that during the excavation of deep foundation pits, especially when encountering soft soil layers, silt soil layers or soil layers with high water content, the stability of the soil is poor and it is easy to collapse.

[0005] To achieve the above object, the utility model provides the following technical solution: an assembled anti-collapse deep foundation pit supporting steel casing, including a first supporting steel casing and a second supporting steel casing, and a connecting component is installed between the first supporting steel casing and the second supporting steel casing;

[0006] The connecting component includes that connectors are fixedly installed at both ends of the first supporting steel casing and the second supporting steel casing. Four screw holes are opened at the four corners inside the four connectors. Screws are threadedly connected inside the four screw holes. Nuts are movably installed on the outer surfaces of the four screws. Rectangular grooves are opened inside two of the connectors. Rectangular strips are fixedly installed on the fronts of two of the connectors. Sealing strips are fixedly installed on the outer surfaces of the two rectangular strips.

[0007] Preferably, the first supporting steel casing and the second supporting steel casing are installed through the connecting component.

[0008] Preferably, the two rectangular strips both extend into the rectangular grooves, and the two sealing strips are both in fit with the inner walls of the rectangular grooves.

[0009] Preferably, the surfaces of every two of the connecting members are in contact with each other, and the four corners of the surfaces where every two connecting members are in contact are all installed through screws and nuts.

[0010] Preferably, both the first support steel casing and the second support steel casing are composed of a skeleton and a steel plate, and steel plates are welded to the peripheries of the outer surfaces of the two skeletons.

[0011] Preferably, a protection assembly is arranged on the outer surfaces of the first support steel casing and the second support steel casing. The protection assembly includes an anticorrosion layer fixedly installed on the outer surfaces of the first support steel casing and the second support steel casing respectively, and a wear-resistant layer is fixedly connected to the outer surface of the anticorrosion layer.

[0012] Compared with the prior art, the technical solution of the present application has the following beneficial effects:

[0013] For this assembled anti-collapse deep foundation pit support steel casing, by setting the connection assembly, the support steel casing adopts a modular design, can be assembled and disassembled according to the actual engineering needs, has high flexibility, is convenient for transportation and on-site construction, and at the same time is composed of a skeleton and a steel plate, made of high-strength steel, and can withstand large earth pressure and groundwater pressure, ensuring the safety of foundation pit support. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a three-dimensional view of the structure of the present utility model;

[0015] Figure 2 is an exploded view of the structure of the present utility model;

[0016] Figure 3 is a top view of the structure of the present utility model.

[0017] In the figure: 1, the first support steel casing; 101, the skeleton; 102, the steel plate; 2, the second support steel casing; 3, the connection assembly; 301, the connecting member; 302, the screw hole; 303, the screw; 304, the nut; 305, the rectangular groove; 306, the rectangular strip; 307, the sealing strip; 4, the protection assembly; 401, the wear-resistant layer; 402, the anticorrosion layer. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0019] Embodiment 1

[0020] Please refer to Figures 1-3 In this embodiment, an assembled anti-collapse deep foundation pit supporting steel casing includes a first supporting steel casing 1 and a second supporting steel casing 2, and a connecting component 3 is installed between the first supporting steel casing 1 and the second supporting steel casing 2.

[0021] Specifically, the steel casing in deep foundation pit support is an important structure used to support the pit wall, prevent soil collapse, and maintain the stability of the pit wall during the excavation and construction of deep foundation pits. The first supporting steel casing 1 and the second supporting steel casing 2 are usually made of high-strength steel, have good pressure-bearing capacity, can prevent groundwater seepage, and provide a safe working environment for construction.

[0022] Embodiment 2

[0023] Please refer to Figures 1-3 In this embodiment, an assembled anti-collapse deep foundation pit supporting steel casing, the connecting component 3 includes connecting pieces 301 fixedly installed at both ends of the first supporting steel casing 1 and the second supporting steel casing 2. Thread holes 302 are opened at the four corners inside the four connecting pieces 301. Screws 303 are threadedly connected inside the four thread holes 302. Nuts 304 are movably installed on the outer surfaces of the four screws 303. Rectangular grooves 305 are opened inside two of the connecting pieces 301. Rectangular strips 306 are fixedly installed on the fronts of two of the connecting pieces 301. Sealing strips 307 are fixedly installed on the outer surfaces of the two rectangular strips 306.

[0024] Specifically, the first supporting steel casing 1 and the second supporting steel casing 2 can be assembled through the connecting component 3. Align the first supporting steel casing 1 and the second supporting steel casing 2, the connecting pieces 301 at both ends are fitted together. At the same time, the rectangular strip 306 is inserted into the rectangular groove 305, and the sealing strip 307 is fitted against the inner wall of the rectangular groove 305. Then, the connecting pieces 301 are installed by using the screws 303 and the nuts 304 to achieve the connection purpose, and the operation is simple and fast.

[0025] Embodiment 3

[0026] Please refer to Figures 1-2 In this embodiment, an assembled anti-collapse deep foundation pit supporting steel casing, both the first supporting steel casing 1 and the second supporting steel casing 2 include skeletons 101 fixedly installed inside the first supporting steel casing 1 and the second supporting steel casing 2 respectively. Steel plates 102 are welded to the four circumferential sides of the outer surface of the skeleton 101.

[0027] Specifically, the frameworks 101 of the first support steel casing 1 and the second support steel casing 2 are made of channel steel. Channel steel is a common section steel with a concave-shaped cross-section, having high strength and rigidity, and is suitable for use as the main frame of a load-bearing structure. The outside of the framework 101 is covered with steel plates 102, and these steel plates 102 are fixed to the channel steel framework 101 by welding, forming a closed cuboid structure. Due to the supporting effect of the overall structure, it can still provide sufficient strength and stability. Made of high-strength steel, it can withstand large earth pressure and groundwater pressure, ensuring the safety of foundation pit support. Compared with traditional concrete support, the steel casing can be reused, reducing the consumption of building materials and being more environmentally friendly and energy-saving; due to the characteristics of modular design and rapid installation, the construction speed of the steel casing is fast, greatly shortening the construction period of foundation pit support.

[0028] Embodiment 4

[0029] Please refer to Figures 1-2 , in an assembled anti-collapse deep foundation pit support steel casing in this embodiment, a protection component 4 is provided on the outer surfaces of the first support steel casing 1 and the second support steel casing 2. The protection component 4 includes an anti-corrosion layer 402 fixedly installed on the outer surfaces of the first support steel casing 1 and the second support steel casing 2 respectively, and a wear-resistant layer 401 is fixedly connected to the outer surface of the anti-corrosion layer 402.

[0030] Specifically, setting the anti-corrosion layer 402 can ensure that the first support steel casing 1 and the second support steel casing 2 have anti-corrosion effects and improve the corrosion resistance of the steel casing; and the setting of the wear-resistant layer 401 improves the service life of the steel casing.

[0031] In summary, for this assembled anti-collapse deep foundation pit support steel casing, by setting the connection component 3, the support steel casing adopts a modular design, can be assembled and disassembled according to the actual engineering needs, has high flexibility, is convenient for transportation and on-site construction, and at the same time is composed of a framework 101 and steel plates 102, made of high-strength steel, can withstand large earth pressure and groundwater pressure, and ensures the safety of foundation pit support.

[0032] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the said element.

[0033] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present utility model, and the scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. An assembled anti-collapse deep foundation pit support steel casing, comprising a No. 1 support steel casing (1) and a No. 2 support steel casing (2), characterized in that: A connecting assembly (3) is installed between the No. 1 supporting steel casing (1) and the No. 2 supporting steel casing (2); The connection assembly (3) comprises a No. 1 supporting steel casing (1) and a No. 2 supporting steel casing (2), both ends of which are fixedly mounted with connection pieces (301), four corners of the four connection pieces (301) are provided with screw holes (302), the insides of the four screw holes (302) are threadedly connected with screw rods (303), the outer surfaces of the four screw rods (303) are movably mounted with nuts (304), two of the connection pieces (301) are provided with rectangular grooves (305), the front faces of the two connection pieces (301) are fixedly mounted with rectangular strips (306), and the outer surfaces of the two rectangular strips (306) are fixedly mounted with sealing strips (307).

2. The assembled anti-collapse deep foundation pit support steel casing according to claim 1 is characterized by: The No. 1 supporting steel casing (1) and the No. 2 supporting steel casing (2) are installed via a connecting assembly (3).

3. The assembled anti-collapse deep foundation pit support steel casing according to claim 1 is characterized by: The two rectangular strips (306) both extend to the inside of the rectangular groove (305), and the two sealing strips (307) both fit the inner wall of the rectangular groove (305).

4. The assembled anti-collapse deep foundation pit support steel casing according to claim 1 is characterized by: The surfaces of every two connecting members (301) are in contact with each other, and the four corners of the surfaces of every two connecting members (301) in contact with each other are mounted via screw rods (303) and nuts (304).

5. The assembled anti-collapse deep foundation pit support steel casing according to claim 1 is characterized by: The No. 1 supporting steel casing (1) and the No. 2 supporting steel casing (2) both consist of a frame (101) and a steel plate (102), and the steel plates (102) are welded around the outer surfaces of the two frames (101).

6. The assembled anti-collapse deep foundation pit support steel casing according to claim 1 is characterized by: The outer surfaces of the No. 1 supporting steel casing (1) and the No. 2 supporting steel casing (2) are both provided with a protection component (4), and the protection component (4) comprises an anti-corrosion layer (402) fixedly installed on the outer surfaces of the No. 1 supporting steel casing (1) and the No. 2 supporting steel casing (2), respectively, and the outer surface of the anti-corrosion layer (402) is fixedly connected with a wear-resistant layer (401).

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