作　　者： ; ;

机构地区： 北京工业大学建筑工程学院

出　　处： 《武汉理工大学学报（交通科学与工程版）》 2010年第5期978-980,985,共4页

摘　　要： 将结构系统强刚度耦合失效模式用并联系统模拟,采用逐步等效线性化方法,基于强度主要失效模式计算在单元截面相继失效历程中的强度和刚度失效模式之间的相关性及其交集失效概率.通过算例对比分析半刚接与刚接钢框架同一失效历程的失效概率,结果表明半刚性连接相对增大了结构系统强刚度耦合失效概率,使其成为主要失效模式.因此半刚接钢框架考虑强刚度失效模式更符合实际情况. Coupling Failure modes of strength and stiffness in structural system are expressed as parallel system.The step by step equivalent linearization method is adopted to calculate the relativity between strength failure mode and stiffness failure mode and to the failure probability of their intersection at the each failure state of strength failure mode.By example,failure probability of semi-rigid steel frame is analyzed at the each failure state and compared with that of its corresponding rigid frame.The results show that semi-rigid joints increase coupling failure probability of frame strength and stiffness and make it main failure mode.Semi-rigid steel frame considering coupling failure modes of strength and stiffness is suitable to real failure case.

关 键 词： 半刚性节点 钢框架 可靠性 强刚度耦合 等效失效模式

领　　域： [建筑科学] [建筑科学]