结合振动台试验的钢框架-支撑体系抗震性能研究
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摘要
鉴于天津图书馆结构布置的复杂性,为研究其抗震性能,进行了振动台试验,并与数值模拟进行了比较分析。通过相似关系原理的有关公式将试验数据推算成原型结构相应数据,将数值模拟分析与试验值推算的结构动力特性参数进行了对比,说明采用大比例模型试验能给原型结构动力特性试验推算值的合理性与可靠性带来保证。同时对原型结构的频率、不同工况下结构进入塑性的程度等进行了分析,并将原型结构的层间位移角与抗规的有关规定进行对比,原型结构的抗震性能均符合抗规有关要求且安全储备高。
In view of the complexity of Tianjin library structural layouts,in order to study the seismic performance,shaking table tests were conducted,and the results were compared with numerical simulation results.The test data were made into the corresponding prototype structure data according to the similarity relation formula.The numerical simulation analysis results and the calculated values of prototype structure data from the test value were compared,which shows that the large-scale model test brings rationality and reliability assurance to the calculation values of dynamic characteristics test for prototype structure.The frequency and the plastic degree under different working conditions of prototype structure were analyzed.The interlayer displacement angle of prototype structure was also compared with the relevant requirements of the current Code for seimic design of buildings.Results show that the seismic performance of the prototype structure meets the requirements of Code for seimic design of buildings with large safety stock.
In view of the complexity of Tianjin library structural layouts,in order to study the seismic performance,shaking table tests were conducted,and the results were compared with numerical simulation results.The test data were made into the corresponding prototype structure data according to the similarity relation formula.The numerical simulation analysis results and the calculated values of prototype structure data from the test value were compared,which shows that the large-scale model test brings rationality and reliability assurance to the calculation values of dynamic characteristics test for prototype structure.The frequency and the plastic degree under different working conditions of prototype structure were analyzed.The interlayer displacement angle of prototype structure was also compared with the relevant requirements of the current Code for seimic design of buildings.Results show that the seismic performance of the prototype structure meets the requirements of Code for seimic design of buildings with large safety stock.
引文
[1]YU HAIFENG,ZHANG WENYUAN,ZHANG YAOCHUN et al.Shaking table test and numerical analysis of a 1∶12 scale model of a special concentrically braced steel frame with pinned connections[J].Earthquake Engineering and Engineering Vibration,2010,9(1):51-63.
[2]李岳,姜忻良.土与结构相互作用振动台试验模型土设计方法分析[J].工程力学,2010,27(1):73-76.
[3]石启印,李爱群,李培彬,等.北京机场新塔台结构振动台试验研究[J].工业建筑,2004,34(9):40-45.
[4]季静,赵书宁,韩小雷,等.复杂高层建筑的模拟地震振动台试验[J].华南理工大学学报:自然科学版,2007,35(3):83-89.
[5]TSAI C S,LIN YUNGCHANG.Mathematical modeling and full-scale shaking table tests for multi-curve buckling restrained braces[J].Earthquake Engineering and Engineering Vibration,2009,8(3):359-372.
[6]吕西林,程海江,卢文胜,等.两层轻型木结构足尺房屋模型模拟地震振动台试验研究[J].土木工程学报,2007,40(10):41-49.
[7]邓振丹.复杂钢框架-支撑体系结构振动台试验研究及有限元模拟[D].天津:天津大学,2011.
[8]周颖,吕西林,卢文胜.不同结构的振动台试验模型等效设计方法[J].结构工程师,2006,22(4):37-40.
[9]邹昀,吕西林,钱江.上海环球金融中心大厦结构抗震性能研究[J].建筑结构学报,2006,27(6):74-80.
[10]GB 50011—2010建筑抗震设计规范[S].北京:中国建筑工业出版社,2010.
[2]李岳,姜忻良.土与结构相互作用振动台试验模型土设计方法分析[J].工程力学,2010,27(1):73-76.
[3]石启印,李爱群,李培彬,等.北京机场新塔台结构振动台试验研究[J].工业建筑,2004,34(9):40-45.
[4]季静,赵书宁,韩小雷,等.复杂高层建筑的模拟地震振动台试验[J].华南理工大学学报:自然科学版,2007,35(3):83-89.
[5]TSAI C S,LIN YUNGCHANG.Mathematical modeling and full-scale shaking table tests for multi-curve buckling restrained braces[J].Earthquake Engineering and Engineering Vibration,2009,8(3):359-372.
[6]吕西林,程海江,卢文胜,等.两层轻型木结构足尺房屋模型模拟地震振动台试验研究[J].土木工程学报,2007,40(10):41-49.
[7]邓振丹.复杂钢框架-支撑体系结构振动台试验研究及有限元模拟[D].天津:天津大学,2011.
[8]周颖,吕西林,卢文胜.不同结构的振动台试验模型等效设计方法[J].结构工程师,2006,22(4):37-40.
[9]邹昀,吕西林,钱江.上海环球金融中心大厦结构抗震性能研究[J].建筑结构学报,2006,27(6):74-80.
[10]GB 50011—2010建筑抗震设计规范[S].北京:中国建筑工业出版社,2010.
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