高速铁路车站抗震计算的多维反应谱组合法
详细信息 本馆镜像全文    |  推荐本文 | | 获取馆网全文
摘要
采用ANSYS软件分析天津西站Ⅱ区的结构特征,在传统随机振动算法中引入位移反应谱,结合水平向和竖向互功率谱表达形式的合理修正方法、沿结构整体坐标系方向功率谱、位移反应谱和传统三维平稳随机振动计算方法,提出用于高速铁路车站抗震计算的多维反应谱组合方法,并将多维反应谱组合方法的计算结果与时程响应分析和规范算法的计算结果进行比较。结果表明:高速铁路车站结构的异向振型间的相关性较强,地震动输入角度对结构响应的影响显著,而规范算法忽略了异向地震激励的相关性,不能反映地震动输入角度对结构响应的影响;多维反应谱组合法由于合理考虑了异向地震激励输入角度的变化、异向振型和地震激励的相关性,因此其计算结果与时程响应分析的结果吻合,更适用于高速铁路车站的抗震计算。
The structural characteristics of the second section of Tianjin West Railway Station were analyzed using ANSYS software and the displacement response spectrum was introduced into the traditional random vibration algorithm.The combination method of multidimensional response spectrum was deduced based on the rational modified expression of cross power spectrum between horizontal and vertical directions,the matrix of power spectrum along structural coordinates,displacement response spectrum and the traditional three-dimensional stationary random vibration calculation method.The comparisons of structural response obtained from the combination method,the time-history analysis method and the code method were conducted.The results showed that strong correlation existed in the vibration modes with different directions of high speed railway station structures.The influence of the seismic input angle on structural response was significant.But the code method neglected the correlation of the seismic excitations with different directions and could not reflect the influence of seismic input angle on structural response.The result obtained from the combination method of multidimensional response spectrum agreed well with that from time-history analysis method and the combination method was more suitable for the seismic calculation of high speed railway station for reasonably considering the changes of seismic input angle of the seismic excitations with different directions as well as the correlation of the vibration modes with different directions and seismic excitations.
引文
[1]顾博.基于IDA和MPA方法的“站桥合一”车站框架结构抗震性能研究[D].北京:北京交通大学,2011.(GU Bo.Seismic Performance Research of“Integral Station-Bridge”Frame Structures Based on IDA and MPA Methods[D].Beijing:Beijing Jiaotong University,2011.in Chinese)
    [2]铁道第三勘察设计院集团有限公司.高速铁路天津西站站房工程站房结构设计汇报[R].天津:铁道第三勘察设计院集团有限公司,2009.(The Third Railway Survey and Design Institute Group Corporation.The Structural Design Report of West Tianjin High Speed Railway Station[R].Tianjin:The Third Railway Survey and Design Institute Group Corporation,2009.in Chinese)
    [3]王轶,张力,甄伟.站桥合一的大型客站站房结构抗震性能研究[J].建筑结构,2009,39(12):23-27.(WANG Yi,ZHANG Li,ZHEN Wei.Study on Seismic Behavior of Bridge-Station Combined Railway Station[J].Building Structure,2009,39(12):23-27.in Chinese)
    [4]中华人民共和国住房与城乡建设部.GB 50011—2010建筑抗震设计规范[S].北京:中国建筑工业出版社,2010.
    [5]秦权,王飞.关于改进我国大跨缆索支承桥抗震设计的意见[J].中国铁道科学,2002,23(5):73-81.(QIN Quan,WANG Fei.Comments on Improvement in Seismic Design of Long-Span Cable-Stayed Bridge in China[J].China Railway Science,2002,23(5):73-81.In Chinese)
    [6]李宏男.结构多维抗震理论[M].北京:科学出版社,2006.(LI Hongnan.Theory of Structure Response under Multi Earthquake Excitation[M].Beijing:Science Press,2006.in Chinese)
    [7]MENUN C,KIUREGHIAN A D.A Replacement for the 30%,40%and SRSS Rules for Multi-Component Seismic Analysis[J].Earthquake Spectra,1998,14(1):153-163.
    [8]布占宇,谢旭.不同阻尼计算模式对斜拉桥地震响应分析的影响[J].中国铁道科学,2006,27(2):46-51.(BU Zhanyu,XIE Xu.Effects of Different Damping Modes on the Seismic Response of Cable-Stayed Bridges[J].China Railway Sciense,2006,27(2):46-51.In Chinese)
    [9]克拉夫R,彭津J.结构动力学[M].北京:高等教育出版社,2006.(CLOUGH Ray,PENZIEN Joseph.Dynamics of Structures[M].Beijing:Higher Education Press,2006.in Chinese)
    [10]黄玉平,刘季.双向水平地震动的空间相关性[J].哈尔滨建筑工程学院学报,1987(3):10-14.(HUANG Yuping,LIU Ji.The Spatial Correlation of Two Horizontal Direction Earthquake[J].Journal of Harbin University of Civil Engineering and Architecture,1987(3):10-14.in Chinese)
    [11]曹资,薛素铎.空间结构抗震理论与设计[M].北京:科学出版社,2005.
    [12]林家浩,张亚辉.随机振动的虚拟激励法[M].北京:科学出版社,2006.

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