西南交通大学8m×10m地震模拟振动台运行对场地振动的影响分析
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摘要
西南交通大学建成的8m×10m/160t振动台是目前国内规模最大的振动台,对其运行质量和振动影响进行评价具有示范效应。探讨该振动台振动影响的现场实验于2017年初展开,实测结果表明:该振动台在工作频段内受控性能很好,对地震动信号重现度很高;台面满载满负荷运行时实验室建筑基础10m以内地面振动加速度实测值不超过6.6gal,振动速度小于2mm/s,不会对实验室厂房及附属办公建筑的安全、使用舒适性及人们正常工作、生活造成不利影响。
The free-field vibration induced by the 8 m×10 m/160 t shake table was analyzed and measured. The shake table performs well with good frequency response and high reproducibility for strong ground motion signal. The induced free-field acceleration within 10 m from the shake table foundation is only 6.6 gal while the table runs at its full capacity,and the induced velocity is less than 2 mm/s. Therefore,the full load operation of the shake table has no significant impact on human bodies and safety of buildings.
The free-field vibration induced by the 8 m×10 m/160 t shake table was analyzed and measured. The shake table performs well with good frequency response and high reproducibility for strong ground motion signal. The induced free-field acceleration within 10 m from the shake table foundation is only 6.6 gal while the table runs at its full capacity,and the induced velocity is less than 2 mm/s. Therefore,the full load operation of the shake table has no significant impact on human bodies and safety of buildings.
引文
曹艳梅,2006,列车引起的自由场地及建筑物振动的理论分析和实验研究,博士学位论文,北京:北京交通大学.
陈云敏、凌道盛、周承涛,2002,打桩振动近场波动的数值分析和实测比较,振动工程学报,15(2),178~184.
邓亚虹、夏唐代、陈敬虞,2006,车辆动荷载作用下隔振沟响应增强区数值分析,岩土工程学报,28(12),2121~2127.
侯兴民、廖振鹏、黄浩华,2003,动力基础频域响应分析,工程力学,20(4),122~127.
黄浩华,2008,地震模拟振动台的设计与应用技术,北京:地震出版社.
黄菊花、肖祥芷、董湘怀等,2001,关于动力机器基础激发的地面振动衰减公式的讨论,塑性工程学报,8(3),85~88.
李毅、段元锋、项贻强等,2010,多层工业厂房的振动测试及裂缝病害分析,振动与冲击,29(6),199~206.
刘必灯、郭迅、周洋等,2016,大型地震模拟振动台运行对周围场地影响的实验研究,振动与冲击,35(13),212~218.
刘卫丰、刘维宁、袁扬等,2013,地铁列车与道路车辆运行对环境的振动影响现场测试与分析,铁道学报,35(5),80~84.
徐建,2002,建筑振动工程手册,北京:中国建筑工业出版社.
冶金工业部建筑研究总院,1990,机器动荷载作用下建筑物承重结构的振动计算和隔振设计规程(YBJ 55-90),北京:冶金工业出版社.
Chopra A K,2001,Dynamics of structures:Theory and applications to earthquake engineering,2nd ed,Englewood Cliffs,New Jersey,USA:Prentice Hall.
Luco J E,Ozcelik O,Conte J P,et al,2011,Experimental study of the dynamic interaction between the foundation of the NEES/UCSD Shake Table and the surrounding soil:Reaction block response,Soil Dyn Earthq Eng,31(7),954~973.
Ren X S,Tao Y F,Zhou B,2013,Study on vibration induced by the shaking tables array in large scale civil lab,In:Proceedings of the 13th East Asia-Pacific Conference on Structural Engineering and Construction,Sapporo,Japan:EASEC.
陈云敏、凌道盛、周承涛,2002,打桩振动近场波动的数值分析和实测比较,振动工程学报,15(2),178~184.
邓亚虹、夏唐代、陈敬虞,2006,车辆动荷载作用下隔振沟响应增强区数值分析,岩土工程学报,28(12),2121~2127.
侯兴民、廖振鹏、黄浩华,2003,动力基础频域响应分析,工程力学,20(4),122~127.
黄浩华,2008,地震模拟振动台的设计与应用技术,北京:地震出版社.
黄菊花、肖祥芷、董湘怀等,2001,关于动力机器基础激发的地面振动衰减公式的讨论,塑性工程学报,8(3),85~88.
李毅、段元锋、项贻强等,2010,多层工业厂房的振动测试及裂缝病害分析,振动与冲击,29(6),199~206.
刘必灯、郭迅、周洋等,2016,大型地震模拟振动台运行对周围场地影响的实验研究,振动与冲击,35(13),212~218.
刘卫丰、刘维宁、袁扬等,2013,地铁列车与道路车辆运行对环境的振动影响现场测试与分析,铁道学报,35(5),80~84.
徐建,2002,建筑振动工程手册,北京:中国建筑工业出版社.
冶金工业部建筑研究总院,1990,机器动荷载作用下建筑物承重结构的振动计算和隔振设计规程(YBJ 55-90),北京:冶金工业出版社.
Chopra A K,2001,Dynamics of structures:Theory and applications to earthquake engineering,2nd ed,Englewood Cliffs,New Jersey,USA:Prentice Hall.
Luco J E,Ozcelik O,Conte J P,et al,2011,Experimental study of the dynamic interaction between the foundation of the NEES/UCSD Shake Table and the surrounding soil:Reaction block response,Soil Dyn Earthq Eng,31(7),954~973.
Ren X S,Tao Y F,Zhou B,2013,Study on vibration induced by the shaking tables array in large scale civil lab,In:Proceedings of the 13th East Asia-Pacific Conference on Structural Engineering and Construction,Sapporo,Japan:EASEC.