Bored tunnel corrugated steel-concrete composite lining structure

Abstract

The invention discloses a bored tunnel corrugated steel-concrete composite lining structure. The bored tunnel corrugated steel-concrete composite lining structure comprises an arched corrugated steelstructure and an arched reinforcement structure. The arched reinforcement structure comprises a plurality of longitudinal reinforcements, a plurality of transverse reinforcements and a plurality of single limb stirrups which are arranged at equal intervals, the longitudinal reinforcements and lap-joint positions of the transverse reinforcements are fixedly connected, the lap-joint positions of thelongitudinal reinforcements and the transverse reinforcements are connected to the outer side of the arched corrugated steel structure through the single limb stirrups, and concrete is poured into the outer side of the arched corrugated steel structure and the arched reinforcement structure. The bored tunnel corrugated steel-concrete composite lining structure improves the reliability of the tunnel comprehensive performance, the operation efficiency is improved, the construction is flexible, and manpower and material resources are saved.

Description

technical field [0001] The invention relates to the technical field of needle roller assembly, in particular to a corrugated steel plate-concrete composite lining structure for an underground excavation tunnel. Background technique [0002] With the deepening of infrastructure construction and the development of transportation technology, the mileage of tunnels in my country has increased rapidly. Among these new tunnels, there are many extra-long tunnels and long tunnels. These tunnels often need to be equipped with widened bands. The proportion of upper and higher broadband in road tunnels is about 3%. Due to the difference between the section form of the widened tunnel and the non-widened section, the applicability of the formwork trolley is insufficient. In order to facilitate the operation and management of long tunnels, a certain length of space between the left and right tunnels is used to design cross-holes for people (vehicles). Due to the short distance between the...

AI Technical Summary

Problems solved by technology

It is time-consuming and labor-intensive to set up the brackets of the whole hall, and the extensive use of wooden formwork is not conducive to environmental protection

At the same time, the integrity of the full formwork is poor, it is easy to form runaway formwork, and the quality of the concrete structure is difficult to guarantee

After the concrete pouring is completed, the formwork needs to be removed, resulting in a secondary investment of manpower and material resources, and the residual steel bars are welded. Residual steel nails are easy to stay on the lining surface, which will leave hidden dangers in subsequent operations

Images