基于ANSYS的隧道减震措施及分析

Analysis of Shock Absorption Measures in Tunnels Based on ANSYS Software

基于ANSYS有限元分析软件中的瞬态动力学分析方法,分析了在隧道施工中设置减震层和注浆加固一定范围内围岩这两种减震措施的适用条件、减震原理及减震效果,计算结果表明:设置减震层和注浆加固层都能在一定程度上减小衬砌的内力和最大位移差,起到减震作用,但相比之下,减震层的减震效果不太明显,而注浆加固层的减震效果较好,能够大幅度降低衬砌的内力和位移差,起到保护衬砌的作用。

Based on the dynamics analysis of ANSYS, the seismic responses of the tunnel are calculated by changing parameters of surrounding rocks within certain influencing distances to the linings. Two kinds of shock absorption measures, which are setting shock layer and grouting in the surrounding rock, are investigated. The shock absorption effects, applicability, and shock mechanisms are analyzed. The results show that setting shock layer and grouting in the surrounding rock can decrease the differential displacement and stress in the lining of the tunnel, grouting in the surrounding rock is a better way to decrease the seismic responses and protect linings for tunnels. The results provide useful reference for the shock absorption design of tunnel.