穿越断层破碎带隧道设置减震层的振动台模型试验  

Shaking table test for tunnel with shock absorption layer though fault zone

作　　者：耿萍[1] 唐金良[1] 权乾龙[1] 何川[1] 晏启祥[1] 

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,四川成都610031

出　　处：《中南大学学报（自然科学版）》2013年第6期2520-2526,共7页Journal of Central South University:Science and Technology

基　　金：国家重点基础研究发展规划("973"计划)项目(2011CB013605);四川省应用基础计划项目(2012JY0095);高铁联合基金重点项目(U1134208)

摘　　要：以某高地震烈度区穿越断层破碎带的铁路隧道工程为依托,开展设置减震层的振动台物理模型试验,介绍试验方案及过程,包括试验装置、试验内容、模型相似比、模型箱体设计、相似材料、测试方案及传感器布置、地震波输入及加载制度等,并对设置减震层的减震效果进行分析。试验结果表明:对高地震烈度区穿越断层破碎带隧道振动台模型试验的设计方案合理可行,设置减震层是一种降低地震荷载作用下衬砌的内力峰值,提高隧道抗震性能的有效手段。A railway tunnel in high seismic intensity region was selected as the prototype to conduct shaking table test. The whole test scheme and process, including the test facility, experimental contents, the similarity ratio of model, the design of model box, the similarity materials, the layout of measure sensors and test scheme, the wave input and the load subsequence, were introduced systematically. The effects of vibration-absorption layer in the test were also analyzed. Test results show that the design scheme of shaking table test is reasonable and feasible for the tunnel in the high seismic intensity zone through fault. Setting shock absorption layer for tunnels is an effective means which could reduce the peak internal force of lining under seismic load and improve earthquake resistant capability of tunnel.

关 键 词：断层破碎带 铁路隧道 减震层 振动台试验 

分 类 号：TU943[建筑科学—建筑技术科学]