斜交網(wǎng)格筒結(jié)構(gòu)二階效應(yīng)及整體穩(wěn)定分析*
呂海霞，滕軍，李祚華
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(哈爾濱工業(yè)大學深圳研究生院，廣東深圳518055)[摘要] 高層建筑結(jié)構(gòu)的整體穩(wěn)定性是結(jié)構(gòu)設(shè)計的基本要求，斜交網(wǎng)格筒結(jié)構(gòu)體系作為新穎的結(jié)構(gòu)體系越來越多地被用于高層及超高層結(jié)構(gòu)中。通過連續(xù)化方法對斜交網(wǎng)格筒結(jié)構(gòu)體系進行變形分析，給出斜交網(wǎng)格筒結(jié)構(gòu)體系等效抗側(cè)剛度的近似求解方法；對倒三角形水平荷載作用下斜交網(wǎng)格筒結(jié)構(gòu)重力二階效應(yīng)與等效剛重比的關(guān)系進行了研究，得到合理的等效剛重比限值；最后通過體系整體穩(wěn)定分析，給出了高層建筑結(jié)構(gòu)體系的臨界等效剛重比。[關(guān)鍵詞] 等效抗側(cè)剛度；重力二階效應(yīng)；等效剛重比中圖分類號：TU973+.25 文獻標識碼：A 文章編號：1002-848X(2013)S2-0354-06作者簡介：呂海霞，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
