防灾减灾工程学报2013，Vol.33Issue(3)：269-274,289,7.
穿风化槽山岭隧道地震响应分析
Analysis of Seismic Responses of Mountain Tunnels Passing through Weathered Ditch
摘要
Abstract
To investigate the influence laws of seismic excitation on tunnel structures passing through a weathered ditch,a three-dimensional elastoplastic numerical simulation model is established and a time history nonlinear analysis is performed.Then a parametric study is conducted to compare the peak values of dynamic responses of liners under different conditions of the properties of the weathered ditch.And the influence of angle between the weathered ditch and the tunnel transection on the seismic responses of tunnel structures is investigated.Finally,the effects of property of grouting layer and secondary liner on the peak values of structure internal forces are studied.The results show that increasing the ditch angle is helpful in reducing the displacement of ground.The peak values of internal forces of secondary liner can be minimized by setting the ditch angle to a certain value.The internal force of liners increases as the modulus of the weathered ditch increases.The increasing modulus of grouting layer to some extent diminishes the internal force of liners.When the modulus of secondary liner increases,both the peak values and amplitude of fluctuation of internal force increase.关键词
山岭隧道/风化槽/地震响应/有限元计算模型Key words
mountain tunnel/ weathered ditch/ seismic response/ finite element model分类
交通工程引用本文复制引用
潘玉涛,郑俊杰,章荣军,申俊敏..穿风化槽山岭隧道地震响应分析[J].防灾减灾工程学报,2013,33(3):269-274,289,7.基金项目
新世纪优秀人才支持计划项目(NCET-06-649)、山西交通建设科技项目(10-2-13)资助 （NCET-06-649）
