Tunnel supporting structure for tunnel construction

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By installing reinforcement mechanisms in the tunnel support structure, the problem of insufficient load-bearing capacity at soft base layers is solved, enhancing the stability and safety of the tunnel support and ensuring stability and safety during construction.

CN224300891UActive Publication Date: 2026-05-29CHINA CONSTR SEVENTH ENG DIVISION CORP LTD

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Patent Information

Application Number: CN202521115838.5
Authority / Receiving Office: CN · China
Patent Type: Utility models(China)
Current Assignee / Owner
Filing Date: 2025-06-03
Publication Date: 2026-05-29
Estimated Expiration: 2035-06-03

Application Information

Patent Timeline

03 Jun 2025

Application

CN202521115838.5

29 May 2026

Publication

CN224300891U

IPC: E21D11/10; E21D11/15

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Application Domain

Underground chambers Tunnel lining

Technology Topics

Architectural engineering Tunnel wall

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AI Technical Summary

Technical Problem

The existing tunnel support structure has insufficient load-bearing capacity in soft base areas, causing the steel reinforcement frame to tilt and sink, affecting the overall stability and safety.

Method used

A reinforcement mechanism is installed at the bottom of the steel frame, including a pad, fixing components and a support mechanism, to increase the contact area and evenly distribute the load. Fixing is achieved through threaded connections and locking components between the connecting column, sleeve and base.

Benefits of technology

It improves the load-bearing capacity of the tunnel support structure on soft ground, prevents the steel frame from sinking into the bottom layer, reduces the risk of tilting or displacement, and maintains overall stability and safety.

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Abstract

The utility model discloses a tunnel supporting structure for tunnel construction, which comprises a steel bar frame arranged on a tunnel wall, the steel bar frame is composed of a plurality of longitudinal steel bars and a plurality of transverse steel bars, the longitudinal steel bars and the transverse steel bars are crisscrossed and attached to the tunnel wall, and a plurality of groups of concrete are poured on the surface of the steel bar frame. Supporting mechanisms are arranged among the multiple sets of concrete. By means of the designed reinforcing mechanism, in the construction process of the tunnel supporting structure, the reinforcing mechanism is synchronously installed on the tunnel ground and fixedly connected with the steel bar frame, the reinforcing mechanism increases the contact area of the steel bar frame and the soft ground, the soft bottom layer can bear larger loads, the steel bar frame is prevented from sinking into the bottom layer, and the reinforcing mechanism can make the steel bar frame stressed more evenly; and the inclination or displacement risk caused by overlarge local stress is reduced, and the overall stability of the overall tunnel supporting structure is maintained.

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