山岭隧道地震反应的几个特性
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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.
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.
引文
[1]周德培.强震区隧道洞口段的动力特性研究[J].地震工程与工程振动,1998,18(1):124-130.
[2]李德武,高峰.隧道洞口段三维地震反应分析[J].兰州铁道学院学报,1998,17(2):1-5.
[3]高峰,石玉成,严松宏,等.隧道洞口段的抗震设防长度[J].中国公路学报,2006,19(3):65-69.
[4]李育枢.山岭隧道地震动力响应及减震措施研究[D].上海:同济大学博士学位论文,2005.
[5]GB 50111—2006铁路工程抗震设计规范[S].北京:中国计划出版社,2006.
[6]JTGD 70—2004公路隧道设计规范[S].北京:人民交通出版社,2004.
[7]胡聿贤.地震工程学[M].2版.北京:地震出版社,2006.
[8]潘昌实.隧道及地下结构物抗震问题的研究概况[J].世界隧道,1996(5):7-16.
[9]徐文焕.地下结构抗震分析中若干问题的探讨[J].西南交通大学学报,1993,3(3):1-6.
[10]李海波,朱莅,吕涛,等.考虑地震动空间非一致性的岩体地下洞室群地震反应分析[J].岩石力学与工程学报,2008,27(9):1757-1766.
[2]李德武,高峰.隧道洞口段三维地震反应分析[J].兰州铁道学院学报,1998,17(2):1-5.
[3]高峰,石玉成,严松宏,等.隧道洞口段的抗震设防长度[J].中国公路学报,2006,19(3):65-69.
[4]李育枢.山岭隧道地震动力响应及减震措施研究[D].上海:同济大学博士学位论文,2005.
[5]GB 50111—2006铁路工程抗震设计规范[S].北京:中国计划出版社,2006.
[6]JTGD 70—2004公路隧道设计规范[S].北京:人民交通出版社,2004.
[7]胡聿贤.地震工程学[M].2版.北京:地震出版社,2006.
[8]潘昌实.隧道及地下结构物抗震问题的研究概况[J].世界隧道,1996(5):7-16.
[9]徐文焕.地下结构抗震分析中若干问题的探讨[J].西南交通大学学报,1993,3(3):1-6.
[10]李海波,朱莅,吕涛,等.考虑地震动空间非一致性的岩体地下洞室群地震反应分析[J].岩石力学与工程学报,2008,27(9):1757-1766.
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