多点输入下大跨空间网格结构的强度破坏研究  

Strength failure of long-span space lattice structures under multi-support excitation

作　　者：储烨[1] 叶继红[1] 

机构地区：[1]东南大学土木工程学院,江苏南京210096

出　　处：《振动工程学报》2007年第3期297-302,共6页Journal of Vibration Engineering

基　　金：国家自然科学基金资助项目(50108003)

摘　　要：考虑了材料非线性,对大跨空间网格结构在多点和一致输入下进行动力响应分析。通过对极限加速度峰值、最大节点位移时程、塑性杆件数量和分布及网壳破坏形态这些重要参数的统计、对比、分析和归纳,剖析了大跨空间网格结构在多点输入和一致输入下的强度破坏机理。The elastoplastic dynamic behaviors of space lattice structures are thoroughly analyzed under multiple support excitation and simple support excitation. Some important parameters such as the utmost peak value of acceleration, time history of high-point displacement, the amount and distribution of elements under plastic, the deformation of shell in ruins are counted, contrasted, analyzed and concluded. Based upon these results, the rules of strength fracture about space lattice structure are studied under multiple support excitation and simple support excitation.

关 键 词：结构工程 多点输入 材料非线性 大跨空间网格结构 强度破坏 

分 类 号：TU353[建筑科学—结构工程]