地震作用下层状土中地铁车站变形规律研究
|
摘要
采用FLAC有限差分软件,通过简化模型和土层,在输入唐山地震-北京旅馆测点南北向地震动时程情况下,研究了层状土中地铁车站变形规律;同时,将变形计算结果输入到地下结构的SAP模型,计算了结构的内力。以北京地铁16号线某车站为例,进行了地震响应数值模拟分析,研究表明:均匀土层中结构侧墙变形大于双层(上软下硬)土中侧墙变形;且不同土层中结构侧墙变形曲线斜率明显不同;存在软硬土层交界面时,结构侧墙位移随交界面深度呈线性增加;软硬土层交界面位于结构底板以下,即当车站结构处于同一种地层时,结构侧墙位移随着距离软硬交界面距离的增加而减小。
By using finite difference numerical analysis software FLAC,by simplifying the model and soil information,to input the Tangshan earthquake-Beijing hotel measuring point at north-south direction earthquake in dynamic time course the deformation of the subway station in layered soil is studied;simultaneously,the deformation calculation results are put into the SAP model to calculate the structural internal force.Taking a station of Beijing subway line 16 for example,the numerical simulations analysis of earthquake response was carried out.Studies show that the structure side wall deformation in homogeneous soil is obviously greater than that in double soil,and the sidewall deformation curve slope is significantly different in different soil layers.The structure sidewall displacement increases linearly with the interface depth when the hard and soft soil interface moves from roof to the floor.Hard and soft soil interface is located below the floor that is the station structure in the same soil layer,structure sidewall displacement is reduced with the increase of the distance from the hard and soft interface.
By using finite difference numerical analysis software FLAC,by simplifying the model and soil information,to input the Tangshan earthquake-Beijing hotel measuring point at north-south direction earthquake in dynamic time course the deformation of the subway station in layered soil is studied;simultaneously,the deformation calculation results are put into the SAP model to calculate the structural internal force.Taking a station of Beijing subway line 16 for example,the numerical simulations analysis of earthquake response was carried out.Studies show that the structure side wall deformation in homogeneous soil is obviously greater than that in double soil,and the sidewall deformation curve slope is significantly different in different soil layers.The structure sidewall displacement increases linearly with the interface depth when the hard and soft soil interface moves from roof to the floor.Hard and soft soil interface is located below the floor that is the station structure in the same soil layer,structure sidewall displacement is reduced with the increase of the distance from the hard and soft interface.
引文
[1]戚承志,张玉佳,常树,等.地铁结构抗震研究中的若干问题[J].北京建筑工程学院学报,2007,23(1):1-5.(Qi Chengzhi,Zhang Yujia,Chang Shu,et al.Severalproblems in aseismic study of subway structures[J].Journal of Beijing Institute of Civil Engineering and Ar-chitecture,2007,23(1):1-5.(in Chinese))
[2]周林聪,陈龙珠,宫必宁.地下结构地震模拟振动台试验研究[J].地下空间与工程学报,2005,1(2):182-213.(Zhou Lincong,Chen Longzhu,Gong Bining.Shaking table tests for the seismic simulation of under-ground structure[J].Chinese Journal of UndergroundSpace and Engineering,2005,1(2):182-213.(in Chi-nese))
[3]庄海洋,王修信,陈国兴.软土层埋深变化对地铁车站结构地震反应的影响规律研究[J].岩土工程学报,2009,31(8):1 258-1 266.(Zhuang Haiyang,WangXiuxin,Chen Guoxing.Earthquake responses of subwaystation with different depths of soft soil[J].ChineseJournal of Geotechnic al Engineering,2009,31(8):1 258-1 266.(in Chinese))
[4]边金,陶连金,王文沛,等.地铁车站结构邻近土体动应力振动台试验研究[J].地下空间与工程学报,2011,7(4):685-690.(Bian Jin,Tao Linjin,WangWenpei,et al.Shaking table test on dynamic soil stressof the subway station structure[J].Chinese Journal ofUnderground Space and Engineering,2011,7(4):685-690.(in Chinese))
[5]国胜兵,赵毅,赵跃堂,等.地下结构在竖向和水平地震荷载作用下的动力分析[J].地下空间与工程学报,2002,22(4):314-319.(Guo Shengbing,Zhao Yi,Zhao Yuetang.Dynamic analysis of underground struc-tures under the vertical and horizontal seismic load[J].Chinese Journal of Underground Space and Engineering,2002,22(4):314-319.(in Chinese))
[6]中华人民共和国行业标准.关于印发《市政公共设施抗震设防专项论证技术要点(地下工程篇)》的通知(建质[2011]13号)[S].北京:中华人民共和国住房和城乡建设部,2011.(People’s Republic of China in-dustry standards.The notice on the issue of the specialdemonstration of techniques for municipal public facili-ties earthquake(underground engineering review)[S].Beijing:People’s Republic of China Ministry of Housingand Urban-rural Development,2011.(in Chinese))
[7]杨阳,肖明.地下洞室动力计算模型合理截取范围研究[J].中国农村水利水电,2011,(1):111-114.(Yang Yang,Xiao Ming.Research on selecting rationalintercepted range of dynamic analysis Model[J].ChinaRural Water and Hydropower,2011,1:111-114.(inChinese))
[8]王文沛.浅埋地下结构地震反应分析及设计方法研究[D].北京:北京工业大学.(Wang Wenpei.Study onSeidmic Analysis and Design of Shallow UndergroundStructures[D].Beijing:Beijing University of Technolo-gy.(in Chinese))
[9]张波,陶连金,姜峰,等.地铁超近距交叉结构在水平地震荷载下的响应影响分析[J].铁道建筑,2011,(11):47-50.(Zhang Bo,Tao Lianjin,Jiang Feng,etal.Metro super close cross-structural responses underhorizontal earthquake load effects[J].Railway Engineer-ing,2011,(11):47-50.(in Chinese))
[10]陶连金,王文沛,张波,等.近断层地震动破裂向前方向性与滑冲效应对典型地铁车站结构动力响应的影响[J].地震工程与工程振动,2011,31(6):38-44.(Tao Lianjin,Wang Wenpei,Zahng Bo,et al.Effectsof repture forward directivity and fling step of near-faultground motions on dynamic responses of representativesubway station structure[J],Journal of Earthquark Engi-neering and Engineering Vibration,2011,31(6):38-44.(in Chinese)))
[2]周林聪,陈龙珠,宫必宁.地下结构地震模拟振动台试验研究[J].地下空间与工程学报,2005,1(2):182-213.(Zhou Lincong,Chen Longzhu,Gong Bining.Shaking table tests for the seismic simulation of under-ground structure[J].Chinese Journal of UndergroundSpace and Engineering,2005,1(2):182-213.(in Chi-nese))
[3]庄海洋,王修信,陈国兴.软土层埋深变化对地铁车站结构地震反应的影响规律研究[J].岩土工程学报,2009,31(8):1 258-1 266.(Zhuang Haiyang,WangXiuxin,Chen Guoxing.Earthquake responses of subwaystation with different depths of soft soil[J].ChineseJournal of Geotechnic al Engineering,2009,31(8):1 258-1 266.(in Chinese))
[4]边金,陶连金,王文沛,等.地铁车站结构邻近土体动应力振动台试验研究[J].地下空间与工程学报,2011,7(4):685-690.(Bian Jin,Tao Linjin,WangWenpei,et al.Shaking table test on dynamic soil stressof the subway station structure[J].Chinese Journal ofUnderground Space and Engineering,2011,7(4):685-690.(in Chinese))
[5]国胜兵,赵毅,赵跃堂,等.地下结构在竖向和水平地震荷载作用下的动力分析[J].地下空间与工程学报,2002,22(4):314-319.(Guo Shengbing,Zhao Yi,Zhao Yuetang.Dynamic analysis of underground struc-tures under the vertical and horizontal seismic load[J].Chinese Journal of Underground Space and Engineering,2002,22(4):314-319.(in Chinese))
[6]中华人民共和国行业标准.关于印发《市政公共设施抗震设防专项论证技术要点(地下工程篇)》的通知(建质[2011]13号)[S].北京:中华人民共和国住房和城乡建设部,2011.(People’s Republic of China in-dustry standards.The notice on the issue of the specialdemonstration of techniques for municipal public facili-ties earthquake(underground engineering review)[S].Beijing:People’s Republic of China Ministry of Housingand Urban-rural Development,2011.(in Chinese))
[7]杨阳,肖明.地下洞室动力计算模型合理截取范围研究[J].中国农村水利水电,2011,(1):111-114.(Yang Yang,Xiao Ming.Research on selecting rationalintercepted range of dynamic analysis Model[J].ChinaRural Water and Hydropower,2011,1:111-114.(inChinese))
[8]王文沛.浅埋地下结构地震反应分析及设计方法研究[D].北京:北京工业大学.(Wang Wenpei.Study onSeidmic Analysis and Design of Shallow UndergroundStructures[D].Beijing:Beijing University of Technolo-gy.(in Chinese))
[9]张波,陶连金,姜峰,等.地铁超近距交叉结构在水平地震荷载下的响应影响分析[J].铁道建筑,2011,(11):47-50.(Zhang Bo,Tao Lianjin,Jiang Feng,etal.Metro super close cross-structural responses underhorizontal earthquake load effects[J].Railway Engineer-ing,2011,(11):47-50.(in Chinese))
[10]陶连金,王文沛,张波,等.近断层地震动破裂向前方向性与滑冲效应对典型地铁车站结构动力响应的影响[J].地震工程与工程振动,2011,31(6):38-44.(Tao Lianjin,Wang Wenpei,Zahng Bo,et al.Effectsof repture forward directivity and fling step of near-faultground motions on dynamic responses of representativesubway station structure[J],Journal of Earthquark Engi-neering and Engineering Vibration,2011,31(6):38-44.(in Chinese)))
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心