【摘要】 目前使用的反应谱振型叠加法在分析复杂结构的地震反应时,可能引起较大的误差。本文提出了一种新的计算处理方法,不论对简单或复杂结构,只要任取两个不同的地震输入方向,仅增加少量的计算工作量,即可得到结构中任一点或截面上的最大应力或内力,且该方法可以很方便地加入到现有计算程序中。文中还提出了结构抗震主轴的概念,定义了结构整体设计合理系数以及结构能质比,为从宏观上比较同一结构在不同、方向以及不同结构之间的抗震性能提供了客观依据。更多还原

【Abstract】 Unnegligible errors may be caused by using conventional modal superposition method based on response spectrum theory to analyze complex structures under earthquake loading. A new procedure for complex structural earthquake response analysis presented in this paper can be used to evaluate the maximum stress or internal force at any point or cross-section within a structure only at the cost of’ increasing little computer time and incorporated easily into the existing computer programs. According to the energy absorbed by structures under earthquake,a concept of ’aseismic principal axes of structures’ is put forward and some coefficients are defined, which can be used to check if the structure is well-designed and compare the aseismic capacity for resisting earthquake among different structures.更多还原