摘要
南京某大跨度场馆钢结构部分采用多点同步提升的施工技术,具有提升重量大和结构复杂等特点。对该工程在提升过程中的监控技术进行了研究,分析了同步提升和不同步提升情况下结构的受力状态,并研究了监测指标和相应的监测手段和设备。结果表明被提升钢结构部分的竖向刚度不均匀,提升力的不同步对结构提升过程中的不同步状态起控制作用,部分刚度较小的薄弱部位则由不同步位移控制;结构在提升过程中的应力和位移略有波动,但总体在理论分析结果的0.9~1.1范围波动,与监测阈值一致。
The steel structure of a large-span venue in Nanjing adopts the construction technology of multi-point synchronous lifting,which has the characteristics of large lifting weight and complex structure.The monitoring technology of the project in the process of lifting was studied,the stress state of the structure in the case of synchronous lifting and asynchronous lifting was analyzed,and the monitoring indicators and the corresponding monitoring means and equipment were studied.The results show that the vertical stiffness of the lifted steel structure is nonuniform,the asynchronized state of the most lifted structure is dominated by the asynchronized lifting force during the lifting process,while some weak parts of lifted structure with small stiffness are controlled by the asynchronized displacement.The stress and displacement of the structure fluctuated slightly during the lifting process,generally in the range of 0.9~1.1 of the theoretical results,which is consistent with the definition of the monitoring threshold.
作者
谢甫哲
陈丙辉
袁小军
赵昱乔
吴一帆
XIE Fuzhe;CHEN Binghui;YUAN Xiaojun;ZHAO Yuqiao;WU Yifan(Faculty of Civil Engineering and Mechanics of Jiangsu University,Zhenjiang 212013,China;Jiangsu Testing Center for Quality of Construction Engineering Co.,Ltd.,Nanjing 210028,China)
出处
《建筑结构》
北大核心
2023年第14期126-131,共6页
Building Structure
基金
国家自然科学基金项目(51608234)
江苏省工程建设标准、标准设计编制修订项目(2019ZD108)。
关键词
大跨空间结构
复杂空间钢结构
结构监测
施工过程
同步提升
large-span space structure
complex space steel structure
structural monitoring
construction process
synchronous lifting
