【摘要】 采用非线性多弹簧弹塑性有限元模型,对我国一座最高的民用超高层钢筋混凝土剪力墙—核心筒结构进行了非线性地震响应破坏分析。通过分级加载分析了不同地震烈度下超高层建筑从弹性、塑性直至失效的结构内力和变形的整个过程,并采用静力Push O ver方法和1/50比尺的振动台模型试验进行了破坏分析。结果表明超高层建筑的最薄弱位置在1/2到2/3之间高度处。非线性数值分析的结果和振动台模型破坏试验现象符合一致。更多还原

【Abstract】 The nonlinear seismic analysis of an out-of-code high-rising RC frame-core tube building,which is the highest residential building in China,is performed using multi-springs elastic-plastic finite element model.The whole seismic response process of deformation and stress from elasticity to damage and failure is studied by applying different grade earthquake load.The corrupt analysis is also studied by Push-Over method and the experimental investigation of 1/50 scale highrise building model test on 3×4 meters shaking table is described.Some measures for improving the anti-seismic capacity are advised.The results show that the weakest position of such high-rising building is between the 1/2 and 2/3 height of the building.The comparison of the results from numerical analysis with the earthquake distruction test shows a satisfactory agreement on damage and failure phenomenon.更多还原