不同开挖进尺下隧道喷锚支护结构受力分析

Stress analysis of shotcrete bolt supporting structure of tunnel under different excavation footage

以某公路隧道开挖为研究对象,基于Midas/GTS数值模拟软件,对比分析1.0 m、1.5 m、2.0 m、3.0 m开挖进尺下隧道开挖过程及开挖后的锚杆、喷混结构的受力变化规律,研究结论对类似工程开挖进尺的选择以及支护结构应力集中位置处的加固及监测具有参考价值。

This paper takes a highway tunnel excavation as the research object,based on Midas/GTS software numerical simulation platform,the paper compares and analyzes the tunnel excavation process under the excavation footage of 1.0 m,1.5 m,2.0 m and 3.0 m,and the stress variation law of anchor bolt and shotcrete structure after excavation is completed.The research conclusion can provide reference value for the selection of excavation footage of similar projects,as well as the reinforcement and monitoring of the stress concentration position of supporting structure.