某非对称连体超高层结构抗震性能分析

引用文献:

刘义仁 李鹏 杨晓 邓晓春 胡茂昂 阳波 邓欣. 某非对称连体超高层结构抗震性能分析[J]. 建筑结构,2022,48(22):58-63.

LIU Yiren LI Peng YANG Xiao DENG Xiaochun HU Maoang YANG Bo DENG Xin. Seismic performance analysis of an asymmetric connected super high-rise structure[J]. Building Structure,2022,48(22):58-63.

作者:刘义仁 李鹏 杨晓 邓晓春 胡茂昂 阳波 邓欣
单位:湖南省建筑设计院集团股份有限公司
摘要:晟通梅溪湖国际总部中心属超B级高度的连体超高层结构,存在多项不规则项,核心筒相互正交,扭转效应明显,结构受力复杂。其中核心筒的布置、连接体的设计及加强层的设置均是结构设计中的难点和重点。结合工程实例,介绍了结构体系、超限项判断、连接体的设计、加强层的设置等。对整体结构进行了小震、中震、大震作用下的抗震性能分析,对结构进行了施工过程、楼板应力和连接体专项等关键问题分析,并完成了0°和45°模型在水平力作用下的受力及变形分析。分析结果表明,通过设置较少的加强层且未设置环带桁架,在达到较好的立面效果的同时,结构还可以获得较好的抗震性能,能够达到预设的抗震性能目标。通过关键问题分析,获得了合理的施工顺序以及楼板局部加强区域,连接体的抗震性能良好,能够很好地协同双塔的水平变形。
关键词:晟通梅溪湖国际总部中心;连体超高层结构;超限分析;专项分析;抗震性能;
作者简介:刘义仁,硕士,高级工程师,主要从事高层结构设计工作,Email:419794530@qq.com。
基金:HD设计阶段BIM技术应用指引研究(KY0300-0000-2019-0013)。
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Seismic performance analysis of an asymmetric connected super high-rise structure
LIU Yiren LI Peng YANG Xiao DENG Xiaochun HU Maoang YANG Bo DENG Xin
(Hunan Architectural Design Institute Group Co., Ltd.)
Abstract: SNTO Meixi Lake International Headquarters Center is a connected super high-rise structure with a super B height level. The structural design has several irregular items with perpendicular core tubes, obvious torsion effect, complex structure stress. The layout of the core tubes, the design of the connector and the setting of the strengthened layers are the difficulties and emphases in structural design. Combined with engineering examples, structural system, the judgment of out-of-code items, the design of the connector, and the setting of strengthened layers were introduced. The seismic performance analysis of the overall structure under small, medium and large earthquakes was carried out. The special analyses of the key items like the construction process, the slab stress and building connector, as well as the force and deformation performance of 0° and 45° models under the horizontal force were carried out. The analysis results show that through setting fewer strengthened layers without belt truss, the structure is able to obtain good seismic performance and meet the pre-set seismic performance goal with nice facade effect. Through the analysis of key items, the reasonable settings of the construction process and the part reinforcing area of the floor slab are obtained. The connector has a good seismic performance and can well coordinate the horizontal deformation of the double towers.
Keywords: SNTO Meixi Lake International Headquarters Center; connected super high-rise structure; out-of-code analysis; special analysis; seismic performance
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