【作者】 孙健杰； 裴星洙；

【Author】 SUN Jianjie;PEI Xingzhu;Shanghai MCC 20 Constrution Co.,Ltd.;School of Civil Engineering and Architecture,Jiangsu University of Science and Technology;

【机构】 上海二十冶建设有限公司； 江苏科技大学土木工程与建筑学院；

【摘要】 消能减震结构就是在结构的某些部位设置消能装置,消耗大量地震带来的能量,来减小主结构的地震反应。本文以附加金属阻尼器的减震结构为研究对象,考虑等效阻尼比的计算方法,建立体系的振动微分方程,编制电算程序,以刚度比f_k为参数,原结构周期T_f为自变量进行弹塑性时程分析,讨论质点的位移反应和加速度反应,得到如下结论:1)原结构周期越小、刚度比越大,附加阻尼器结构的位移减震效果越好,2)当f_k为1～6时,附加阻尼器后结构的加速度反应值都能减小,且刚度比f_k=4时,减小最明显;但当f_k为7～10时,加速度反应值并未全部减小。更多还原

【Abstract】 The energy dissipation structure is set up in certain parts as energy dissipation device,which consumes most energy caused by the earthquake to reduce the seismic response of structures.Based on the study of additional metal dampers and generating calculation method of equivalent damping ratio,vibration differential equations and computer programs were established.Taking damping ratio fk as a parameter and structure period Tf as a independent variable for elastic-plastic time history analysis,change rules of the particle displacement and the absolute acceleration response value were discussed.Thus the following conclusions were obtained:1) The smaller structure period and the larger stiffness ratio will lead to the better displacement damping effect.2) When fk was at the range of 1 to 6,acceleration response value decreased and gained the smallest value as fk was 4;when fk was at the range of 7 to 10 acceleration response value did not decrease all the time.更多还原