创新组合伸臂系统在重庆来福士广场北塔楼中的应用

发布时间：2018-01-12 23:33

本文关键词：创新组合伸臂系统在重庆来福士广场北塔楼中的应用　出处：《建筑结构》2015年24期 　论文类型：期刊论文

【摘要】：对于高356m且长细比高达9.4的重庆来福士广场北塔楼,其抗侧设计为塔楼结构设计的重难点。本项目在塔楼角部引入巨柱,并采用伸臂连接核心筒角部和巨柱,以最高限度地提高结构抗侧刚度。作为主要抗侧构件的伸臂,在传统钢伸臂或混凝土伸臂的基础上,创新性地引入组合伸臂系统,该系统包括连接于巨柱上的软钢剪切耗能件、从核心筒角部延伸出的钢筋混凝土伸臂墙、连接剪切耗能件和混凝土伸臂墙的钢支撑以及围绕核心筒一周的钢筋混凝土环梁(保护核心筒)。该系统利用混凝土伸臂墙刚度较大的特点以提高结构的整体刚度,同时通过系统构件合理屈服顺序的设计,使得剪切耗能件在大震情形下屈服,起到保险丝的作用,利用其屈服后的延性和耗能能力保护混凝土伸臂墙和核心筒。采用弹塑性有限元分析和实验室节点试验对该系统进行分析计算和对比验证,结果表明计算分析和试验结果较为吻合,且符合设计要求和预期。
[Abstract]:For high 356m and slenderness ratio of up to 9.4 of Chongqing Raffles Plaza, the lateral design for tower structure design difficulties. This project introduced giant columns in the tower corner, and the arm connecting core tube corner and columns, with the highest in order to improve the lateral stiffness of the structure as the main. The lateral component of the arm, based on the traditional steel or concrete cantilever arm, the introduction of innovative combination of arm system, the system includes a shear member connected to steel columns on the overhanging reinforced concrete core tube wall extending from the corner of the ring beam, and a week around the core tube reinforced concrete support connection shear wall and concrete cantilever steel (protection tube). The system uses the characteristics of concrete cantilever large wall stiffness to improve the overall stiffness of the structure, at the same time through the system components reasonable yielding sequence design, make the shear In case of earthquake energy yield, plays the role of the fuse, the yield ductility and energy dissipation capacity of concrete protection wall and outrigger core tube. By using elastic-plastic finite element analysis and laboratory test node of the system analysis and comparison, results show that the calculation analysis and test results are in good agreement. And in accordance with the design requirements and expectations.

【作者单位】：奥雅纳工程顾问;
【分类号】：TU973.1
【正文快照】： 1典型组合伸臂系统目前国内外超高层建筑的伸臂系统采用钢桁架形式较为典型,已建成的实例也不在少数,如香港国贸、北京国贸三期、广州东塔、天津117等。这种传统设计虽然能为塔楼整体提供较好的抗侧刚度和延性,但其钢结构工期较长、单价较高、施工较困难等方面的弊端也较为突

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