上海中心大厦施工过程数值分析与监测研究  

Numerical Analysis and Monitoring Research for Construction Progress of Shanghai Tower

作　　者：张其林[1] 吕佳[1] 李晗[1] 赵昕[2] 陈鲁 

机构地区：[1]同济大学土木工程学院,上海200092 [2]同济大学建筑设计研究院(集团)有限公司,上海200092 [3]上海同济建设工程质量检测站,上海200092

出　　处：《施工技术》2013年第15期9-12,16,共5页Construction Technology

基　　金：国家863项目(2009AA04Z420);上海市科技人才计划项目(11XD1404900);上海市科技攻关计划(09DZ1207704)

摘　　要：超高层建筑施工周期较长,施工过程中结构时变、材料时变、荷载时变等将对结构受力性能产生影响。为对超高层结构施工过程进行有效监控和分析,以上海中心大厦实际施工过程为例展开研究。建立了考虑施工过程的有限元模型,同时对施工过程进行了长期监控;采用现场监测和数值模拟计算结果进行比较,通过调整有限元计算模型来预测后续施工过程中的结构状态。研究结果表明:自振频率识别值比有限元结果偏小,混凝土材料时变对竖向变形及构件内力影响明显,考虑季节温差的竖向变形计算结果与实测数据较为吻合。The construction cycle of super high-rise building is long.Time-dependent structure,material,load will impact the behavior of the structure during the construction.For the purpose of studying the behavior of high-rise building in construction phase,a monitoring and analysis project of Shanghai Tower was conducted.Considering the actual construction progress,a finite element model was established and a long term monitoring was conducted.Through the comparison between the monitoring and the numerical analysis,the structural behavior of subsequent construction stage by modifying the calculation model can be predicted.The analyzing results indicate that the frequency of identification is lower than FEM result.The time-dependent material has a great impact on the vertical deformation and member forces.The vertical displacements of numerical results which consider the effect of the season temperature difference are in good agreement with the monitoring results.

关 键 词：高层建筑 超高层组合结构 模拟 监测 徐变 季节温差 

分 类 号：TU973.14[建筑科学—结构工程]