新型防屈曲耗能支撑的设计、试验及其减震性能研究
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摘要
设计制作了一种新型全钢、装配式的防屈曲耗能支撑(BRB),给出了主要的理论计算公式,采用有限元方法对其工作过程和机理进行数值模拟并进行了足尺实验研究,最后,将这种装置安装到框架结构,基于非线性动力时程分析评估其减震性能。研究结果表明了简化计算和有限元分析在产品初步设计中的有效性;防屈曲耗能支撑明显减小了结构动力响应,提高了结构的抗震安全性。
A new type of full steel assembled buckling-restrained brace(BRB) is proposed.Main theoretical formulas are given,while the working process and mechanism of BRB is simulated by employing the finite element analysis(FEA),further more,the full-scale test is conducted to verify the results of simplified calculation method and FEA.Finally,the nonlinear dynamic time history analysis of buckling-restrained braced frames(BRBF) structure is simulated to assess the seismic mitigation performance of BRB.It showsd that the effectiveness of theoretical simplified calculation and FEA in initial design of BRB product and BRB is able to significantly mitigate the dynamic responses and improve the safety of structure subjected to earthquake.
A new type of full steel assembled buckling-restrained brace(BRB) is proposed.Main theoretical formulas are given,while the working process and mechanism of BRB is simulated by employing the finite element analysis(FEA),further more,the full-scale test is conducted to verify the results of simplified calculation method and FEA.Finally,the nonlinear dynamic time history analysis of buckling-restrained braced frames(BRBF) structure is simulated to assess the seismic mitigation performance of BRB.It showsd that the effectiveness of theoretical simplified calculation and FEA in initial design of BRB product and BRB is able to significantly mitigate the dynamic responses and improve the safety of structure subjected to earthquake.
引文
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[5]李国强,孙飞飞,陈素文,等.大吨位国产TJⅡ型屈曲约束支撑的研制与试验研究[J].建筑钢结构进展,2009,11(4):22-26.LI Guoqiang,SUN Feifei,CHEN Suwen,et al.Development and experiential study of large-tonnage domestic TJII buckling-restrained brace[J].Pro-gress in Steel Building Structures,2009,11(4):22-26.(in Chinese)
[6]邓雪松,陈真,周云.间隙与支座类型对开孔三重钢管防屈曲耗能支撑性能的影响[J].地震工程与工程振动,2010,30(3):64-69.DENG Xuesong,CHEN Zhen,ZHOU Yun.Effects of gaps and bearing types on performance of perforated triple-steel tube buckling-restrained brace[J].Journal of Earthquake Engineering and Engineering Vibration,2010,30(3):64-69.(in Chinese)
[7]赵俊贤,吴斌.防屈曲支撑的工作机理及稳定性设计方法[J].地震工程与工程振动,2009,29(3):131-139.ZHAO Junxian,WU Bin.Working mechanism and stability design methods of buckling-restrained braces[J].Journal of Earthquake Engineering andEngineering Vibration,2009,29(3):131-139.(in Chinese)
[8]王华琪.防屈曲支撑及耗能减震技术的研究与工程应用[D].上海:同济大学,2008.WANG Huaqi.Research and application of bucking-restained brace and energy dissipation technology[D].PhD thesis of Tongji University,2008.(in Chinese)
[9]程光煜,叶列平,崔鸿超.防屈曲耗能钢支撑设计方法的研究[J].建筑结构学报,2008,29(1):40-48.CHEN Guangyu,YE Lieping,CUI Hongchao.Study on the design method of buckling-restrained brace[J].Journal of Building Structures,2008,29(1):40-48.(in Chinese)
[10]周云.防屈曲耗能支撑结构设计与应用[M].北京:中国建筑工业出版社,2007.ZHOU Yun.Structure design and application of buckling-restrained brace[M].Beijin:China Architecture&Building Press,2007.(in Chinese)
[11]ANSI/AISC341-05 Seismic Provisions for Structural Steel Buildings[S].
[12]FEMA 450 Recommended Provisions for Seismic Regulations for New Buildings and Other Structures[S].
[13]GB50011-2010建筑抗震设计规范[S].
[2]Black C,Markris N,Aiken L.Component testing,seismic evaluation and characterization of buckling-restrained braces[J].Journal of StructuralEngineering,ASCE,2004,130(6):880-889.
[3]Xie Q.State of the art of buckling-restrained braces in Asia[J].Journal of Constructional Steel Research,2005,61:727-748.
[4]Berman J W,Michel B.Cyclic testing of a buckling restrained raced frame unconstrained gusset connections[J].Journal of Structural Engineer-ing,2009,135(12):1499-1510.
[5]李国强,孙飞飞,陈素文,等.大吨位国产TJⅡ型屈曲约束支撑的研制与试验研究[J].建筑钢结构进展,2009,11(4):22-26.LI Guoqiang,SUN Feifei,CHEN Suwen,et al.Development and experiential study of large-tonnage domestic TJII buckling-restrained brace[J].Pro-gress in Steel Building Structures,2009,11(4):22-26.(in Chinese)
[6]邓雪松,陈真,周云.间隙与支座类型对开孔三重钢管防屈曲耗能支撑性能的影响[J].地震工程与工程振动,2010,30(3):64-69.DENG Xuesong,CHEN Zhen,ZHOU Yun.Effects of gaps and bearing types on performance of perforated triple-steel tube buckling-restrained brace[J].Journal of Earthquake Engineering and Engineering Vibration,2010,30(3):64-69.(in Chinese)
[7]赵俊贤,吴斌.防屈曲支撑的工作机理及稳定性设计方法[J].地震工程与工程振动,2009,29(3):131-139.ZHAO Junxian,WU Bin.Working mechanism and stability design methods of buckling-restrained braces[J].Journal of Earthquake Engineering andEngineering Vibration,2009,29(3):131-139.(in Chinese)
[8]王华琪.防屈曲支撑及耗能减震技术的研究与工程应用[D].上海:同济大学,2008.WANG Huaqi.Research and application of bucking-restained brace and energy dissipation technology[D].PhD thesis of Tongji University,2008.(in Chinese)
[9]程光煜,叶列平,崔鸿超.防屈曲耗能钢支撑设计方法的研究[J].建筑结构学报,2008,29(1):40-48.CHEN Guangyu,YE Lieping,CUI Hongchao.Study on the design method of buckling-restrained brace[J].Journal of Building Structures,2008,29(1):40-48.(in Chinese)
[10]周云.防屈曲耗能支撑结构设计与应用[M].北京:中国建筑工业出版社,2007.ZHOU Yun.Structure design and application of buckling-restrained brace[M].Beijin:China Architecture&Building Press,2007.(in Chinese)
[11]ANSI/AISC341-05 Seismic Provisions for Structural Steel Buildings[S].
[12]FEMA 450 Recommended Provisions for Seismic Regulations for New Buildings and Other Structures[S].
[13]GB50011-2010建筑抗震设计规范[S].
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