中广核大厦超长悬挑钢结构施工阶段监测及计算模拟分析  

Staged Construction Simulation and Monitoring of Steel Cantilever Structure in China Guangdong Nuclear Power Group Building

作　　者：辛业洪 韩杰[1] 黄浩[2] 赵超[2] 

机构地区：[1]广东大亚湾核电服务(集团)有限公司,广东深圳518000 [2]重庆大学土木工程学院,重庆404100

出　　处：《建筑钢结构进展》2013年第5期54-59,共6页Progress in Steel Building Structures

基　　金：教育部高等学校博士学科点科研基金(1020607220110051);中央高校基本科研业务费资助项目(CDJZR12200023)

摘　　要：中广核大厦结构形式新颖,其北楼自10层到屋顶层为悬挑钢结构,采用大悬臂钢桁架结构体系。该超长悬挑钢结构重量大,卸载施工过程中,结构受力状态经历突变,转换节点应力状态复杂。为了保证结构安全,对该超长悬挑钢结构进行了施工阶段监测及施工模拟分析。分析及监测结果表明:中广核大厦超长悬挑钢结构转换节点受力状态合理;通过桁架受力机制很好地控制了悬挑结构的应力水平及变形幅值;结构受力状态与设计意图相符。验证了采用施工仿真模拟-现场监测-施工后补充分析的方法,可以合理地指导施工方案的确定、保证施工安全及质量、有效地验证设计意图的实现状况,是一种保证重要结构安全性的综合方法,该监测系统和方法可以用于类似的大型钢结构工程的实施。China Guangdong Nuclear Power Group Building utilizes an innovative structure,and there is a large-span steel cantilever truss structure from the 10th to 24th floor in the north tower of the structure.This cantilever is in a huge weight and thus experiences complex internal forces during the construction.In order to ensure structural safety,finite element analysis(FEA)and structure monitoring were carried out during the construction.The monitoring results indicated the stress at the transfer joint of this cantilever is reasonable,and truss structure is capable of controlling stress level and deformation limit in the cantilever.This paper verified reliability of the approach which consists of construction simulation,structure monitoring,and re-analysis process.This is a comprehensive approach which ensures structural safety during the construction of huge structures,and thus it can be applied in the construction of similar structures.

关 键 词：悬挑钢结构 施工阶段模拟 健康监测 卸载 

分 类 号：TU745.1[建筑科学—建筑技术科学]