摘要
根据所进行的土体-框架结构的振动台模型试验,采用基于HHT的随机减量法确定出结构、土体的参数,在ANSYS中建立数值模型,计算了不同工况下结构模型的加速度响应,结果表明:当小幅值输入情况下,采用线弹性计算时,计算结果与实测结果吻合较好.但是,当输入地震波幅值增大以后,仍采用线弹性计算会带来较大的误差,而对于土体采用等效线性化进则可以减小与实测结果的误差.本文的计算结果与实测数据吻合较好,正确地反映出了不同工况下结构的反应规律,可为土-结构振动台试验的三维数值计算模型的建立及参数的合理选取方法提供参考.
Some attentions in numerical simulation of soil-structure interaction were introduced in this paper firstly.Then parameters of structure and soil were determined by using the random decrement method based on HHT,according to the results of soil-frame structure shaking table model test.Numerical model was established in ANSYS to calculate the acceleration response of the structure model under different seismic inputs.It shows that the calculated results are in good agreement with the measured values when linear elasticity is used in the case of small amplitude input.As the input seismic amplitude increases,linear elastic calculation will bring large error,but the error can be reduced by using equivalent linearization of soil.The calculated results are in good agreement with the measured data,it can reflect the response laws of the structure under different seismics,and the research can provide some reference for the establishment of the three-dimensional numerical model of soil-structure shaking table test and the reasonable selection of parameters.
作者
康帅
楼梦麟
王永锋
董正方
KANG Shuai LOU Menglin WANG Yongfeng DONG Zhengfang(School of Civil Engineering and Architecture, Henan University, Henan Kaifeng 475004, China State Key Laboratory of Disaster Reduction in Civil Engineering of Tongji University, Shanghai 200092, China)
出处
《河南大学学报（自然科学版）》
CAS
2017年第5期566-577,共12页
Journal of Henan University:Natural Science
基金
国家自然科学基金资助项目(51408195)
河南省教育厅科学技术研究重点项目(16A560029)
