A fixing device for tunnel shield segment surface

Abstract

The invention relates to the technical field of tunneling engineering, in particular to a fixing device for the surface of a tunnel shield segment, comprising: a fastener in a fixing hole of a shield segment, a hook-shaped connecting rod, and a fastening installation piece on the surface of a segment The fasteners in the fixing hole of the shield segment include a top hole fixer, a nut sleeve, and a connecting rod, and the connecting rod adopts a threaded structure, which is matched with the top hole fixer and the nut sleeve 2 threads; The hook-shaped connecting rod adopts a hook shape on one side and a threaded rod shape on one side, and is used to connect the internal fasteners in the fixing holes of the shield segment and the fastening installation parts on the surface of the segment; the surface of the segment is fastened Mounting parts include surface mounting plate and support feet with slope. The invention utilizes the inherent structure in the segment fixing hole to fix the equipment without additional drilling and prevents damage to the segment structure; the installation and construction do not generate smoke and noise, and the installation position is relatively flexible and easy to disassemble.

Description

technical field [0001] The invention relates to the technical field of tunnel construction, in particular to a fixing device for the surface of a tunnel shield segment. Background technique [0002] With the rapid development of urbanization and economy in recent years, the prefabricated shield tunnel structure has become an important component for rapid tunnel excavation and installation. The installation of equipment inside the traditional tunnel is usually fastened with expansion screws or by loosening the fixing screws of the shield segment. [0003] The disadvantages of this type of fixed method are: [0004] 1. Destroy the structural integrity and durability of the shield segment; the implantation of expansion bolts will inevitably damage the shield segment to the interior of the concrete and its steel structure, accelerate the corrosion of the internal steel structure, and cause internal stress distribution. Uneven, affecting its bearing capacity and life. [0005]...

AI Technical Summary

Problems solved by technology

[0004] 1. Destroy the structural integrity and durability of the shield segment; the implantation of expansion bolts will inevitably damage the shield segment to the concrete interior and its steel structure, accelerate the corrosion of the internal steel structure, and cause internal stress distribution Uneven, affecting its bearing capacity and life

[0005] 2. Affect the balance of force between the shields; remove the segment fixing nuts for the fixing method of the equipment installation platform, and destroy the original force balance between the shields

[0006] 3. The installation of expansion screws requires a power supply, which requires a higher on-site power supply

[0007] 4. The expansion screw cannot be disassembled, which brings inconvenience to the maintenance and adjustment of the equipment in the later stage

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