随机结构非线性地震反应仿真分析

英文篇名：SIMULATION ON THE EARTHQUAKE NONLINEAR RESPONSE FOR STOCHASTIC STRUCTURES
中文刊名：土木工程学报
作者：李杰 ; 丁光莹
英文作者：Li Jie Ding Guangying (Tongji University)
中文关键词：随机结构 ; 非线性仿真分析 ; 分层抽样技术 ; 二重随机模拟 ; 动力分析
英文关键词：stochastic structure ; simulation non-linear analysis ; stratified sampling technique ; duplicate stochastic simulation ; dynamic analysis
出版日期：2003-02-28
机构：同济大学 ,同济大学
年：2003
期：02
出版单位：土木工程学报

摘要

利用仿真技术分析研究了具有随机本构参数的混凝土框架结构的地震反应 ,提出二重随机模拟的概念 ,建议了一类随机结构非线性随机模拟算法。研究结果表明 :当考虑混凝土本构关系的固有离散性时 ,混凝土结构的地震响应会出现大幅度的随机涨落行为。这种随机涨落对于结构的内力分布具有显著影响 ,进而导致结构塑性铰分布的不可精确预测特征。对于复杂结构的分析 ,应注意混凝土材料本构关系随机性的影响。
The simulation on the earthquake nonlinear response for stochastic structures is studied in the paper.A concept on duplicate random simulation is put forward.It means that the samples of stochastic structures are built in two stages.At the same time,a kind of algorithm for stochastic non-linear simulation of structures is proposed.A reinforced concrete frame structure with three spans and eight stories is analyzed.It is used to demonstrate the effects of random parameters on the constitutive curves of concrete.The effects show that the earthquake response of the structure behaves great variation.

引文

[1]　ShinozukaM ,Deodatis,G .Responsevariabilityofstochasticfinitesystem.JournalofEngineeringMechanics,ASCE ,1988,114(3),499～519
    [2]　Elishiakoff,I .Ren,Y .J .M .Shinozuka.Variationalprin ciplesdevelopedforandappliedtoanalysisofstochasticbeams.J .EngngMech.,ASCE ,1996,122(6)
    [3]　Liu,P .L .,DerKiureghian,A .Finiteelementreliabilityofgeometricallynon-linearuncertainstructures.JournalofEngi neeringMechanics,117(8),1806～1825
    [4]　GrundmannH ,Waubke.H .Non-linearstochasticdynamicsofsystemswithrandomproperties:aspectralapproachcombinedwithstatisticallinearization.Int.J .NonlinearMechanics,1996,31(5).619～630
    [5]　WilfredD ,Iwan,Ching-TungHuang.Onthedynamicre sponseofnon-linearwithparameteruncertainties.Int.J .NonlinearMechanics,1996,31(5)631～645
    [6]　李杰.随机结构系统———分析与建模[M]北京:科学出版社,1996
    [7]　李杰,张其云.混凝土随机损伤本构关系研究[J].同济大学学报,2001,29(10)1135～1141
    [8]　丁光莹.钢筋混凝土框架结构非线性反应的随机模拟分析[D]上海:同济大学,2001
    [9]　R .ParkandP .Paulay,Reinforcedconcretestructures,Johnwilpy&sons1975
    [10]　茆诗松,王静龙,濮晓龙.高等统计分析[M ].高等教育出版社与施普林格出版社,1998