某9度区复杂框架结构隔震设计

Isolation Design of A Complex Frame Structure in Grade Nine Area

对位于9度高烈度区采取隔震技术的某复杂框架结构进行了分析设计,确定结构选用普通橡胶隔震支座与铅芯橡胶隔震支座,并采用振型分解反应谱法和时程分析法对结构进行了地震反应分析。结果表明:所选用的隔震支座布置是合理的,并且采用隔震技术可显著降低上部结构的楼层剪力、层间位移角和扭转变形;结合抗震规范,上部结构可按降低1.5度设计,经过隔震设计后的隔震结构抗震性能高于传统设计结构。

In this paper, a complex frame structure which is in nine degree high intensity seismic region and adopted isolation technique is analyzed and designed. Rubber Bearings and Lead Rubber Bearings are selected in this project after analyzed. Seismic behaviors under frequent earthquake and rare earthquake are calculated with the response spectral method and time history response analysis method. Analysis results show that the bearing layout is reasonable. Storey sheer, drift angle, and torsional deformation are measurable reduction with isolation technique. The intensity could reduce 1.5 degree to superstructure base on Chinese seismic code. The earthquake resistance of structure which adopted isolation technique is better than the traditional structure.