ABSTRACT

Based on the results of the shaking table model tests, the three-dimensional (3D) numerical simulation and analysis of the shaking table model test of the soil-box foundation-12-story reinforced concrete (RC) frame structure system are carried out using ABAQUS software in this paper. The material nonlinearity, geometric nonlinearity, and nonlinearity of the contact interfaces between the foundation and surrounding soil are considered in the numerical models. By comparing the simulated data with the measured data of the shaking table model tests, the simulated results are well consistent with the shaking table test records. It can be verified that the numerical models are reasonable. The numerical models’ key parameters are adjusted, and the influence of these parameters on the dynamic soil-structure interaction (DSSI) is analyzed. The results show that their influence is significant for studying the seismic response of the DSSI system, as the foundation buried depth decreases, the peak contact pressure and the peak inter-story drift at the top of the structure increase 30.69% and 45.24%, respectively, whereas the peak acceleration magnification factors at the top of the structure decreases 32.66%.

摘要

基于振动台模型试验结果，对土箱基础-12层钢筋混凝土（RC）框架结构体系的振动台模型试验进行三维（3D）数值模拟分析。本文采用 ABAQUS 软件。数值模型考虑了地基与周围土壤接触界面的材料非线性、几何非线性和非线性。将模拟数据与振动台模型试验实测数据进行对比，模拟结果与振动台试验记录吻合较好。可以验证数值模型是合理的。对数值模型的关键参数进行了调整，分析了这些参数对动态土-结构相互作用（DSSI）的影响。