(1 中机中联工程有限公司, 重庆 400039; 2 重庆大学土木工程学院, 重庆 400045)

摘要: 重庆两江协同规划展示中心采用钢框架+支撑结构形式,顶部通过大跨度桁架组合形成两江交汇的寓意,跨度达到 39m,最大悬挑长度达到 12. 4m. 建筑处在山地斜坡上,属于复杂的山地钢结构建筑. 根据建筑场地及结构的不规则性以及超限情况,对复杂山地结构基础及主体结构进行设计;基于三维分析软件建立三维有限元模型,对整体结构进行地震作用下的分析,对结构整体及局部稳定、穿层柱、桁架支撑钢框柱、钢桁架连廊、抗连续倒塌、施工顺序要求等关键项进行详细分析并采取加强措施. 结果表明:通过上述设计、分析与施工保障及加强措施,可以保证整个复杂山地钢结构的安全可靠.

关键词: 重庆两江协同规划展示中心; 山地钢结构; 大跨长悬挑; 抗震性能设计; 稳定性分析; 连续倒塌

中图分类号:TU393. 3 文献标志码:A 文章编号:1002⁃848X(2022)08⁃0008⁃08

DOI:10. 19701 / j.jzjg.20211449

Design and analysis of complex steel structure on slopes of Chongqing Liang JiangCoordinated Planning Exhibition Center

TAN Qian1,2, LUO Xiaofeng1, XU Xiangpeng1, CHEN Yingyi1, ZHANG Xingjie1, WEI Fujia1

(1 CMCU Engineering Co., Ltd., Chongqing 400039, China;2 School of Civil Engineering, Chongqing University, Chongqing 400045, China)

Abstract: Chongqing Liang Jiang Coordinated Planning Exhibition Center adopts the steel frame and support structure form.And its top has the intersection of two rivers implication which through combining with two large⁃span truss. The span oflarge⁃span truss reaches 39m and the maximum cantilever length reaches 12. 4m. The building locate at the mountain slope,which belongs to the complex steel structure building on slopes. According to the irregularity of the building site andstructure and the over⁃limit degree, the foundation and main structure of complex structure on slopes was designed. Basedon the 3D analysis software, a 3D finite element model was established to analyze the overall structure under earthquakeaction. The key items such as overall and local stability of the structure, through⁃layer columns, truss⁃supported steel framecolumns, steel truss corridors, continuous collapse resistance, and construction sequence requirements were analyzed indetail and strengthened. The results show that the safety and reliability of the whole complex steel structure on slopes can beguaranteed through the above design, analysis,construction guarantee and strengthening measures.

Keywords:Chongqing Liang Jiang Coordinated Planning Exhibition Center; steel structure on slopes; large⁃span and longcantilever; seismic performance design; stability analysis; progressive collapse

∗重庆市博士后科学基金项目(cstc2019jcyj⁃bshX0070),重庆市勘察设计行业创新研究与能力建设项目(勘设创研 2019⁃12),重庆市九龙坡区科技计划项目(2020⁃02⁃007⁃Y).

第一作者:谭潜,博士,工程师,主要从事地震动、结构抗震与振动控制的研究,Email:tanqianzl@ sina.cn.

[引用本文] 谭潜,罗小峰,徐翔鹏,等. 重庆两江协同规划展示中心复杂山地钢结构设计分析 [ J]. 建筑结构,2022,52(8):8⁃15,7. TAN Qian, LUO Xiaofeng, XU Xiangpeng, et al. Design and analysis of complex steel structure onslopes of Chongqing Liang Jiang Coordinated Planning Exhibition Center[J]. Building Structure,2022,52(8):8⁃15,7.