Integrated construction method of full-width inverted arch formwork based on tunnel trestle

Abstract

The invention relates to a full-width inverted arch formwork based on a tunnel trestle and an integrated construction method, and belongs to the technical field of tunnel inverted arch trestles. The full-width inverted arch formwork comprises a trestle body, a full-width trolley, a full-width inverted arch formwork body, an integral central groove formwork, an inverted arch layer end sealing formwork and a filling layer end sealing formwork. The full-width trolley performs self-walking along the trestle body through a walking device, and an oil cylinder at the bottom of the full-width trolleyis connected with the full-width inverted arch formwork body through a lug plate and is a connection and driving mechanism between the trestle body and the full-width inverted arch formwork body. Thefull-width inverted arch formwork has the advantages that the inverted arch construction is more standard, the inverted arch formwork body is not provided with a long longitudinal beam, a backend driver is not provided, and the formwork is simpler; an inverted arch layer and a filling layer are constructed in a same construction area, the construction progress is greatly accelerated, the construction efficiency is improved, the labor intensity is reduced, and the personnel input is reduced; and the construction quality is guaranteed, the safety of tunnel construction is guaranteed, and variousinverted arch construction working conditions are suitable.

Description

technical field [0001] The invention relates to a full-width inverted arch formwork based on a tunnel trestle bridge and an integrated construction method, belonging to the technical field of tunnel inverted arch trestle bridges. Background technique [0002] With the continuous development of my country's railway tunnel construction technology, in order to effectively improve the stability and durability of the inverted arch structure and realize the full-width construction of the inverted arch at one time, the full-width pouring construction has become the basic requirement for tunnel construction. Traditional full-width inverted arch formwork construction Generally, small pieces of steel molds are used in combination. Manual assembly, disassembly, and reinforcement consume a lot of manpower and material resources, and cannot be lifted and moved as a whole; resulting in long construction time, at least four people and four hours for a single assembly, and demolition. It also...

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Problems solved by technology

[0002] With the continuous development of my country's railway tunnel construction technology, in order to effectively improve the stability and durability of the inverted arch structure and realize the full-width construction of the inverted arch at one time, the full-width pouring construction has become the basic requirement for tunnel construction. Traditional full-width inverted arch formwork construction Generally, small pieces of steel molds are used in combination. Manual assembly, disassembly, and reinforcement consume a lot of manpower and material resources, and cannot be lifted and moved as a whole; resulting in long construction time, at least four people and four hours for a single assembly, and demolition. It also takes at least four people and four hours. After the formwork is removed, traditional methods need to be used to move forward, which greatly reduces the construction efficiency of the inverted arch.

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