(浙江省省直建筑设计院有限公司, 杭州 310030)

摘要: 杭州“星创城”商业综合体建筑高度 30. 8m、长 300m,为大型复杂高层钢筋混凝土框架结构. 为了实现结构预定的设计性能目标,首先从概念上通过设缝解决复杂结构的平立面规则性问题,再运用 YJK 和 MIDAS Gen 对主体结构进行了多遇地震弹性计算及时程分析、设防烈度地震性能设计以及罕遇地震弹塑性时程分析,此外,对开大洞楼板进行了中震计算,对超长楼板温度应力进行了补充计算,最后对下穿地铁线的地下室抗压、抗浮以及通过桩基与天然基础协同工作来减小变形差的问题进行了计算分析. 通过上述几个步骤的计算分析并对关键构件及重要部位采取了加强结构外圈刚度、大悬挑梁根部设置构造性型钢、楼板应力集中处进行加强及底板预留后注浆孔等有针对性的加强措施,本结构达到了预定的设计性能目标.

关键词: 高层结构; 抗震性能化; 超限判断; 楼板开洞; 弹性时程分析; 温度应力; 地铁上盖

中图分类号:TU375. 4 文献标志码:A 文章编号:1002-848X(2023)11-0041-07

DOI:10. 19701 / j. jzjg. LS220131

Key points and analysis of structural design of “Xing Chuang City”shopping mall in Hangzhou

LIU Yong, ZHANG Yuan, LOU Zeyang, LIU Rongda, ZHU Li

(Zhejiang Provincial Direct Architectural Design Institute, Hangzhou 310030, China)

Abstract:“Xing Chuang City”shopping mall in Hangzhou has a building height of 30. 8m and a length of 300m. It is a largecomplex high-rise reinforced concrete frame structure. In order to achieve the predetermined design performance goal of thestructure, firstly,the problem of the regularity of the plane elevation was solved conceptually by joint setting. Then, by usingYJK and MIDAS Gen, the elastic calculation and time-history analysis of the main structure under frequent earthquake,seismic performance design of fortification intensity and elastic-plastic time-history analysis under rare earthquake werecarried out. In addition, the mid-earthquake calculation was carried out for the large opening slab, and the supplementarycalculation was made for the temperature stress of the super-long slab. And finally, the problems of anti-pressure,anti-floating of the basement under the subway line and the problem that the pile foundation and natural foundation worktogether to reduce the deformation difference was analyzed. Through the calculation and analysis of the above-mentionedsteps and taking targeted strengthening measures for the key components and important parts, such as increasing thestiffness of the outer ring structure, using structural steel at the root of large cantilever beams, strengthening stressconcentration points on the floor slabs, and providing grouting holes in the bottom plate,the structure has achieved thepredetermined design performance goal.

Keywords: high-rise structure; performance-based seismic; transfinite judgment; floor opening; elastic time historyanalysis; temperature stress; subway roof

第一作者:刘勇,硕士,高级工程师,一级注册结构工程师,主要从事大型复杂结构设计,Email: 335307314@ qq. com.

[引用本文] 刘勇,张媛,楼泽杨,等. 杭州“星创城” 商业综合体结构设计要点与分析[ J]. 建筑结构,2023,53(11):41-47,87. LIU Yong,ZHANG Yuan,LOU Zeyang,et al. Key points and analysis of structural design of “ XingChuang City”shopping mall in Hangzhou[J]. Building Structure,2023,53(11):41-47,