1. Civil Engineering Institute ,Kunming University of Science and Technology,Kunming 650500,china;
2 .College of Urban Construction and Safety Engineering, Shanghai Institute of Technology, Shanghai 201418, China;
3.Shanghai Lanke Building Damping Technology Co. ,Ltd. ,Shanghai 200433，China
Abstract：Based on the calculation method of "Technical specification for seismic energy dissipation of building", the additional effective damping ratio formula for single-degree-freedom system with buckling restrained braces has been derived,additional effective damping ratio of structure is analyzed under different conditions, and the results are verified by free vibration decrement method. The results show that:before the structure yields,the additional effective damping ratio increased at first and then decreased with the increment of the structure deformation,after the structure yields,the additional effective damping ratio varies with the stiffness of structure.The design principles of damping buckling restrained brace and the selection method of the additional effective damping ratio its provide to the structure are also discussed.
吴克川1，陶 忠1，韦光兰1，胡大柱2,3，余文正1. 地震作用下防屈曲支撑减震结构附加有效阻尼比计算及变化规律研究[J]. 振动与冲击, 2016, 35(2): 146-152.
WU Ke-chuan1，TAO Zhong1，WEI Guang-lan1，HU Da-zhu2,3，YU Wen-zheng1. Research on additional damping ratio calculation of buckling-restrained brace structure and its variety law under earthquake. JOURNAL OF VIBRATION AND SHOCK, 2016, 35(2): 146-152.
[1] 王维凝,阎维明,彭凌云. 不同水准地震作用下铅消能器附加给结构的有效阻尼比及其设计取值研究[J]. 工程力学,2014, 31(3):173-180.
WANG Wei-ning , YAN Wei-ming , PENG Ling-yun. Study on the additional damping ratio provide by lead dampers and its design values under different seismic levels[J].Engineering Mechanics,2014, 31(3):173-180.
[2] 巫振弘,薛彦涛,王翠坤,等. 多遇地震作用下消能减震结 构附加阻尼比计算方法[J]. 建筑结构学报,2013, 34(12): 19-25.
WU Zhen-hong , XUE Yan-tao , WANG Cui-kun , et al .Research on additional damping ratio calculation methods under frequent earthquake[J].Journal of Building Structure,
2013, 34(12): 19-25.
[3] 周锡元,闫维明,杨润林. 建筑结构的隔震、减振和振动控制[J]. 建筑结构学报, 2002, 23(2): 2-12.
ZHOU Xi-yuan , YAN Wei-ming , YANG Run-lin . Seismic base isolation,energy dissipation and vibration control of building structures[J]. Journal of Building Structures,2002, 23(2): 2-12.
[4] Constantinou M C, Symans M D. Experimental study of seismic response of buildings with supplemental fluid dampers[J]. Structural Design of Tall Buildings, 1993,2(2): 93-132.
[5] 李爱群. 工程结构减振控制[M]. 北京: 机械工业出版社, 2007: 114-150.
[6] JGJ 297-2013, 建筑消能减震技术规程[S].
[7] ATC33,NEHRP commentary on the guidelines for the seismic rehabilitation of buildings(FEMA273)[S]. Washington：FEMA,1997．
[8] Brow A P ,Aiken D I , Jafarzadeh F J . Bucking restrained braces provide the key to the seismic retrofit of the wallace F.bennett federal building[J]. Modern Steel Construction ,
2001 , 27(3):36-42.
[9] 高杰，徐自国，任重翠，等.北京市轨道交通指挥中心（二期）屈曲约束支撑设计及动力弹塑性分析[J]. 建筑结构学报,2014,35(1):56-62.
GAO Jie,XU Zi-guo,REN Chong-cui,et al.Beijing rail transmit command center (phase Ⅱ) energy dissipation technology and dynamic elasto-plastic analysis[J].Journal of Building Structure,2014,35(1):56-62．
[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: 86-89．
[11]FEMA 356, Prestandard and commentary for the seismic rehabilitation of buildings [S]. Washington, D.C: Federal Emergency Management Agency, 2000.
[12]上海蓝科建筑减震科技有限公司. TJ屈曲约束支撑设计手册（第四版）[M]. 上海: 上海蓝科建筑减震科技有限公司,2011: 10-15.
[13]GB50011-2010,建筑抗震设计规范[S].
[14]尹帮辉,王敏庆,吴晓东. 结构振动阻尼测试的衰减法研究[J]. 振动与冲击,2014, 33(4): 100-106.
YIN Bang-hui , WANG Min-qing , WU Xiao-dong . Decay method for measuring structural vibration damping[J]. Journal of Vibration and Shock, 2014, 33(4): 100-106.
