爆破地震波作用下隧道衬砌结构动力响应研究  

Dynamic Response Study of Tunnel Lining Structure under Blasting Seismic Wave Action

作　　者：方兴[1] 李天斌[1] 孟陆波[1] 徐华[2] 

机构地区：[1]成都理工大学地质灾害防治与地质环境保护国家重点实验室,成都610059 [2]西南交通大学土木工程学院,成都610031

出　　处：《北方交通》2011年第2期93-96,共4页Northern Communications

摘　　要：以地表爆破为振动源,通过控制不同的炸药量和爆心距来模拟不同强度的地震波,并利用工程地震仪实测振动源附近的隧道衬砌结构的动力响应,通过滤波和分离处理得到代表性的速度时程曲线;通过建立数值模型并加载监测到的速度时程曲线,以此来模拟爆破地震波对隧道衬砌不同断面不同部位的动力作用,并来探讨爆破地震对邻近隧道的影响范围和作用方式。Taking the surface blasting as vibration source,controlling the explosive charge and explosion center distance to imitate the seismic waves with different strength and measuring the dynamic response of tunnel lining structure near vibration source by engineering seismograph,the typical speed-time curve is achieved through filtering and separation treatment;establishing the numerical model and loading the monitored speed-time curve to imitate the dynamic action of seismic wave at explosion site to different parts at different sections of tunnel lining and to discuss the influence area and action way of explosion earthquake to tunnel nearby.

关 键 词：爆破 地震波 隧道 衬砌 动力响应 

分 类 号：U455.91[建筑科学—桥梁与隧道工程]