隔震在短肢剪力墙高层住宅中的应用研究

Application and research for isolation in the short-pier shear wall of high-rise residential

基于目前规范对短肢剪力墙结构性能指标限制严格的问题,提出将隔震技术引入短肢剪力墙结构,通过合理设置隔震层降低结构地震反应,扩大短肢剪力墙的应用范围。对一具体工程进行大震下的弹塑性时程分析,结果表明,短肢剪力墙隔震结构在8度罕遇地震下的反应小于非隔震结构7度罕遇地震下的反应,在高烈度区具有足够的安全储备,为短肢剪力墙在高烈度地区应用提供一种可行的方法;同时对比了SAP2000非线性分析中直接积分法和FNA法在隔震分析中的有效性,得出FNA法在保证精度的前提下能有效提高非线性分析的效率。

Considering current rigorous specification limits on structural performance indicators of short-pier shear wall structure,seismic isolation technology can be introduced into the short-pier shear wall structure to reduce the structural seismic response and expand applications of short-pier shear wall by setting reasonable isolation layer. The elastic-plastic time-history analysis of a specific short-pier shear wall residential was carried out. Results show that seismic response of the short-pier shear wall isolated structure under 8 degree rare earthquake is smaller than that of non-isolated structure under 7degree rare earthquake. Short-pier shear wall structure with isolation has sufficient safety margin and is a feasible method applied in high intensity region. While the effectiveness of the direct integral method and FNA method in nonlinear isolation analysis of SAP2000 program were compared to come to the conclusion that FNA method can effectively improve the efficiency of nonlinear analysis when the accuracy is ensured.