附加或不附加粘滞阻尼墙的RC框架试验与分析

本文阐述了附加或不附加粘滞阻尼墙的2个相同的RC框架模型振动台试验和理论分析的情况.这2个钢筋混凝土框架模型为3层1跨两开间,几何相似关系大致为1：2.将阻尼墙附加到一个RC框架模型当中,先后对附加或不附加阻尼墙的2个相同的RC框架模型进行振动台试验.试验结果表明,阻尼墙有效减小了框架模型的地震反应.对耗能框架模型和普通框架模型进行了弹性和弹塑性时程分析,计算结果和试验结果吻合良好.改变阻尼墙的参数进行分析,结果表明选取合适的阻尼墙参数,才能达到最好的耗能减振效果;适当减小层间位移较小处的阻尼墙参数,对减振效果影响很小而又能节省投资.

Experimental study and theoretical analysis of concrete frames with or without supplemental viscous damping walls

This paper presents a comparative experimental study and theoretical analysis on seismic behavior of two identical concrete model frames with or without supplemental viscous damping walls. The two frames are 1/2-scale three-story, one-bay by two-bay. Shaking table tests of the two frames are carried out with different seismic inputs respectively. The test results show that the responses of the frame with supplemental viscous damping walls are reduced remarkably compared with another undamped one. Elastic and elastoplastic time-history analysis of the structures with or without dampers indicates that the results are consistent with the experiment. Theoretical analysis reveals that the appropriate parameters of damping walls are necessary for structure to obtain optimized response control effect; and the parameters of damping wall in story whose interstory displacement is comparatively small can be reduced properly, and have little effect on the responses of structure but can economize investment.