软土地区地铁车站横断面抗震设计方法适用性研究
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摘要
结合工程设计人员的实际需求,针对上海地区《地下铁道建筑结构抗震设计规范》(DG/TJ 08-2064—2009)中列出的可供选用的四种抗震设计方法进行了详细介绍,重点对比了这些方法与其他同类型方法在计算模型、参数确定方面的不同。并结合实际工程案例,选取三种典型的地铁车站结构横断面形式进行了四种抗震设计方法对比验算,讨论了四种抗震设计方法的适用性。结果表明,惯性力法适用于强度验算,不适用于变形验算;等代水平加速度法的计算结果偏大;反应位移法适用于横断面规则的地铁车站结构的抗震设计验算;地层-结构动力时程分析法的计算结果准确且工作量不大,但其使用范围受限于动力有限元计算方法的普及程度以及该法对于计算机硬件的较高要求。
Four available seismic design methods listed in Shanghai code of Structural seismic design code of underground railway construction( DG / TJ 08-2064—2009) were specially introduced in details according to practical requirements of designers. The differences of calculation model and determination of parameters were compared emphatically in these four methods and others. Three typical cross section styles of subway station from actual project cases were chosen to discuss the feasibility of four methods through calculation and comparison. The results show that inertial force method is suitable for strength calculation but not for deformation calculation. Equivalent horizontal acceleration method has a larger calculation result. Response deformation method is suitable for calculating stations that cross section form is regularly arranged in longitude. Formation-structural time-history analysis method is precise and time-saving,but is restricted by popularity of dynamic finite element calculation method and requirement for computers.
Four available seismic design methods listed in Shanghai code of Structural seismic design code of underground railway construction( DG / TJ 08-2064—2009) were specially introduced in details according to practical requirements of designers. The differences of calculation model and determination of parameters were compared emphatically in these four methods and others. Three typical cross section styles of subway station from actual project cases were chosen to discuss the feasibility of four methods through calculation and comparison. The results show that inertial force method is suitable for strength calculation but not for deformation calculation. Equivalent horizontal acceleration method has a larger calculation result. Response deformation method is suitable for calculating stations that cross section form is regularly arranged in longitude. Formation-structural time-history analysis method is precise and time-saving,but is restricted by popularity of dynamic finite element calculation method and requirement for computers.
引文
[1]刘晶波,王文晖,赵冬冬.地下结构横截面抗震设计分析方法综述[J].施工技术,2010,39(6):91-95.
[2]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.
[3]袁勇,禹海涛,陈之毅.软土浅埋框架结构抗震计算方法评价[J].振动与冲击,2009,28(8):50-56.
[4]DGTJ 08-2064—2009地下铁道建筑结构抗震设计规范[S].上海:上海市城乡建设和交通委员会,2009.
[5]商金华,杨林德.软土场地地铁车站抗震计算的等代地震加速度法[J].华南地震,2010,30(1):6-15.
[6]禹海涛,袁勇,张中杰,等.反应位移法在复杂地下结构抗震中的应用[J].地下空间与工程学报,2011,7(5):857-862.
[7]刘晶波,王文晖,张小波,等.地下结构横断面地震反应分析的反应位移法研究[J].岩石力学与工程学报,2013,32(1):161-167.
[2]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.
[3]袁勇,禹海涛,陈之毅.软土浅埋框架结构抗震计算方法评价[J].振动与冲击,2009,28(8):50-56.
[4]DGTJ 08-2064—2009地下铁道建筑结构抗震设计规范[S].上海:上海市城乡建设和交通委员会,2009.
[5]商金华,杨林德.软土场地地铁车站抗震计算的等代地震加速度法[J].华南地震,2010,30(1):6-15.
[6]禹海涛,袁勇,张中杰,等.反应位移法在复杂地下结构抗震中的应用[J].地下空间与工程学报,2011,7(5):857-862.
[7]刘晶波,王文晖,张小波,等.地下结构横断面地震反应分析的反应位移法研究[J].岩石力学与工程学报,2013,32(1):161-167.
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