高烈度地震区黏滑断层隧道减震层减震模型试验研究  

Model tests on damping of shock absorption layer of stick-slip fracture tunnel in highly seismic areas

作　　者：崔光耀 伍修刚 王明年[2] 王道远[3,4] 朱长安 

机构地区：[1]北方工业大学土木工程学院,北京100144 [2]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 [3]河北交通职业技术学院土木工程系,河北石家庄050091 [4]石家庄铁道大学土木工程学院,河北石家庄050091 [5]四川省交通运输厅公路规划勘察设计研究院,四川成都610041

出　　处：《岩土工程学报》2017年第11期2125-2131,共7页Chinese Journal of Geotechnical Engineering

基　　金：国家自然科学基金项目(51408008;51478277);国家十二五科技支撑项目(2012BAK09B06);河北省自然科学基金项目(E201619002);四川省应用基础研究计划项目(2014JY0090;2015JY0166);北方工业大学青年拔尖人才培育计划项目(XN070017)

摘　　要：为提高高烈度地震区黏滑断层隧道的抗震性能,依托都汶高速龙溪隧道F8黏滑断层段,开展了不同厚度减震层的大型静力断层黏滑错动试验和强震震动动力试验,对强震作用下黏滑断层隧道减震层减震技术进行研究。研究结果表明:强震作用下断层黏滑错动对隧道上盘部分的影响程度及影响范围均大于下盘部分,隧道上盘部分是抗震设防设计的重点段落;隧道设置10 cm减震层的减震效果明显优于隧道设置5 cm减震层和15 cm减震层的减震效果,推荐布设厚度为10 cm的减震层。研究成果对提高高烈度艰险山区穿越黏滑断层隧道的抗震性能提供了技术支撑。To improve the anti-seismic performance of tunnels in highly seismic areas with stick-slip fracture,the strong earthquake vibration dynamic tests on the damping layer of large static bond-slip with different thicknesses are performed based on the section of F8 stick-slip fracture in Longxi tunnel of Dujiangyan-Wenchun expressway under earthquake action.The shock absorption technology is used for the damping layer.The results show that under the action of earthquake,the fault rupture dislocation has greater influence scope and degree on the upper part of the tunnel than on the lower part of the tunnel.The plate part is the focus of the earthquake resistance design.The damping effects of 10 cm thick-shock absorption layer of the tunnel are obviously better than those of 5 cm thick and 15 cm thick shock absorption layers.The 10 cm thick shock absorption layer is thus recommended.The research results may provide the technical support for improving the anti-seismic performance of tunnels across dangerous mountains with stick-slip fracture.

关 键 词：隧道 高烈度地震区 黏滑断层 减震层 模型试验 

分 类 号：TU470.3[建筑科学—结构工程] U45[建筑科学—土工工程]