武汉火车站多点输入地震反应时程分析
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摘要
武汉火车站支撑结构东西向长度为258m(屋盖长度约300m),南北向长度为476m,南北向超长。对武汉站采用时程分析法,进行了考虑行波效应的多点输入地震反应分析。对多点输入与单点输入情况下的基底总剪力、扭转效应以及重要构件内力均进行了比较,讨论了不同视波速度对分析结果的影响。针对不同类型构件,给出了考虑多点输入影响的地震作用效应调整系数,并对这些构件进行了在多点输入地震组合工况下的截面验算,计算结果表明全部构件均满足规范要求,不必要因多点输入而采取特殊的构造措施。
The supporting structure of Wuhan railway station is super long in south to north direction,with dimension of 258m from east to west,and 476m from south to north.The time-history seismic analysis considering traveling effect is carried out.The base shear,torsion effect and internal force of important members between multi-support excitation and single-support excitation are compared.The corresponding analysis results under different traveling speed are discussed.The adjustive coefficients considering multi-support excitation based on different structure members are provided.The section check is made to these members in multi-support excitation earthquake load combinations.All members satisfy the requirement of code through the calculation mentioned above,no need to adopt extra measures because of multi-support excitation.
The supporting structure of Wuhan railway station is super long in south to north direction,with dimension of 258m from east to west,and 476m from south to north.The time-history seismic analysis considering traveling effect is carried out.The base shear,torsion effect and internal force of important members between multi-support excitation and single-support excitation are compared.The corresponding analysis results under different traveling speed are discussed.The adjustive coefficients considering multi-support excitation based on different structure members are provided.The section check is made to these members in multi-support excitation earthquake load combinations.All members satisfy the requirement of code through the calculation mentioned above,no need to adopt extra measures because of multi-support excitation.
引文
[1]刘枫,肖从真,徐自国,等.首都机场3号航站楼多维多点输入时程地震反应分析[J].建筑结构学报,2006,10(5).
[2]BOGDANOFF J L,GOLDBERG J E,SCHIFF A J.The effect of groundtransmission time on the response of long structures[J].Bull Seism SocAm,1965,55(1).
[3]潘旦光,楼梦麟,范立础.多点输入下大跨度结构地震反应分析研究现状[J].同济大学学报,2001,29(10).
[4]林家浩,张亚辉,赵岩.大跨度结构抗震分析方法及近期进展[J].力学进展,2001,31(3).
[5]胡世德,范立础.江阴长江公路大桥纵向地震反应分析[J].同济大学学报,1994,22(4).
[6]赵鹏飞,潘国华,汤荣伟,等.武汉火车站复杂大型钢结构体系研究[J].建筑结构,2009,39(1).
[2]BOGDANOFF J L,GOLDBERG J E,SCHIFF A J.The effect of groundtransmission time on the response of long structures[J].Bull Seism SocAm,1965,55(1).
[3]潘旦光,楼梦麟,范立础.多点输入下大跨度结构地震反应分析研究现状[J].同济大学学报,2001,29(10).
[4]林家浩,张亚辉,赵岩.大跨度结构抗震分析方法及近期进展[J].力学进展,2001,31(3).
[5]胡世德,范立础.江阴长江公路大桥纵向地震反应分析[J].同济大学学报,1994,22(4).
[6]赵鹏飞,潘国华,汤荣伟,等.武汉火车站复杂大型钢结构体系研究[J].建筑结构,2009,39(1).
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