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（中機國際工程設(shè)計研究院有限責任公司， 長沙 410007）
［摘要］《高層建筑混凝土結(jié)構(gòu)技術(shù)規(guī)程》（JGJ 3—2010）對整體穩(wěn)定性計算做出了水平荷載按照倒三角形分布、考慮結(jié)構(gòu)頂點位移相等而將結(jié)構(gòu)折算為豎向懸臂受彎構(gòu)件等假定，但這些假定和簡化降低了計算精度。通過實際工程案例，對影響剛重比的各種因素進行了分析，研究了地下室層數(shù)、地下室側(cè)向土的水平抗力系數(shù)、地下室嵌固端樓層剛度比、不同嵌固部位以及屋頂構(gòu)架等影響因素，分析不同計算程序假定的合理性，確保結(jié)構(gòu)整體穩(wěn)定性安全可靠。
［關(guān)鍵詞］整體穩(wěn)定性； 剛重比； 等效彈性側(cè)向剛度； 嵌固部位； 屋頂構(gòu)架
中圖分類號：TU973文獻標識碼：A文章編號：1002-848X(2019)07-0073-05
Study on overall stability design of a super high-rise structure in Changsha
Tan Guangyu, Zhang Jianhua, Zhang Fengliang, Hu Dengxian, Li Lianbing
(China Machinery International Engineering Design & Research Institute Co., Ltd., Changsha 410007, China)
Abstract:In the Technical specification for concrete structures of tall buildings (JGJ 3—2010), the assumptions of calculation of overall stability include inverted triangle distribution of horizontal load, converting the structure into vertical cantilever flexural member considering equivalent displacement of structure vertex. However, these assumptions and simplifications reduce the accuracy of calculation. Through practical engineering cases, various factors affecting rigidity-weight ratio were analyzed, such as the number of basement stories, horizontal resistance coefficient of basement lateral soil, stiffness ratio of embedded end floor of basement, different embedded parts and roof framework, etc. The rationality of different calculation program assumptions was analyzed to ensure the safety and reliability of the overall stability of the structure.
Keywords:overall stability; rigidity-weight ratio; equivalent elastic lateral stiffness; embedded part; roof framework
作者簡介：譚光宇，碩士，教授級高級工程師，一級注冊結(jié)構(gòu)工程師，Email:371643439@qq.com。
