埋深及间距对近接并行隧道地震响应的影响研究  

Earthquake Response of Proximity Parallel Tunnel by Depth and Interval

作　　者：周巧玲 董洪昌[2] 任庆东 王文沛[2] 

机构地区：[1]北京丽港建筑装饰工程有限公司,北京100124 [2]北京工业大学岩土与地下工程研究所,北京100022 [3]北京中交桥宇科技有限公司,100102

出　　处：《防灾科技学院学报》2013年第2期1-5,共5页Journal of Institute of Disaster Prevention

摘　　要：利用FLAC有限差分程序,模拟在近场强震作用下双孔并行地铁隧道的地震响应。分析其相对位移差峰值、水平向加速度峰值、水平向应力峰值随埋深及隧道间距径比变化而变化的特性。结果表明:埋深对与隧道的相对位移差、水平加速度及水平应力有显著影响,且随埋深增加显著增大;而距径比影响不明显,只有在距径比等于1时,隧道相对位移差出现峰值。The seismic response of the two holes parallel subway tunnels are simulated in near-field strong earthquake by FLAC finite-difference procedure.Analyzing the changing characteristics of the peak of displacement difference,horizontal acceleration and stress as the changing of depth and the specific value of pitch and diameter,the results show that： the depth can observably influence displacement difference,horizontal acceleration and stress,and the influence will increase as the depth increases;the specific value of pitch and diameter is less functionary than depth,only when the value is equal to 1 can the peak of relatively displacement difference appear.

关 键 词：地震作用 并行隧道 埋深 距径比 

分 类 号：U459.1[建筑科学—桥梁与隧道工程]