软弱地基上隔震结构地震反应及隔震效果的预测方法研究

发布时间：2018-12-17 01:44

【摘要】：基于软弱地基上隔震结构的动力反应特征,提出了软弱地基-隔震结构相互作用体系的动力特性简化分析方法,在此基础上建立了软弱地基条件下考虑SSI效应的水平向减震系数、隔震结构剪力及隔震层位移的简化预测方法,通过简化方法的计算结果与振动台模型试验结果、时程分析计算结果的对比分析,验证了提出的简化分析方法的可行性和易用性,对比分析结果同时表明简化方法得到的预测结果具有较理想的精度,能够合理反映软弱地基-隔震结构体系的动力相互作用效应,为评估软弱地基上SSI效应对隔震结构设计方案的影响提供了有效方法。
[Abstract]:Based on the dynamic response characteristics of isolated structures on soft foundation, a simplified analysis method for dynamic characteristics of soft ground-isolated structure interaction system is presented. On the basis of this, a simplified prediction method of horizontal damping coefficient, shear force of isolated structure and displacement of isolation layer considering SSI effect under soft foundation is established. The calculation results of the simplified method and the test results of shaking table model are given. The comparison and analysis of the calculated results of time history analysis verify the feasibility and ease of use of the proposed simplified analysis method. The results of comparison and analysis also show that the prediction results obtained by the simplified method have an ideal accuracy. It can reasonably reflect the dynamic interaction effect of soft ground-isolated structure system and provide an effective method for evaluating the influence of SSI effect on the design scheme of isolated structure on weak foundation.
【作者单位】：南京工程学院建筑工程学院;南京工业大学交通学院;
【基金】：国家自然科学基金面上基金资助项目(51778282) 南京工程学院校级科研基金资助项目(CKJA201505,JCYJ201618)
【分类号】：TU352.12

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