山岭隧道地震反应的几个特性  

Several Characteristics of Seismic Response of Mountain-crossing Tunnels

作　　者：严细水[1] 朱汉华 王迎超[1] 

机构地区：[1]浙江大学土木工程系,杭州310058 [2]浙江省公路管理局,杭州310009

出　　处：《隧道建设》2009年第4期420-423,共4页Tunnel Construction

摘　　要：通过对山岭隧道的有限元动力计算,总结山岭隧道地震反应的一些特性。深埋隧道比浅埋隧道的动力响应小;洞口偏压明显的隧道,其偏压侧的动力响应明显比非偏压侧大,并且最大动力响应出现于隧道拱腰;而洞口偏压不太明显的隧道,其偏压侧的动力响应比非偏压侧稍微大一点,最大动力响应出现于隧道拱顶;另外隧道围岩的弹性模量对隧道的动力影响非常明显。On basis of calculation of dynamics mountain tunnels by finite element method, the authors summarize several characteristics of seismic response of mountain-crossing tunnels in this paper. The dynamic responses of deep-buried tunnels are smaller than those of shallow-buried tunnels; The dynamic responses of high pressure side are stronger than those of the normal pressure side in case of tunnels with obvious unsymmetrical pressure at tunnel portals and the maximum dynamic responses occur at the hance ; The dynamic responses of high pressure side are a bit stronger than those of the normal pressure side in case of tunnel with unobvious unsymmetrical pressure at tunnel portals and the maximum dynamic responses occur at the vault. In addition, the elastic modulus of surrounding rock has obvious influence on the dynamic effect of tunnels.

关 键 词：山岭隧道 偏压 地震 动力响应 

分 类 号：TU435[建筑科学—岩土工程] U422.5[建筑科学—土工工程]