多点输入下大跨空间网格结构的可靠度分析  

SEISMIC RELIABILITY ANALYSIS OF SPACE LATTICE STRUCTURES UNDER MULTIPLE SUPPORT EXCITATIONS

作　　者：董贺勋[1] 叶继红[1] 

机构地区：[1]东南大学RC&PC教育部重点实验室

出　　处：《振动与冲击》2006年第3期131-137,共7页Journal of Vibration and Shock

基　　金：国家自然科学基金项目(50108003)

摘　　要：根据对不同跨度和结构形式的大跨空间网格结构所进行的多点输入和一致输入地震作用下结构杆件可靠度指标的计算,分析这类结构在两种输入方法下危险杆件的差异,包括差异的分布规律、随视波速和结构跨度的变化情况,进而对不同形式的大跨空间网格结构采用何种地震动输入方式提出建议。According to the calculation of element reliability index of space lattice structures with different spans and different forms under multiple support excitations or simple support excitation,the differences of dangerous elements and their distribution law are thoroughly analyzed involving the effects of structural span and apparent velocity.The barrier value of structural span corresponding to different forms of structure is presented if simple support excitation and multiple support excitaions can replace each other.Suggestions about what kind way of seismic imput is appropriate to different forms of space lattice structures are given.

关 键 词：多点输入 大跨空间网格结构 可靠度 一致输入 

分 类 号：TU393.3[建筑科学—结构工程]