(1 中衡设计集团股份有限公司, 苏州 215123;2 苏州嘉盛建设工程有限公司, 苏州 215021ꎻ3 中亿丰建设集团股份有限公司, 苏州 215021)

摘要: 苏州嘉盛中心办公楼建筑高度 24m,平面呈蝴蝶形状,结构体系采用钢混凝土混合框架结构,属于具有扭转不规则、凹凸不规则、楼板不连续等多项不规则的超限多层建筑结构. 首先解读了结构构成逻辑,然后找寻了结构潜在的薄弱部位并设置屈曲约束支撑,针对结构受力特点制定针对性的结构抗震性能目标,并基于多尺度模型对关键节点进行受力性能分析. 分析结果表明,结构能够满足预设的抗震性能目标ꎻ屈曲约束支撑发挥了第一道抗震防线作用,罕遇地震下有效地耗散了地震能量.

关键词: 钢混凝土混合框架;超限多层建筑;屈曲约束支撑;抗震性能;多尺度

中图分类号:TU352 文献标志码:A 文章编号:1002-848X(2022)20-0136-07

DOI:10.19701 / j.jzjg.ZJ220047

Seismic performance analysis of steel-concrete hybrid frame structure office building of Suzhou Jiasheng Center

ZHU Xunyan1, TAN Lihua1, ZHANG Wei1, ZENG Xin1, WANG Bin2, AN Weiwei3, GUAN Jingcheng1

(1 ARTS Group Co. , Ltd. , Suzhou 215123, China;2 Suzhou Jiasheng Construction Group Co. , Ltd. , Suzhou 215021,China;3 Zhongyifeng Construction Group Co. , Ltd. , Suzhou 215021, China)

Abstract: Suzhou Jiasheng Center office building is 24m high and the plane is in the shape of a butterfly. The structuralsystem adopts the steel-concrete hybrid frame structure and it belongs to a out-of-code multi-layer building structure withtorsion irregularities, concave-convex irregularities, floor discontinuity and other irregularities. Firstly, the structural logicwas interpreted, and then the potential weak parts of the structure were found and buckling restrained braces were set.According to the stress characteristics of the structure, the seismic performance target of the structure was formulated, andthe mechanical performance of key nodes was analyzed based on the multi-scale model. The analysis results show that thestructure can meet the preset seismic performance targets. Buckling restrained braces plays the role of the first seismicdefense line and dissipates earthquake energy effectively under rare earthquakes.

Keywords:steel-concrete hybrid frame;out-of-code multi-layer building;buckling restrained braces;seismic performanceꎻmulti-scale

∗中衡设计集团科研项目(2019-S1):多高层结构减震技术研究及工程应用.

第一作者:朱寻焱,硕士,高级工程师,主要从事超高层与大跨度复杂结构设计工作,Email:zhuxunyan@ artsgroup. cn.

[引用本文] 朱寻焱,谈丽华,张薇,等. 苏州嘉盛中心办公楼钢-混凝土混合框架结构抗震性能分析[J]. 建筑结构,2022,52(20):136-142. ZHU Xunyan,TAN Lihua,ZAHNG Wei,et al. Seismic performance analysis of steel-concretehybrid frame structure office building of Suzhou Jiasheng Center[J]. Building Structure,2022,52(20):136-142.