地下框架结构抗震性能评价方法的研究
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摘要
目前关于地下结构地震响应的分析大多是计算给定的地下结构在给定地震动下的动力响应,而该结构在该动力响应下是否已破坏则不得而知,这就需进行地下结构抗震性能评价方法的研究。首先总结了目前国内外在地下框架结构破坏评价方法方面的研究,在此基础上,结合《建筑抗震设计规范》,提出了新的评价方法:基于层间位移角的构件变形能力评价和基于有效应力值的构件强度评价。然后,以地铁车站及地下人防工程等地下框架结构为例,建立其三维分析模型,计算其三维地震响应,主要包括结构的水平横向相对位移和结构受力,对地下框架结构抗震性能进行评价。分析表明:所提出的评价方法能初步应用于地下框架结构的抗震性能评价,但仍需进一步完善。研究成果和思路可为《建筑抗震设计规范》中地下建筑结构部分的补充和完善提供有益的帮助。
The study on seismic responses of underground structures is focusing on the specific structure under a given earthquake,and the safety of the structure is not known under the seismic responses.Therefore,much attention should be paid to the evaluation method for underground frame structures during earthquake.The researches on the evaluation methods for underground structures are summarized.A new evaluation method is presented based on the former research results and Chinese code for seismic design of buildings.The story drift angle is adopted to evaluate the deformability of structural components,and the effective stress value is employed to evaluate the strength of structural components in the method.Then,three-dimensional analysis models for underground frame structures,such as subway stations and civil defense engineering,are established and the seismic responses are calculated,including horizontal relative displacement and inner forces of structures.The seismic behaviors of these underground structures are evaluated.It can be seen from the analysis that the proposed evaluation method can be used to evaluate the seismic behaviors of underground frame structures,whereas it needs to be improved.The research results and approach are helpful for the supplementation and perfection of underground structures in Chinese code for seismic design of buildings.
The study on seismic responses of underground structures is focusing on the specific structure under a given earthquake,and the safety of the structure is not known under the seismic responses.Therefore,much attention should be paid to the evaluation method for underground frame structures during earthquake.The researches on the evaluation methods for underground structures are summarized.A new evaluation method is presented based on the former research results and Chinese code for seismic design of buildings.The story drift angle is adopted to evaluate the deformability of structural components,and the effective stress value is employed to evaluate the strength of structural components in the method.Then,three-dimensional analysis models for underground frame structures,such as subway stations and civil defense engineering,are established and the seismic responses are calculated,including horizontal relative displacement and inner forces of structures.The seismic behaviors of these underground structures are evaluated.It can be seen from the analysis that the proposed evaluation method can be used to evaluate the seismic behaviors of underground frame structures,whereas it needs to be improved.The research results and approach are helpful for the supplementation and perfection of underground structures in Chinese code for seismic design of buildings.
引文
[1]杨林德.上海地铁车站抗震设计方法研究[R].上海:同济大学,2002.(YANG Lin-de.The research of seismic designmethod for subway station in Shanghai[R].Shanghai:TongjiUniversity,2002.(in Chinese))
[2]CHE A,IWATATE T.Shaking table test and numericalsimulation of seismic response of subway structures[J].Structures and Materials,2002,11:367–376.
[3]杨林德,王国波,郑永来,等.地铁车站结构振动台模型试验及地震响应的三位数值模拟[J].岩土工程学报,2007,29(12):1892–1898.(YANG Lin-de,WANG Guo-bo,ZHENG Yong-lai,et al.Shaking table tests on subway stationjoint structures and 3D numerical simulation of seismicresponse[J].Chinese Journal of Geotechnical Engineering,2007,29(12):1892–1898.(in Chinese))
[4]HUO H,BOBET A,FERNáNDEZ G,et al.Load transfermechanisms between underground structure and surroundingground:evaluation of the failure of the Daikai station[J].Journal of Geotechnical and Geoenvironmental Engineering,2005,131(12):1522–1533.
[5]SAMATA S,OHUCHI H and MATSUDA T.A study of thedamage of subway structures during the 1995 Hanshin-Awajiearthquake[J].Cement and Concrete Composites,1997,19(3):223–239.
[6]GB50011—2010建筑抗震设计规范[S].2010.(GB50011—2010 Code for seismic design of buildings[S].2010.(inChinese))
[7]马险峰.地下结构的震害研究[D].上海:同济大学,2000.(MA Xian-feng.The earthquake disaster research forunderground structures[D].Shanghai:Tongji University,2000.(in Chinese))
[8]GB50157—2003地铁设计规范[S].2003.(GB50157—2003Code for design of metro[S].2003.(in Chinese))
[9]GB50010—2002混凝土结构设计规范[S].2002.(GB50010—2002 Code for design of concrete structures[S].2002.(inChinese))
[10]王国波.软土地铁车站结构三维地震响应计算理论与方法研究[D].上海:同济大学,2007.(WANG Guo-bo.Thestudy of calculation theory and method of three dimensionalseismic response of subway station structures in soft soil[D].Shanghai:Tongji University,2007.(in Chinese))
[11]Itasca Consulting Group.Fast lagrangian analysis of continuain 3 dimensions[R].Minneapolis:Itasca Consulting Group,Inc,2002.
[12]刘齐建.软土地铁建筑结构抗震设计计算理论的研究[D].上海:同济大学,2005.(LIU Qi-jian.Study on seismicdesign and analysis theory for subway structures in softsoil[D].Shanghai:Tongji University,2005.(in Chinese))
[13]孔戈.盾构隧道地震响应分析及抗减震措施研究[D].上海:同济大学,2007.(KONG Ge.Study on responseanalysi and shock absorption measures of shield tunnel[D].Shanghai:Tongji University,2007.(in Chinese))
[14]GB50413—2007城市抗震防灾规划标准[S].2007.(GB50413—2007 Standard for urban planning on earthquakeresistance and hazardous prevention[S].2007.(in Chinese))
[2]CHE A,IWATATE T.Shaking table test and numericalsimulation of seismic response of subway structures[J].Structures and Materials,2002,11:367–376.
[3]杨林德,王国波,郑永来,等.地铁车站结构振动台模型试验及地震响应的三位数值模拟[J].岩土工程学报,2007,29(12):1892–1898.(YANG Lin-de,WANG Guo-bo,ZHENG Yong-lai,et al.Shaking table tests on subway stationjoint structures and 3D numerical simulation of seismicresponse[J].Chinese Journal of Geotechnical Engineering,2007,29(12):1892–1898.(in Chinese))
[4]HUO H,BOBET A,FERNáNDEZ G,et al.Load transfermechanisms between underground structure and surroundingground:evaluation of the failure of the Daikai station[J].Journal of Geotechnical and Geoenvironmental Engineering,2005,131(12):1522–1533.
[5]SAMATA S,OHUCHI H and MATSUDA T.A study of thedamage of subway structures during the 1995 Hanshin-Awajiearthquake[J].Cement and Concrete Composites,1997,19(3):223–239.
[6]GB50011—2010建筑抗震设计规范[S].2010.(GB50011—2010 Code for seismic design of buildings[S].2010.(inChinese))
[7]马险峰.地下结构的震害研究[D].上海:同济大学,2000.(MA Xian-feng.The earthquake disaster research forunderground structures[D].Shanghai:Tongji University,2000.(in Chinese))
[8]GB50157—2003地铁设计规范[S].2003.(GB50157—2003Code for design of metro[S].2003.(in Chinese))
[9]GB50010—2002混凝土结构设计规范[S].2002.(GB50010—2002 Code for design of concrete structures[S].2002.(inChinese))
[10]王国波.软土地铁车站结构三维地震响应计算理论与方法研究[D].上海:同济大学,2007.(WANG Guo-bo.Thestudy of calculation theory and method of three dimensionalseismic response of subway station structures in soft soil[D].Shanghai:Tongji University,2007.(in Chinese))
[11]Itasca Consulting Group.Fast lagrangian analysis of continuain 3 dimensions[R].Minneapolis:Itasca Consulting Group,Inc,2002.
[12]刘齐建.软土地铁建筑结构抗震设计计算理论的研究[D].上海:同济大学,2005.(LIU Qi-jian.Study on seismicdesign and analysis theory for subway structures in softsoil[D].Shanghai:Tongji University,2005.(in Chinese))
[13]孔戈.盾构隧道地震响应分析及抗减震措施研究[D].上海:同济大学,2007.(KONG Ge.Study on responseanalysi and shock absorption measures of shield tunnel[D].Shanghai:Tongji University,2007.(in Chinese))
[14]GB50413—2007城市抗震防灾规划标准[S].2007.(GB50413—2007 Standard for urban planning on earthquakeresistance and hazardous prevention[S].2007.(in Chinese))
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