基于设计参数灵敏度分析的模型修正方法研究  

Research on Model Correction Method Based on Sensitivity Analysis of Design Parameters

作　　者：张开银[1] 许灿 张斌[1] 方来文 ZHANG Kaiyin;XU Can;ZHANG Bin;FANG Laiwen(School of Transportation and Logistics Engineering,Wuhan University of Technology,Wuhan 430063,China;China Construction Third Bureau International Engineering Company,Wuhan 430071,China)

机构地区：[1]武汉理工大学交通与物流工程学院,武汉430063 [2]中建三局国际工程公司,武汉430071

出　　处：《武汉理工大学学报（交通科学与工程版）》2021年第6期1128-1132,共5页Journal of Wuhan University of Technology（Transportation Science & Engineering）

摘　　要：为研究梁式结构有限元模型修正方法的修正效率和修正精度,文中提出一种将设计参数法与灵敏度分析结合起来的模型修正方法.依据设计参数法找出对结构固有频率影响较大的设计参数,通过灵敏度分析法对设计参数的灵敏度值进行统一量纲处理,确定待修正参数的灵敏度顺序,按照灵敏度顺序从高到低依次对相应的设计参数进行单独和同时迭代修正比较,修正结果表明:采用设计参数灵敏度分步修正后的有限元模型能较准确的反应结构的静动态特性,多个设计参数同时迭代修正相比单个参数迭代的修正量更小,修正精度更高.To study the correction efficiency and accuracy of the finite element model correction method of beam structure.A model updating method combining design parameter method with sensitivity analysis was proposed.According to the design parameter method,the design parameters that have great influence on the natural frequency of the structure were found out,and the sensitivity values of the design parameters were uniformly dimensioned by the sensitivity analysis method to determine the sensitivity order of the parameters to be modified.Then,according to the order of sensitivity from high to low,the corresponding design parameters were corrected separately and simultaneously.The correction results show that the finite element model with step-by-step correction of design parameter sensitivity can accurately reflect the static and dynamic characteristics of the structure,and the correction amount of multiple design parameters at the same time is smaller and the correction accuracy is higher than that of single parameter iteration.

关 键 词：梁式结构 有限元模型修正 固有频率 设计参数法 灵敏度分析 

分 类 号：TU443[建筑科学—岩土工程]