斜交网格筒结构二阶效应及整体稳定分析*
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(哈尔滨工业大学深圳研究生院，广东深圳518055)[摘要] 高层建筑结构的整体稳定性是结构设计的基本要求，斜交网格筒结构体系作为新颖的结构体系越来越多地被用于高层及超高层结构中。通过连续化方法对斜交网格筒结构体系进行变形分析，给出斜交网格筒结构体系等效抗侧刚度的近似求解方法；对倒三角形水平荷载作用下斜交网格筒结构重力二阶效应与等效刚重比的关系进行了研究，得到合理的等效刚重比限值；最后通过体系整体稳定分析，给出了高层建筑结构体系的临界等效刚重比。[关键词] 等效抗侧刚度；重力二阶效应；等效刚重比中图分类号：TU973+.25 文献标识码：A 文章编号：1002-848X(2013)S2-0354-06作者简介：吕海霞，博士，Email;haixia_one@126.com。Analysis on gravity second-order effects and the overall stability of diagrid tube structuresLv Haixia, Teng Jun, Li Zuohua(Shenzhen Graduate School, Harbin Institute of Technology, Shenzhen 518055, China)Abstract : The overall stability of the high-rise building structure is the basic requirements of structural design, approximate equivalent lateral stiffness of high-rise building structural system in this article was given by deformation analysis; The gravity second-order effects of the high-rise building structure under inverted triangle horizontal lateral loads were researched with the equivalent stiffness-gravity ratio variation and the reasonable values of equivalent stiffness-gravity ratio were gotten; Finally, critical equivalent stiffness-gravity ratio was obtained by analysis about overall stability of the high-rise structures.Keywords: equivalent lateral stiffness; gravity second-order effects; equivalent stiffness-gravity ratio
