上海环球金融中心结构模态测试
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摘要
上海环球金融中心作为巨型柱、巨型斜撑、带状桁架以及核心筒构成的三维巨型框架-筒形式的钢与混凝土混合结构,系目前我国大陆最高的超高层建筑,结构材料和形式有大胆创新。结构模态系衡量结构分析结果可靠性的重要参数,通过合理选择传感器和数据采集器,克服了长周期、信号弱的困难,经现场测试得到了结构双向平动和扭转振动频率和振型。这些信息可以作为结构设计人员确认或改进设计阶段结构分析结果的依据,也可作为设计类似超高层建筑时估计地震和风荷载的参考。
Shanghai World Financial Center is a 101 stories composite structure made of reinforced concrete and steel with total height of 492 meters.Two modes in orthogonal horizontal and torsional directions were obtained by employing force-balanced accelerometers and data logger with very high resolution.Results show that the first natural period of the structure is as long as 6.7 second;the first two modal frequencies are very close in despite of the quite difference in structural configurations in X and Y direction.Comments on test techniques and test results were presented.
Shanghai World Financial Center is a 101 stories composite structure made of reinforced concrete and steel with total height of 492 meters.Two modes in orthogonal horizontal and torsional directions were obtained by employing force-balanced accelerometers and data logger with very high resolution.Results show that the first natural period of the structure is as long as 6.7 second;the first two modal frequencies are very close in despite of the quite difference in structural configurations in X and Y direction.Comments on test techniques and test results were presented.
引文
[1]Kasai K,Chuan W,Wada A.Responses of tall buildings in tokyo during the2011Great East Japan Earthquake[C].Presentation at he4 th Kwang-Hua Forum and Opening Symposium of Tongji Shaking Table Array,Shanghai,Dec.11-12,2011.
[2]朱杰江,吕西林,邹昀.上海环球金融中心模型结构振动台试验与理论分析的对比研究[J].土木工程学报,2005,38(10):18-26.ZHU Jie-jiang,LXi-lin,ZOU Yun.Comparison between shaking table tests and analytical results on Shanghai Global Financial Center[J].Journal of Civil Engineering,2005,38(10):18-26.
[3]邹昀、吕西林.超高层巨型结构振动特性研究[J].世界地震工程,2007,23(2):125-130.ZOU Yun,LXi-lin.Study on dynamic properties of high rise mega structure[J].Journal of World Earthquake Engineering,2007,23(2):125-130.
[4]邹昀,吕西林,卢文胜,等.上海环球金融中心大厦整体结构振动台试验设计[J].地震工程与工程振动,2005,25(4):54-59.ZOU Yun,LXi-lin,LU Wen-sheng,et al,Model design of Shanghai Global Financial Center for shaking table tests[J].Journal of Earthquake Engineering and Engineering Vibration,2005,25(4):54-59.
[5]郭迅,阎砺铭,裴强,等.新型数据采集分析系统及其在工程振动中的应用[J].地震工程与工程振动,2002,22(4):60-65.GUO Xun,Yan Li-ming,PEI Qiang,et al.New type of data logger system and its application in engineering vibration[J].Journal of Earthquake Engineering and Engineering Vibration,2002,22(4):60-65.
[6]郭迅,李洪涛,王金国.某悬索桥振动特性现场测试及数值模拟[J].世界地震工程,2008,24(3):1-7.GUO Xun,LI Hong-tao,WANG Jin-guo,Modal parameters measurement and numerical simulation of a cable stayed bridge[J].Journal of World Earthquake Engineering,2008,24(3):1-7.
[7]Housner G W,Keightley W O.Vibrations of linearly tapered cantilever beams[J].Engineering Mechanics Division,Proceedings of the American Society of Civil Engineers[J].April,1962,88(EM 2):352-380.
[2]朱杰江,吕西林,邹昀.上海环球金融中心模型结构振动台试验与理论分析的对比研究[J].土木工程学报,2005,38(10):18-26.ZHU Jie-jiang,LXi-lin,ZOU Yun.Comparison between shaking table tests and analytical results on Shanghai Global Financial Center[J].Journal of Civil Engineering,2005,38(10):18-26.
[3]邹昀、吕西林.超高层巨型结构振动特性研究[J].世界地震工程,2007,23(2):125-130.ZOU Yun,LXi-lin.Study on dynamic properties of high rise mega structure[J].Journal of World Earthquake Engineering,2007,23(2):125-130.
[4]邹昀,吕西林,卢文胜,等.上海环球金融中心大厦整体结构振动台试验设计[J].地震工程与工程振动,2005,25(4):54-59.ZOU Yun,LXi-lin,LU Wen-sheng,et al,Model design of Shanghai Global Financial Center for shaking table tests[J].Journal of Earthquake Engineering and Engineering Vibration,2005,25(4):54-59.
[5]郭迅,阎砺铭,裴强,等.新型数据采集分析系统及其在工程振动中的应用[J].地震工程与工程振动,2002,22(4):60-65.GUO Xun,Yan Li-ming,PEI Qiang,et al.New type of data logger system and its application in engineering vibration[J].Journal of Earthquake Engineering and Engineering Vibration,2002,22(4):60-65.
[6]郭迅,李洪涛,王金国.某悬索桥振动特性现场测试及数值模拟[J].世界地震工程,2008,24(3):1-7.GUO Xun,LI Hong-tao,WANG Jin-guo,Modal parameters measurement and numerical simulation of a cable stayed bridge[J].Journal of World Earthquake Engineering,2008,24(3):1-7.
[7]Housner G W,Keightley W O.Vibrations of linearly tapered cantilever beams[J].Engineering Mechanics Division,Proceedings of the American Society of Civil Engineers[J].April,1962,88(EM 2):352-380.
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