层状岩体隧道的地震响应规律研究  

Seismic Response Law of a Tunnel in a Stratified Rock Mass

作　　者：胡鸿运[1,2] 周晓军[1,2] 刘建国[1,2] 陈韬[3] 

机构地区：[1]西南交通大学交通隧道工程教育部重点实验室,成都610031 [2]西南交通大学土木工程学院,成都610031 [3]西南交通大学交通运输与物流学院,成都610031

出　　处：《现代隧道技术》2017年第5期44-53,共10页Modern Tunnelling Technology

基　　金：国家自然科学基金项目(51378436);中央高校基本科研业务费专项资金(2682017CX022)

摘　　要：基于层状岩体的横观各向同性特点,文章研究了层状岩体中隧道的地震响应规律。首先,综合隧道抗震计算自由场变形法和三维横观同性介质相速度的研究成果,推导出了层状岩体中隧道抗震计算公式;其次,结合某层状岩体物性参数和隧道参数,以地震波入射角、岩层倾角和层面内与层面法向弹性模量比为变量,进行了大量的数值计算;最后,对比分析计算结果,得出了隧道响应规律及最大应变对应的工况。The seismic response law of tunnels in stratified rock masses is studied considering the characteristics of the transverse isotropy of a stratified rock mass. An aseismic calculation formula for a tunnel in a stratified rock mass is derived based on the free-field deformation method and results of research on phase velocity in a three-di- mensional transversely isotropic medium. A large number of numerical calculations are conducted based on the physical parameters of certain stratified rock masses and the variables of incident angle of the seismic wave, dip an- gle and ratio of the elastic moduli parallel and perpendicular to the rock stratum. The law of the tunnel＇s seismic re- sponse and the working conditions corresponding to the maximum strain are obtained by comparing the results of the analysis and calculations.

关 键 词：层状岩体 隧道 地震响应 

分 类 号：U452.28[建筑科学—桥梁与隧道工程]