设计参数对大跨屋盖结构自振频率的敏感度分析
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摘要
基于一较完善的大跨屋盖结构有限元模型,采用扰动法、拉丁超立方抽样(LHS)方法进行了多种设计参数对结构自振频率的敏感度分析,并进行了两种方法的比较.结果表明:两方法分析的6种设计参数对结构自振频率的影响规律基本一致.LHS方法考虑参数间的耦合,所得的分析结果较为真实,具有一定的参考价值.
Based on the baseline finite element model of a long-span roof,the perturbation method and Latin Hypercube Sampling(LHS) have been adopted for conducting sensitivity analysis of some key design parameters on natural frequency,and a comparison was made between these two methods.The analyzed results show that the impact law of six design parameters on natural frequency using these two methods are broadly consistent.Coupling between parameters was taken into account in LHS method,the analyzed results obtained from this method are more realistic and have some reference value.
Based on the baseline finite element model of a long-span roof,the perturbation method and Latin Hypercube Sampling(LHS) have been adopted for conducting sensitivity analysis of some key design parameters on natural frequency,and a comparison was made between these two methods.The analyzed results show that the impact law of six design parameters on natural frequency using these two methods are broadly consistent.Coupling between parameters was taken into account in LHS method,the analyzed results obtained from this method are more realistic and have some reference value.
引文
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[4]WANG Xiu-li,LI Xiao-fei,XUE Xiao-feng.Vibration characteristcs and seismic response analysis for radiant beam stringstructures[J].Spatial Structures,2010,16(1):24-288,1.(in Chinese)
[5]MCKAY M D,BECKMAN R J,CONOVER W J.Comparison of three methods for selecting values of input variables in theanalysis of output from a computer code[J].Technometrics,1979,21(2):239-245.
[6]BEVEN K J.Prophecy,reality and uncertainty in distributed hydrological modelling[J].Advances in Water Resources,1993,16(1):41-51.
[7]Van GRIENSVEN A,MEIXNER T,GRUNWALD S,et al.A global sensitivity analysis tool for the parameters of multi-vari-able catchment models[J].Journal of Hydrology,2006,324(1/4):10-23.
[8]SALTELLI A,TARANTOLA S,CHAN K P S.A quantitative model-independent method for global sensitivity analysis ofmodel output[J].Technometrics,19994,1(1):39-56.
[9]REN Qi-wei,CHEN Yang-bo,SHU Xiao-juan.Global sensitivity analysis of parameters of the Xin’anjiang model based onExtend FAST method[J].Acta Scientiarum Naturalium Universitatis Sunyatsen2,0104,9(3):127-134.(in Chinese)
[10]RAO Rui,WANG Rong-hui,ZHEN Xiao-xia.External uncertainty analysis and application for engineering creep[J].CivilConstructions and Environmental Engineering,2009,31(1):89-93.(in Chinese)
[11]LI Yan-qiang,DU Yan-liang.Dynamic finite element model updating of cable stayed based on the most sensitive design pa-rameters[J].Journal of Vibration and Shock,2009,28(3):141-142.(in Chinese)
[12]OLSSON A M J,SANDBERG G E.Latin hypercube sampling for stochastic finite element analysis[J].Journal of EngineeringMechanics2,002(1):121-124.
[13]RAO Rui.Study on creep effect for large-span concrete box girder bridge[D].Guangzhou:South China University of Tech-nology2,009:26-28.(in Chinese)
[2]刘毅,陈吉宁,杜鹏飞.环境模型参数识别与不确定性分析[J].环境科学,2002,23(6):6-10.
[3]张俊光,刘永健,姚晓荣,等.刚性悬索加劲钢桁梁桥结构参数敏感性分析[J].郑州大学学报:工学版,20103,1(5):55-59.
[4]王秀丽,李晓飞,薛晓峰.辐射式张弦梁结构自振特性和地震响应分析[J].空间结构,2010,16(1):24-28,81.
[9]任启伟,陈洋波,舒晓娟.基于Extend FAST方法的新安江模型参数全局敏感性分析[J].中山大学学报:自然科学版2,010 49(3):127-134.
[10]饶瑞,王荣辉,甄晓霞.工程中的徐变外部不确定性分析及应用[J].土木建筑与环境工程,2009,31(1):89-93.
[11]李延强,杜彦良.基于最敏感设计参数的斜拉索有限元动力模型修正[J].振动与冲击,20092,8(3):141-142.
[13]饶瑞.大跨度混凝土箱梁桥徐变效应研究[D].广州:华南理工大学,2009:26-28.
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