基于整体稳定的斜交网格筒结构失效判别指标研究  

Failure discrimination for high-rise diagrid tube structures based on overall stability

作　　者：吕海霞[1] 滕军[1] 李祚华[1] 郝霖霏 

机构地区：[1]哈尔滨工业大学深圳研究生院,深圳518055

出　　处：《振动与冲击》2013年第24期96-103,共8页Journal of Vibration and Shock

基　　金：国家自然科学基金重点项目(50938001);国家自然科学基金青年基金项目(51008048)

摘　　要：高层建筑结构失效演化过程的量化分析是实现基于性能抗震设计方法的关键步骤之一,为了得到斜交网格筒结构体系基于整体稳定的失效判别方法,基于连续化方法的体系变形分析,给出斜交网格筒结构体系的初始等效抗侧刚度求解方法,并对体系的变形形态进行了探讨;通过整体稳定平衡分析得到斜交网格筒结构体系瞬时等效刚重比与结构响应的关系,并提出了基于瞬时等效刚重比变化的失效判别方法;通过对结构进行20条地震波罕遇地震作用下的弹塑性时程分析及斜交网格筒子结构模型试验,验证了该方法的正确性。Quantification of evolutionary process of structural failure is one of the critical steps for realizing performance-based a seismic design of high-rise structures. In order to establish a failure discrimination method of diagrid tube structures, the solving method of initial equivalent lateral stiffness of diagrid tube structures based on the continuous method of structural deformation analysis was proposed firstly, and the deformed shape of the structural system was also discussed. Then, the failure discrimination method based on instantaneous equivalent ratio of stiffness to weight was proposed through the overall stable equilibrium analysis. Eventually, the elastoplastic time-history response analysis under rare earthquake and the quasi-static test of high-rise diagrid tube structures were performed for verifying the correctness of the proposed method.

关 键 词：斜交网格筒结构 等效抗侧刚度 瞬时等效刚重比 失效判别 

分 类 号：TU973.25[建筑科学—结构工程]