重庆来福士广场北塔楼四巨柱体系研究与改进
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（1 奥雅纳工程顾问， 上海 200031; 2 凯德置地（中国）投资有限公司， 上海 200001）
［摘要］介绍了重庆来福士广场356m高北塔楼四巨柱结构体系，研究外框剪力在巨柱结构体系中的合理分配。通过调整外框次框架柱不同截面大小、连接形式，以及核心筒、伸臂结构的优化分析，确保外框架的剪力分配能满足8%的抗震专项审查意见。采用LS-DYNA进行设计大震、设计大震+0.5度以及设计大震+1度下的动力弹塑性分析，考察新旧方案不同的弹塑性分析结果，进一步验证改进后的四巨柱结构体系的可靠性、安全性。［关键词］重庆来福士广场; 巨柱; 外框剪力分配; LS-DYNA; 动力弹塑性分析中图分类号：TU318.2,TU973 文献标识码：A 文章编号：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
作者简介：朱立刚，高级工程师，一级注册结构工程师，副总工程师，Email：Li-Gang.Zhu@arup.com。
