重慶來福士廣場北塔樓四巨柱體系研究與改進
朱立剛1，柳杰1，張長1，吳世超1, 王雋2
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（1 奧雅納工程顧問， 上海 200031; 2 凱德置地（中國）投資有限公司， 上海 200001）
［摘要］介紹了重慶來福士廣場356m高北塔樓四巨柱結(jié)構(gòu)體系，研究外框剪力在巨柱結(jié)構(gòu)體系中的合理分配。通過調(diào)整外框次框架柱不同截面大小、連接形式，以及核心筒、伸臂結(jié)構(gòu)的優(yōu)化分析，確保外框架的剪力分配能滿足8%的抗震專項審查意見。采用LS-DYNA進行設(shè)計大震、設(shè)計大震+0.5度以及設(shè)計大震+1度下的動力彈塑性分析，考察新舊方案不同的彈塑性分析結(jié)果，進一步驗證改進后的四巨柱結(jié)構(gòu)體系的可靠性、安全性。［關(guān)鍵詞］重慶來福士廣場; 巨柱; 外框剪力分配; LS-DYNA; 動力彈塑性分析中圖分類號：TU318.2,TU973 文獻標(biāo)識碼：A 文章編號：1002-848X(2015)24-0016-06
Study and improvement of four mega column structural system of north tower for Raffles City in ChongqingZhu Ligang1, Liu Jie1, Zhang Chang1, Wu Shichao1, Wang Aaron2(1 Arup, Shanghai 200031, China; 2 Capitaland China Investment Co., Ltd., Shanghai 200001, China）Abstract: The four mega column structural system of north tower with height of 356m for Raffles City in Chongqing was introduced. Reasonable distribution of outer frame shear in mega column structural system was studied. The section sizes and connection forms of secondary frame columns of outer frame were adjusted and optimization analysis was carried out in corewall and outriggers, making sure that the shear distribution of outer frame can satisfy the special seismic review comment of 8%. LS-DYNA was used to carry out dynamic elastic-plastic analysis under design rare earthquake, design rare earthquake plus 0.5 degree of seismic intensity and design rare earthquake plus 1 degree of seismic intensity. Different elastic-plastic analysis results of new and old schemes were investigated to further verify the reliability and safety of the four mega column structural system.Keywords: Raffles City in Chongqing; mega column; shear distribution of outer frame; LS-DYNA; dynamic elastic-plastic analysis
作者簡介：朱立剛，高級工程師，一級注冊結(jié)構(gòu)工程師，副總工程師，Email：Li-Gang.Zhu@arup.com。
