大跨空间网格结构在多维多点输入下的简化计算方法  

Simplified method of long-span space lattice structures under multi-dimensional and multi-support excitation

作　　者：白学丽[1] 叶继红[1] 

机构地区：[1]东南大学土木工程学院

出　　处：《空间结构》2008年第2期30-37,共8页Spatial Structures

基　　金：国家自然科学基金资助项目(50108003;90715005)

摘　　要：在对多维输入和一维输入进行比较分析的基础上,建立了多维多点输入下计算杆件内力的简化公式,通过计算多维一致输入、一维一致输入和一维多点输入下的杆件内力,可由简化方法得到多维多点输入下的杆件内力,将模拟地震波的时间缩短了一半.分析表明,采用简化公式使计算过程简单易行,节省计算时间,并可获得满意的计算精度.Based on the differences of structural response between multi-dimensional excitation and simple-dimensional excitation,a simplified method to calculate member forces under multi-dimensional and multi-support excitation is presented in this paper.After calculating the member forces under multi-dimensional excitation,simple-support excitation and multi-support excitation,the member forces under multi-dimensional and multi-support excitation through the simplified formula can be obtained.The time of simulation...

关 键 词：多维多点输入 简化方法 大跨空间网格结构 

分 类 号：TU399[建筑科学—结构工程]