普通强度钢耗能器滞回性能的试验研究
|
摘要
基于普通强度钢材的弹塑性滞回耗能特性,设计了3种由Q235B钢材加工而成的小型钢耗能器.为了研究其滞回耗能性能,提出合理的构造形式,分别对3种小型钢耗能器进行了低周往复加载试验,并对其等效刚度、耗能能力、阻尼特性等进行分析.结果表明:弯曲型钢耗能器塑性变形较大,滞回性能稳定,但初始刚度较小,承载能力低;剪切型钢耗能器具有较高的初始刚度及屈服力,但由于局部应力集中容易引起平面外屈曲,变形能力较差;弯剪型钢耗能器既能提高耗能器的侧向刚度,又可避免面外失稳,兼具弯曲型和剪切型钢耗能器的优点,具有良好的工作性能.
In this paper,first,three small dampers made with Q235B steel were designed according to the hystere-tic energy dissipation characteristics of normal-strength steel.Then,to investigate the hysteretic energy dissipation ability and obtain a reasonable form of the dampers,low-cyclic loading tests were carried out,and the equivalent stiffness,the energy dissipation capacity and the damping characteristics of the dampers were analyzed.The results demonstrate that(1) the bending-type damper is of large plastic deformation,stable hysteretic performance,low initial stiffness and poor bearing capacity;(2) the shearing-type damper is of high initial stiffness and great yield force,but the deformation ability of it is poor due to the out-plane buckling induced by the local stress concentration;and(3) the bending-shearing-type damper,which possesses the advantages of both the bending-and the shearing-type dampers,can not only improve the lateral stiffness but also avoid the out-plane instability,so that it is of high working performance.
In this paper,first,three small dampers made with Q235B steel were designed according to the hystere-tic energy dissipation characteristics of normal-strength steel.Then,to investigate the hysteretic energy dissipation ability and obtain a reasonable form of the dampers,low-cyclic loading tests were carried out,and the equivalent stiffness,the energy dissipation capacity and the damping characteristics of the dampers were analyzed.The results demonstrate that(1) the bending-type damper is of large plastic deformation,stable hysteretic performance,low initial stiffness and poor bearing capacity;(2) the shearing-type damper is of high initial stiffness and great yield force,but the deformation ability of it is poor due to the out-plane buckling induced by the local stress concentration;and(3) the bending-shearing-type damper,which possesses the advantages of both the bending-and the shearing-type dampers,can not only improve the lateral stiffness but also avoid the out-plane instability,so that it is of high working performance.
引文
[1]赵鸿铁,徐赵东,张兴虎.耗能减震控制的研究、应用与发展[J].西安建筑科技大学学报,2001,33(1):1-6.Zhao Hong-tie,Xu Zhao-dong,Zhang Xing-hu.Study,ap-plication and development of energy dissipation anddamping control[J].Journal of Xi’an University of Ar-chitecture&Technology,2001,33(1):1-6.
[2]Kelly J M,Skinner R I,Heine A J.Mechanisms of energyabsorption in special devices for use in earthquake resis-tant structures[J].Bull.N.Z.Society for Earthquake En-gineering,1972,5(3):63-88.
[3]Yasumasa Suzui,Yasuhiko Takahashi.Full-scale tests onsteel-frame structure with Y-shaped brace damper undertransverse load[R].Toyko:Obayashi Corporation Techni-cal Research Institute,2000.
[4]Marioni A.Development of a new type of energy dissipa-ting device for seismic protection of bridges[C]∥Pro-ceedings of the 10th European Conference on EarthquakeEnginnering.Rotterdam:A A Balkema Publishers,1994:745-763.
[5]周云.金属耗能减震结构设计[M].武汉:武汉理工大学出版社,2006.
[6]李钢,李宏男.新型软钢阻尼器的减震性能研究[J].振动与冲击,2006,25(3):66-72.Li Gang,Li Hong-nan.Performance study on new mildsteel dampers damping[J].Journal of Vibration andShock,2006,25(3):66-72.
[7]Li Hong-nan,Ying Jia.Theoretical and experimental stu-dies on reduction for multi-modal seismic responses ofhigh-rise structures by TLDs[J].Journal of Vibration andControl,2004,10(7):1041-1056.
[8]邢书涛,郭迅.一种新型软钢阻尼器力学性能和减震效果的研究[J].地震工程与工程振动,2003,23(6):179-186.Xing Shu-tao,Guo Xun.Study on mechanical behavior andeffectiveness of a new type of mild steel damper[J].Earthquake Engineering and Engineering Vibration,2003,23(6):179-186.
[9]潘晋,吴成亮,仝亮,等.E型钢阻尼器数值仿真及试验研究[J].振动与冲击,2009,28(7):192-197.Pan Jin,Wu Cheng-liang,Tong Liang,et al.Simulationand experimental study on an E-shape steel damper[J].Journal of Vibration and Shock,2009,28(7):192-197.
[10]郭猛,姚谦峰.框架-复合剪力墙结构水平位移计算方法[J].华南理工大学学报:自然科学版,2010,38(4):119-124.Guo Meng,Yao Qian-feng.Calculation method of hori-zontal displacement on the frame composite wall struc-ture[J].Journal of South China University of Technolo-gy:Natural Science Edition,2010,38(4):119-124.
[11]周云,邓雪松,阴毅,等.复合型铅粘弹性阻尼器的性能试验研究[J].工程抗震与加固改造,2005,27(1):42-50.Zhou Yun,Deng Xue-song,Yin Yi,et al.Study on be-havior of the mixed lead viscoelastic damper[J].Earth-quake Resistant Engineering and Retrofitting,2005,27(1):42-50.
[2]Kelly J M,Skinner R I,Heine A J.Mechanisms of energyabsorption in special devices for use in earthquake resis-tant structures[J].Bull.N.Z.Society for Earthquake En-gineering,1972,5(3):63-88.
[3]Yasumasa Suzui,Yasuhiko Takahashi.Full-scale tests onsteel-frame structure with Y-shaped brace damper undertransverse load[R].Toyko:Obayashi Corporation Techni-cal Research Institute,2000.
[4]Marioni A.Development of a new type of energy dissipa-ting device for seismic protection of bridges[C]∥Pro-ceedings of the 10th European Conference on EarthquakeEnginnering.Rotterdam:A A Balkema Publishers,1994:745-763.
[5]周云.金属耗能减震结构设计[M].武汉:武汉理工大学出版社,2006.
[6]李钢,李宏男.新型软钢阻尼器的减震性能研究[J].振动与冲击,2006,25(3):66-72.Li Gang,Li Hong-nan.Performance study on new mildsteel dampers damping[J].Journal of Vibration andShock,2006,25(3):66-72.
[7]Li Hong-nan,Ying Jia.Theoretical and experimental stu-dies on reduction for multi-modal seismic responses ofhigh-rise structures by TLDs[J].Journal of Vibration andControl,2004,10(7):1041-1056.
[8]邢书涛,郭迅.一种新型软钢阻尼器力学性能和减震效果的研究[J].地震工程与工程振动,2003,23(6):179-186.Xing Shu-tao,Guo Xun.Study on mechanical behavior andeffectiveness of a new type of mild steel damper[J].Earthquake Engineering and Engineering Vibration,2003,23(6):179-186.
[9]潘晋,吴成亮,仝亮,等.E型钢阻尼器数值仿真及试验研究[J].振动与冲击,2009,28(7):192-197.Pan Jin,Wu Cheng-liang,Tong Liang,et al.Simulationand experimental study on an E-shape steel damper[J].Journal of Vibration and Shock,2009,28(7):192-197.
[10]郭猛,姚谦峰.框架-复合剪力墙结构水平位移计算方法[J].华南理工大学学报:自然科学版,2010,38(4):119-124.Guo Meng,Yao Qian-feng.Calculation method of hori-zontal displacement on the frame composite wall struc-ture[J].Journal of South China University of Technolo-gy:Natural Science Edition,2010,38(4):119-124.
[11]周云,邓雪松,阴毅,等.复合型铅粘弹性阻尼器的性能试验研究[J].工程抗震与加固改造,2005,27(1):42-50.Zhou Yun,Deng Xue-song,Yin Yi,et al.Study on be-havior of the mixed lead viscoelastic damper[J].Earth-quake Resistant Engineering and Retrofitting,2005,27(1):42-50.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心