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Temporary transverse support and temporary support device of double sidewall heading tunnel, and assembly and disassembly method of temporary support device

A double-side-wall guide pit and horizontal support technology is applied in tunnels, tunnel linings, shaft equipment, etc. It can solve the problems that the horizontal support cannot be reused, a large amount of construction waste and scrap steel, and the noise in the demolition process is large, so as to reduce the Small amount of construction waste and waste materials generated, high support strength, and the effect of improving construction efficiency

Pending Publication Date: 2019-06-14
THE FIRST ENG OF CHINA RAILWAY 16TH CONSTR BUREAU GROUP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this process, the horizontal support cannot be reused
The problems of this method are: the installation process takes a long time; the demolition process is noisy and dusty, and will generate a lot of construction waste and scrap steel; there is a certain degree of danger in the oxygen welding and cutting operation in a narrow space such as a tunnel

Method used

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  • Temporary transverse support and temporary support device of double sidewall heading tunnel, and assembly and disassembly method of temporary support device
  • Temporary transverse support and temporary support device of double sidewall heading tunnel, and assembly and disassembly method of temporary support device
  • Temporary transverse support and temporary support device of double sidewall heading tunnel, and assembly and disassembly method of temporary support device

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Embodiment

[0032] Such as Figure 1 to Figure 3 As shown, the temporary horizontal support of the double-side wall pilot tunnel tunnel in this embodiment is horizontally supported between the steel arch frame 1 of the main tunnel and the temporary vertical support 2, and the temporary horizontal support is a strip prefabricated by molded concrete and reinforcement. Shaped support rod 3, when supporting, the support rod 3 can be conveniently connected and fixed with the steel arch frame 1 of the main tunnel and the temporary vertical support 2, and there is no need to carry out steps such as welding the steel arch frame and pouring concrete on site; After the tunnel construction is completed, when this section does not need to be supported, the support rod 3 can be easily disassembled and transported to the next construction section for installation and support. Compared with the traditional horizontal support formed by pouring concrete, the temporary horizontal support of this embodiment...

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Abstract

The invention discloses a temporary transverse support and a temporary support device of a double sidewall heading tunnel, and an assembly and disassembly method of the temporary support device. The temporary transverse support is transversely supported between steel arching of a main cave and a temporary vertical support, the temporary transverse support is a strip-shaped support rod prefabricated with model-building concrete and reinforcing bars, concave butt avoidance areas are arranged at the two ends of the support rod, and the shapes of the butt avoidance areas are matched with ends of adevice to be butted. The temporary transverse support has the advantages that disassembly and assembly are convenient, reusing can be realized, the cost can be lowered, and tunnel safety can be improved. The temporary support device also has the above advantages by using the temporary transverse support, in addition, the assembly and disassembly method has the advantages of fast, convenient, andefficient of disassembly and assembly of the temporary support device.

Description

technical field [0001] The invention relates to a temporary support structure and an assembly method thereof, in particular to a temporary horizontal support for a double-side-wall pilot pit tunnel, a support device and an assembly and disassembly method thereof. Background technique [0002] Existing tunnels with large cross-sections and weak surrounding rocks are usually constructed using the double-side-wall pilot-pit method. When the two-side-wall pilot pits are excavated, the surrounding rock pressure of the tunnel excavation increases, and the bending moment and axial force on the supporting device gradually increase. The initial support structure will undergo obvious sliding deformation into the hole. The traditional treatment method is to set up a temporary reinforced concrete inverted arch, that is, it is necessary to weld the steel arch frame and pour concrete at the corresponding position to form a horizontal support. After the construction is completed, use a hand...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D11/12E21D11/18
Inventor 肖欧辉傅金阳赵宁宁杨鹰蒋新雨李书挠刘任韩晓庆夏海傅建豪张家强
Owner THE FIRST ENG OF CHINA RAILWAY 16TH CONSTR BUREAU GROUP
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