地震系数法隧道上覆土柱的合理计算高度
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摘要
在隧道埋深较大时,地震系数法由于夸大了隧道上覆土柱地震惯性力的影响,与实际工程和震害现象严重不符。因此,要提高现有地震系数法的适应性,迫切需要对地震系数法进行修正。首先依据地震系数法进行抗震计算,分析其局限性;并在Ⅴ级围岩条件下,分别采用地震系数法﹑反应位移法和时程分析法,对不同跨度的洞室进行抗震计算,最终得出Ⅴ级围岩条件、不同跨度下地震系数法的上覆土柱合理计算高度,研究成果可供隧道工程抗震计算参考。
The earthquake coefficient method is used for aseismatic calculation of tunnel in traffic tunnel specification in our country,but the method is not in accordance with the practical engineering and seismic damage when tunnel is buried very deep,because the inertia force of overlaying soil is overestimated.In order to improve the adaptability of earthquake coefficient method,it is necessary to modify it.In this paper,the aseismatic calculation based on earthquake coefficient method is carried out,and the limitation of the method is analyzed.Then earthquake coefficient method,response displacement method,and dynamic analysis method are applied to tunnels' aseismatic calculation in V class surrounding rock at different widths of the cavity.Finally,the advisable calculation heights of tunnel overlaying soil with earthquake coefficient method in V class surrounding rock is presented,which can be referenced in aseismatic calculation of tunnel engineering.
The earthquake coefficient method is used for aseismatic calculation of tunnel in traffic tunnel specification in our country,but the method is not in accordance with the practical engineering and seismic damage when tunnel is buried very deep,because the inertia force of overlaying soil is overestimated.In order to improve the adaptability of earthquake coefficient method,it is necessary to modify it.In this paper,the aseismatic calculation based on earthquake coefficient method is carried out,and the limitation of the method is analyzed.Then earthquake coefficient method,response displacement method,and dynamic analysis method are applied to tunnels' aseismatic calculation in V class surrounding rock at different widths of the cavity.Finally,the advisable calculation heights of tunnel overlaying soil with earthquake coefficient method in V class surrounding rock is presented,which can be referenced in aseismatic calculation of tunnel engineering.
引文
[1]钱七虎,何川,晏启祥.隧道工程动力响应特性与汶川地震隧道震害分析及启示[C]∥中国岩石力学与工程学会.汶川大地震工程震害调查分析与研究论文集.北京:科学出版社,2009:633-643.
[2]中国人民共和国交通部.JTJ004-89公路工程抗震设计规范[S].北京:人民交通出版社,1989.
[3]刘晶波,李彬,谷音.地铁盾构隧道地震反应分析[J].清华大学学报:自然科学版,2005,45(6):757-760.LIU Jingbo,LI Bin,GU Yin.Seismic responseanalysis of shielded subway tunnels[J].Journal ofTsinghua University:Science and Technology,2005,45(6):757-760.
[4]郑永来,杨林德.地下结构震害与抗震对策[J].工程抗震,1999(4):23-28.ZHENG Yonglai,YANG Linde.Earthquake damageand resistant measure of underground structures[J].Earthquake Resistant Engineering,1999(4):23-28.
[5]黄先锋.地下结构的抗震计算:位移响应法[J].铁道建筑,1999(6):3-6.HUANG Xianfeng.Seismic calculation of undergroundstructure,the displacement response method[J].Railway Engineering,1999(6):3-6.
[6]边金,陶连金,张印涛,等.地下结构抗震设计方法的比较与分析[J].现代隧道技术,2008,45(6):50-55.BIAN Jin,TAO Lianjin,ZHANG Yintao,et al.Comparison and analysis of the aseismic design methodsfor underground structures[J].Modern TunnelingTechnology,2008,45(6):50-55.
[7]刘如山,胡少卿,石宏彬.地下结构抗震计算中拟静力法的地震荷载施加方法研究[J].岩土工程学报,2007,29(2):237-242.LIU Rushan,HU Shaoqing,SHI Hongbin.Study onseismic loading of pseudo-static approach used in theseismic design of underground structure[J].ChineseJournal of Geotechnical Engineering,2007,29(2):237-242.
[8]国家地震局.GB50267-97核电厂抗震设计规范[S].北京:中国计划出版社,1997.
[9]Kawamata K.Seismic design of underground structure[M].Tokyo:Kajima Press,1994.
[10]吕和林.一种用于浅埋隧道抗震分析的拟静力数值方法[J].西南交通大学学报,1999,34(3):315-319.LüHelin.A mimetic statics numeric method on earthquakeresistance analysis of shallow buried tunnels[J].Journal ofSouthwest Jiaotong University,1999,34(3):315-319.
[11]耿萍,何川,晏启祥.盾构隧道纵向地震响应分析[J].西南交通大学学报,2007,42(3):283-287.GENG Ping,HE Chuan,YAN Qixiang.Analysis oflongitudinal seismic response of shield tunnel[J].Journal of Southwest Jiaotong University,2007,42(3):283-287.
[12]庄海洋,陈国兴.软弱地基浅埋地铁区间隧洞的地震反应分析[J].岩石力学与工程学报,2005,24(14):2506-2512.ZHUANG Haiyang,CHEN Guoxing.Earthquakeresponse of shallow subway tunnels in soft foundation[J].Chinese Journal of Rock Mechanics and Engineering,2005,24(14):2506-2512.
[13]潘昌实.隧道及地下结构物抗震问题的研究概况[J].现代隧道技术,1996(5):7-16.PAN Changshi.Researches on aseismic besign oftunnels and underground structures[J].ModernTunnelling Technology,1996(5):7-16.
[2]中国人民共和国交通部.JTJ004-89公路工程抗震设计规范[S].北京:人民交通出版社,1989.
[3]刘晶波,李彬,谷音.地铁盾构隧道地震反应分析[J].清华大学学报:自然科学版,2005,45(6):757-760.LIU Jingbo,LI Bin,GU Yin.Seismic responseanalysis of shielded subway tunnels[J].Journal ofTsinghua University:Science and Technology,2005,45(6):757-760.
[4]郑永来,杨林德.地下结构震害与抗震对策[J].工程抗震,1999(4):23-28.ZHENG Yonglai,YANG Linde.Earthquake damageand resistant measure of underground structures[J].Earthquake Resistant Engineering,1999(4):23-28.
[5]黄先锋.地下结构的抗震计算:位移响应法[J].铁道建筑,1999(6):3-6.HUANG Xianfeng.Seismic calculation of undergroundstructure,the displacement response method[J].Railway Engineering,1999(6):3-6.
[6]边金,陶连金,张印涛,等.地下结构抗震设计方法的比较与分析[J].现代隧道技术,2008,45(6):50-55.BIAN Jin,TAO Lianjin,ZHANG Yintao,et al.Comparison and analysis of the aseismic design methodsfor underground structures[J].Modern TunnelingTechnology,2008,45(6):50-55.
[7]刘如山,胡少卿,石宏彬.地下结构抗震计算中拟静力法的地震荷载施加方法研究[J].岩土工程学报,2007,29(2):237-242.LIU Rushan,HU Shaoqing,SHI Hongbin.Study onseismic loading of pseudo-static approach used in theseismic design of underground structure[J].ChineseJournal of Geotechnical Engineering,2007,29(2):237-242.
[8]国家地震局.GB50267-97核电厂抗震设计规范[S].北京:中国计划出版社,1997.
[9]Kawamata K.Seismic design of underground structure[M].Tokyo:Kajima Press,1994.
[10]吕和林.一种用于浅埋隧道抗震分析的拟静力数值方法[J].西南交通大学学报,1999,34(3):315-319.LüHelin.A mimetic statics numeric method on earthquakeresistance analysis of shallow buried tunnels[J].Journal ofSouthwest Jiaotong University,1999,34(3):315-319.
[11]耿萍,何川,晏启祥.盾构隧道纵向地震响应分析[J].西南交通大学学报,2007,42(3):283-287.GENG Ping,HE Chuan,YAN Qixiang.Analysis oflongitudinal seismic response of shield tunnel[J].Journal of Southwest Jiaotong University,2007,42(3):283-287.
[12]庄海洋,陈国兴.软弱地基浅埋地铁区间隧洞的地震反应分析[J].岩石力学与工程学报,2005,24(14):2506-2512.ZHUANG Haiyang,CHEN Guoxing.Earthquakeresponse of shallow subway tunnels in soft foundation[J].Chinese Journal of Rock Mechanics and Engineering,2005,24(14):2506-2512.
[13]潘昌实.隧道及地下结构物抗震问题的研究概况[J].现代隧道技术,1996(5):7-16.PAN Changshi.Researches on aseismic besign oftunnels and underground structures[J].ModernTunnelling Technology,1996(5):7-16.
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