Embedded sliding chute anchor leg extension connection member used in tunnel

Abstract

An embedded sliding chute anchor leg extension connection member used in a tunnel aims at effectively solving the problem that an extension structure and a sliding chute anchor leg produce mutual adverse influence when a sliding chute anchor leg connection extension structure is embedded, and is convenient to assemble and disassemble so as to meet the needs of construction assembly and positioning. The embedded sliding chute anchor leg extension connection member comprises a U-shaped connecting member, a reserved sliding chute anchor leg and a limiting bolt assembly. A guide groove leading to the open end is formed in a base plate of the U-shaped connecting member, a limiting hole and an extension interface are formed in a top plate, and the limiting hole is close to the open end and corresponds to the guide groove. The longitudinal section of the reserved sliding chute anchor leg is T-shaped, the head portion of the reserved sliding chute anchor leg is clamped between the base plate and the top plate, and the anchor leg portion penetrates through the guide groove to extend downwards. A bolt in the limiting bolt assembly penetrates through the limiting hole and the guide groove.

Description

technical field [0001] The invention relates to a tunnel, in particular to a tunnel pre-buried chute anchor leg expansion connection member. Background technique [0002] At present, with the planning and construction of the national road network, a large number of railway tunnels, highway tunnels and subways have appeared between mountains and cities. [0003] To meet the needs of rear suspension cables or equipment, the technology of pre-buried channels has been introduced. When the pre-buried channel is set in the plain concrete lining, in order to meet the stress requirements of the later hanging parts, the lining structure needs to be strengthened by measures such as reinforcement. There are two methods commonly used at this stage. One method is to weld the reinforced steel mesh vertically on the anchor leg of the chute. The welding will destroy the original galvanized layer of the anchor leg of the chute, that is, destroy the anchor leg of the chute. The anti-corrosi...

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a tunnel pre-embedded chute anchor leg expansion connection member to effectively solve the problem of mutual adverse influence between the expansion structure and the chute anchor leg when the pre-embedded chute anchor leg is connected to the expansion structure, and It is easy to disassemble and assemble to meet the needs of construction assembly and positioning

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