Novel arched concrete-filled steel tube supporting system and construction method thereof

By combining the arched steel pipe concrete support system with fish belly beams and connecting rods to form an internal force balance structure, the problems of high construction costs and water leakage in traditional foundation pit construction are solved, and efficient load-bearing performance and large working space are achieved.

CN120465482APending Publication Date: 2025-08-12MCC5 GROUP SHANGHAI CORPORATION LIMITED
View PDF 0 Cites 0 Cited by

Patent Information

Application Number
CN202510752720.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-06-06
Publication Date
2025-08-12

AI Technical Summary

Technical Problem

In the construction of traditional large foundation pits, a large number of drilled piles and lattice columns are required to be pre-drawn, resulting in high construction costs and long construction periods. Moreover, the lattice columns are easily leaked in the basement after cutting.

Method used

The arched steel pipe concrete support system is adopted, including the arched steel pipe concrete support, support columns and pier boards. It is connected by embedded parts and combines the fish belly beam and connecting rod to form an internal force balance structure to reduce the use of column piles.

Benefits of technology

It achieves high load-bearing performance, reduces construction costs and construction periods, provides large work space, and avoids water leakage in the basement.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN120465482A_ABST
    Figure CN120465482A_ABST
Patent Text Reader

Abstract

The invention discloses a novel arched concrete-filled steel tube supporting system and a construction method thereof.The novel arched concrete-filled steel tube supporting system comprises an arched concrete-filled steel tube support, supporting columns and trestle plates, the two ends of the arched concrete-filled steel tube support are connected with embedded parts, and the trestle plate located at the top is connected with the arched concrete-filled steel tube support through the supporting columns. And higher bearing performance is achieved, and larger operation space and plane can be provided for construction of a foundation pit at the bottom.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] The present invention relates to the technical field of foundation pit support, and more particularly to a novel arched steel tube concrete support system and a construction method thereof. Background Art

[0002] The first support of traditional large foundation pits is generally reinforced concrete support. The vertical deadweight and load-bearing load of the support are mainly borne by pre-installed bored cast-in-place piles and lattice columns. Therefore, before the foundation pit is excavated, a large number of bored cast-in-place piles and lattice columns need to be pre-installed on site, which consumes a lot of construction costs and construction time. At the same time, the lattice columns serve as temporary vertical load-bearing components and need to be cut and removed later. The interface between the lattice columns and the basement raft slab is very likely to cause water leakage in the basement. Summary of the Invention

[0003] In response to the problems existing in the prior art, the purpose of the present invention is to provide a new type of arched steel tube concrete support system and its construction method, which can greatly reduce the number of column piles, have higher bearing capacity, and provide a larger working space and plane for the foundation pit construction at the bottom.

[0004] The present invention adopts the following technical solutions:

[0005] A novel arched steel tube concrete support system includes an arched steel tube concrete support, a support column and a trestle plate. Both ends of the arched steel tube concrete support are connected to embedded parts, and the trestle plate at the top is connected to the arched steel tube concrete support through the support column.

[0006] Furthermore, two rows of support columns are installed at the lower end of each trestle board, and each row of support columns is installed on the top of an arched steel tube concrete support. The two arched steel tube concrete supports located under the same trestle board are connected by multiple connecting rods.

[0007] Furthermore, a concrete crown beam is cast in the soil of the foundation pit wall, and the embedded parts are installed on the upper end of the concrete crown beam.

[0008] Furthermore, a number of corner supports are installed between two mutually perpendicular concrete crown beams.

[0009] Furthermore, a fish belly beam is installed between the outermost corner support and the adjacent arched concrete-filled steel tube support.

[0010] Furthermore, fish belly beams are installed between both ends of two adjacent arched concrete-filled steel tube supports.

[0011] Furthermore, SMW method pile steel is provided in the concrete cap beam.

[0012] The present invention also discloses a novel construction method of an arched steel tube concrete support system, comprising the following steps:

[0013] Reserve embedded parts for installing arched steel tube concrete supports;

[0014] Construction corner supports;

[0015] Construction of fish belly beam;

[0016] Connect both ends of the prefabricated steel tube concrete support to the embedded parts;

[0017] Connect the connecting rods between the two concrete-filled steel tube supports, and after the overall structure is formed, tension the prestressed steel strands of the fish belly beam;

[0018] Lay the steel trestle deck on the support columns.

[0019] Beneficial effects

[0020] The present invention can realize the function of bearing the upper construction load by balancing its own internal forces, eliminating the construction of column piles, greatly reducing construction costs, shortening the construction period, and providing a large working space for the construction of the bottom foundation pit project;

[0021] The present invention cooperates with the fish belly beam to bear the force together, which is safer and more reliable;

[0022] The present invention eliminates the need for construction of a large number of column piles, and can effectively avoid the subsequent water leakage problem of the raft slab in the foundation pit basement. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a schematic diagram of a novel arched steel tube concrete support system according to one embodiment of the present invention;

[0024] Figure 2 for Figure 1 Middle AA section view;

[0025] Figure 3 It is a schematic diagram of an embodiment of the present invention. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0027] As shown in the figure, the present invention discloses a novel arched concrete-filled steel tube support system, comprising an arched concrete-filled steel tube support 1, support columns 2, and a trestle deck 3. Both ends of the arched concrete-filled steel tube support 1 are connected to embedded components 4, and the trestle deck 3 at the top is connected to the arched concrete-filled steel tube support 1 via support columns 2. The combination of the arched concrete-filled steel tube support 1 and support columns 2 supports the trestle deck 3, eliminating the need for column piles.

[0028] In one embodiment of the present invention, two rows of support columns 2 are mounted at the lower end of each trestle deck 3. Each row of support columns 2 is mounted on top of an arched concrete-filled steel tube support 1. The two arched concrete-filled steel tube supports 1 located below the same trestle deck 3 are connected by multiple connecting rods 5. The lateral supports of the present invention utilize an arched structure, with the arched concrete-filled steel tube supports 1 being the primary load-bearing structural members. This structure converts the deadweight and upper vertical load into horizontal thrust of the arched structure, which is then transmitted to the concrete cap beam 7, effectively controlling the horizontal displacement of the foundation pit wall.

[0029] The two arched concrete-filled steel tube supports 1 are connected to the connecting rod 5 by welding or bolting.

[0030] In one embodiment of the present invention, a concrete crown beam 7 is cast at the foundation pit wall soil 6 , and the embedded part 4 is installed at the upper end of the concrete crown beam 7 .

[0031] In one embodiment of the present invention, a plurality of corner supports 8 are installed between two mutually perpendicular concrete crown beams. There are multiple corner supports 8, and the corner supports 8 on the same side are distributed in parallel.

[0032] In one embodiment of the present invention, a fish beam 9 is installed between the outermost corner support 8 and the adjacent arched concrete-filled steel tube support 1 .

[0033] In one embodiment of the present invention, a fish beam 9 is installed between the ends of two adjacent arched concrete-filled steel tube supports 1. The present invention uses the fish beam 9 to support the force. The fish beam 9 can transmit the horizontal thrust of the foundation pit wall to the arched support through the steel cable, and finally act on the concrete cap beam 7, ensuring the stability of the foundation pit wall.

[0034] In one embodiment of the present invention, a SMW pile steel 10 is provided in the concrete cap beam 7 .

[0035] The present invention also discloses a novel construction method of an arched steel tube concrete support system, comprising the following steps:

[0036] Embedded parts 4 are reserved for installing arched steel tube concrete supports;

[0037] Construction corner support 8;

[0038] Construction of fish belly beam 9;

[0039] Connect both ends of the prefabricated steel tube concrete support 1 to the embedded parts 4;

[0040] Connect the connecting rod 5 between the two steel tube concrete supports 1, and after the overall structure is formed, tension the prestressed steel strands of the fish belly beam;

[0041] Lay the steel trestle deck on the support columns.

[0042] After completing the construction of the above-mentioned main load-bearing system, the connecting channel between the arch support systems will be constructed. The vertical load of this channel is borne by the column piles at the bottom. The construction and structural measures are consistent with the traditional concrete support system.

[0043] The above description is merely a preferred embodiment of the present invention; however, the scope of protection of the present invention is not limited thereto. Any person skilled in the art who, within the technical scope disclosed by the present invention, makes equivalent substitutions or modifications based on the technical solutions and improved concepts of the present invention shall be covered by the scope of protection of the present invention.

Claims

1. A new type of arched steel tube concrete support system, characterized by: It includes an arched steel tube concrete support, a support column and a trestle board. Both ends of the arched steel tube concrete support are connected to the embedded parts, and the trestle board at the top is connected to the arched steel tube concrete support through the support column.

2. The novel arched steel tube concrete support system according to claim 1 is characterized by: Two rows of support columns are installed at the lower end of each trestle plate. Each row of support columns is installed on the top of an arched steel tube concrete support. The two arched steel tube concrete supports located under the same trestle plate are connected by multiple connecting rods.

3. The novel arched steel tube concrete support system according to claim 1 is characterized by: A concrete crown beam is cast in the soil of the foundation pit wall, and the embedded parts are installed at the upper end of the concrete crown beam.

4. The novel arched steel tube concrete support system according to claim 3 is characterized by: Several corner supports are installed between two mutually perpendicular concrete crown beams.

5. The novel arched steel tube concrete support system according to claim 4 is characterized in that: A fish belly beam is installed between the outermost corner support and the adjacent arched concrete-filled steel tube support.

6. The novel arched steel tube concrete support system according to claim 5 is characterized by: Fish belly beams are installed between the two ends of two adjacent arched steel tube concrete supports.

7. The novel arched steel tube concrete support system according to claim 3 is characterized by: SMW pile steel is installed in the concrete crown beam.

8. A novel construction method for an arched steel tube concrete support system, characterized by: The following steps are involved: Reserve embedded parts for installing arched steel tube concrete supports; Construction corner supports; Construction of fish belly beam; Connect both ends of the prefabricated steel tube concrete support to the embedded parts; Connect the connecting rods between the two concrete-filled steel tube supports, and after the overall structure is formed, tension the prestressed steel strands of the fish belly beam; Lay the steel trestle deck on the support columns.