基于关联性分析的模型更新混合试验参数敏感性分析方法  

Parameter sensitivity analysis method for hybrid simulation with model updating based on correlation analysis

作　　者：陈谦 杨格 王尚长 邓杨鹏 CHEN Qian;YANG Ge;WANG Shangzhang;DENG Yangpeng(School of Civil Engineering and Architecture,Wuhan University of Technology,Wuhan 430000,China;Sanya Science and Education Innovation Park,Wuhan University of Technology,Sanya 572000,China;China Construction Industrial Engineering and Technology Research Academy Co.,Ltd.,Beijing 101300,China;China Construction Engineering Testing(Beijing)Co.,Ltd.,Beijing 101300,China)

机构地区：[1]武汉理工大学土木工程与建筑学院,湖北武汉430000 [2]武汉理工大学三亚科教创新园,海南三亚572000 [3]中建工程产业技术研究院有限公司,北京101300 [4]中建工程试验检测(北京)有限公司,北京101300

出　　处：《地震工程与工程振动》2025年第2期192-202,共11页Earthquake Engineering and Engineering Dynamics

基　　金：国家自然科学基金项目(52478202,52008320)。

摘　　要：模型更新混合试验利用试验数据识别试验子结构的参数并更新数值子结构的模型,有效避免了传统混合试验数值子结构参数不准确带来的误差。为了保障参数识别的准确性,所选本构参数必须具备可观测性和较高敏感性。现有的局部参数敏感性分析方法属于定性分析,无法具体定量评估参数的敏感性。为此,提出了一种基于关联性分析的参数敏感性分析方法。该方法通过计算本构参数与恢复力之间的关联系数,定量评估本构参数的参数敏感性,计算简单。分别对使用Kent-Scott-Park本构模型的混凝土和三线性本构模型的复合型阻尼器进行参数敏感性分析,并与局部参数敏感性分析方法得到的结果进行对比。研究结果表明,对于混凝土的本构参数2种方法所选较高敏感性参数一致,而局部参数敏感性分析方法不适用于复合型阻尼器,所提方法可以确定复合型阻尼器本构参数的参数敏感性。使用不同的模型更新方式对一个6层钢框架结构配备复合型阻尼器进行模型更新混合试验数值仿真,比较参数识别的效果,发现通过所提方法选择的本构参数更易于识别,模型更新混合试验数值仿真的精度和效率更高,验证了方法的正确性和有效性。Hybrid simulation with model updating utilizes the test data to identify the parameters of the experimental substructure and updates the model of the numerical substructure,effectively avoiding the errors induced by the inaccurate parameters of the numerical substructure in traditional hybrid simulation.To ensure the accuracy of parameter identification,the selected constitutive parameters must be observable and highly sensitive.The existing local parameter sensitivity analysis method belongs to qualitative analysis and cannot specifically and quantitatively evaluate the sensitivity of the parameters.Therefore a parameter sensitivity analysis method based on correlation analysis is put forward.This method quantitatively evaluates the parameter sensitivity of constitutive parameters by calculating the correlation coefficient between constitutive parameters and restoring force,and the calculation is simple.The parameter sensitivity analysis of concrete employing the Kent-Scott-Park constitutive model and the composite damper using the trilinear constitutive model is conducted respectively,and the results are compared with those obtained by the local parameter sensitivity analysis method.The results show that the higher sensitivity parameters selected by the two methods for the constitutive parameters of concrete are consistent,while the local parameter sensitivity analysis method is not suitable for the composite damper.The proposed method can determine the parameter sensitivity of the constitutive parameters of the composite damper.A six-story steel frame structure equipped with a composite damper was subjected to a hybrid simulation with model updating numerical simulation using different model update methods.The effects of parameter identification were compared and it was found that the constitutive parameters selected by the proposed method were easier to identify,and the hybrid simulation with model updating numerical simulation had higher accuracy and efficiency,which verified the correctness and effectivenes

关 键 词：混合试验 参数识别 模型更新 关联性分析 敏感性分析 

分 类 号：TU317[建筑科学—结构工程]