【摘要】 目前对支承于下部结构的空间结构体系,一般采用上下部结构整体建模的方式计算其地震响应,通常计算量很大,为工程设计带来不便.本文提出一种可考虑质量、刚度分布的下部支承结构体系的简化方法,可应用于体系复杂、扭转显著结构的地震响应分析.通过对某实际结构的计算分析验证,本文方法能大幅减少计算量,结构整体地震响应计算精度满足工程设计要求,但个别构件应力计算精度有待改进.更多还原

【Abstract】 To estimate the seismic response of spatial structure with a supporting system,an overall model is usually needed,which can be computationally demanding for routine application.Developed herein is a simplified method considering the distribution of mass and stiffness and available for complicated structure with significant torsion.When applied to a practical project,this method is demonstrated to be accurate in overall seismic response estimating,while less accurate in stress calculating of individual members.更多还原