随机结构的平稳随机地震响应
详细信息 本馆镜像全文    |  推荐本文 | | 获取馆网全文
摘要
基于摄动理论,考虑地面运动的相位差,推导了大跨度随机结构在平稳随机地震作用下位移响应的零阶、一阶功率谱密度函数计算公式.算例表明,对大跨度随机结构考虑地震输入相位差的影响十分必要.
Based on the perturbation theory, the paper induces the Zero and First order expressions of power spectral density matrices of the displacements of stochastic structures with the ground motion phase lags taking into account. The numerical example has been given. This paper shows that it is very necessary to take the ground motion phase lags into account for longspan stochastic structures. 
引文
[1] HartGC,ConinsJD.Thetreatmentofrandomnessinfiniteelementmodeling[J].SAEShockandVibrationsSymp.,Sec.ofAutomotiveEngrs.,1970,2509-2519.
    [2] 秦 权.随机有限元及其进展[J].工程力学,1994,4(11):1-10.
    [3] 李 杰.随机结构系统[M].北京:科学出版社,1996.
    [4] LiuWK,BeltschkoT.MainiA.Probabilisticfiniteelementmethodsfornonlinearstructuraldynamics[J].Comput.MethodsAppl.Mech.Eng.,1986,56,61-81.
    [5] SunTC.Afiniteelementmethodforrandomdifferentialequationswithrandomcoefficients[J].SIAM,J.Numer.Anal.1979,16(6):1019-1035.
    [6] GhanemRG,SpanosY.Polynomialchaosinstochasticfiniteelement[J].J.ofAppl.Mech.,1990,57,197-202.
    [7] JensenH,IwanWD.Responsevariabilityinstructuraldynamics[J].EarthquakeEngineeringandStructuralDynamics,1992,20,949-959.
    [8] 林家浩.大跨度结构的随机地震响应[J].固体力学学报,1991,(6):319-328.
    [9] 张湘伟.结构分析中的概率方法[M].北京:科学出版社,2000.
    [10] 克拉夫RW.结构动力学[M].王光远等译.北京:科学出版社,1981.
    [11] 李国豪.工程抗震动力学[M].上海:上海科技出版社,1984.
    [12] 刘次华.随机过程[M].武汉:华中科技大学出版社,1999.

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