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（中國建筑西南設(shè)計研究院有限公司， 成都 610042）
［摘要］對一個高度為546m，高寬比為10的巨型框架-核心筒結(jié)構(gòu)的整體穩(wěn)定性進(jìn)行了分析研究，推導(dǎo)了該結(jié)構(gòu)修正后的剛重比。分析了各種因素如高寬比、樓層質(zhì)量分布以及各構(gòu)件（伸臂桁架、環(huán)形桁架、外框架梁、巨柱及核心筒、次框架、斜撐）等對巨型框架-核心筒結(jié)構(gòu)的整體穩(wěn)定性影響，并總結(jié)了這些因素的影響規(guī)律。結(jié)果表明，結(jié)構(gòu)整體穩(wěn)定性隨著高寬比增大而降低，隨著樓層質(zhì)量分布系數(shù)減小而提高；外圍設(shè)置巨型斜撐可有效提高結(jié)構(gòu)整體穩(wěn)定性。
［關(guān)鍵詞］巨型框架結(jié)構(gòu)； 整體穩(wěn)定性； 剛重比； 高寬比； 屈曲分析
中圖分類號：TU318文獻(xiàn)標(biāo)識碼：A文章編號：1002-848X(2020)21-0026-05
Overall stability analysis for the mega frame-core tube structure with high aspect ratio
PENG Zhizhen, WU Xiaobin, CHEN Wenming, XIAO Kejian, FENG Zhongwei, ZHU Daoqing
（China Southwest Architectural Design and Research Institute Ltd., Co., Chengdu 610042, China）
Abstract:The overall stability for a mega frame-core tube structure with the height of 546 meters and aspect ratio of 10 was analyzed and researched. The revised rigidity-gravity ratio of the structure was derived. The influence of various factors such as aspect ratio, floor mass distribution, outrigger truss, belt truss, outer frame beam, mega-column, core tube, sub-frame, diagonal bracing on the stability of the mega frame-core tube structure were analyzed. The regular pattern of these factors were summarized.The results show that the overall stability of the structure decreases with the increase of the height width ratio, and increases with the decrease of the floor mass distribution coefficient; and the overall stability of the structure can be effectively improved by setting giant braces around the structure.
Keywords:mega frame structure； overall stability； rigidity-gravity ratio； aspect ratio； buckling analysis
作者簡介：彭志楨，碩士，高級工程師，一級注冊結(jié)構(gòu)工程師，Email:pzzhen@126.com。
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