钢筋混凝土带暗支撑筒体抗震性能试验研究

Experimental study on seismic performance of RC core wall with concealed bracings

钢筋混凝土筒体是高层建筑中最主要的抗侧力体系,目前对钢筋混凝土筒体的试验研究较少,且提高筒体抗震性能的措施研究方面更少。在暗支撑剪力墙研究的基础上,本文进一步提出了钢筋混凝土带暗支撑筒体,通过1个1/6缩尺的带暗支撑筒体与1个普通筒体的低周反复荷载试验,对比分析破坏特征、承载力、刚度、延性、滞回特性、耗能能力及钢筋应变。试验表明,与普通核心筒体相比,带暗支撑筒体的抗震耗能能力显著提高,抗震性能明显改善。

In high buildings,RC core wall serve as main component that resists lateral force.There has been little experimental study on RC core wall,and so as the study on measures of improving the seismic performance of RC core wall.In this paper,firstly,on the basis of supporting research on RC shear wall with concealed bracings,RC core wall with concealed bracings is put forward.Secondly,through the experimental study on one 1/6 scale core wall with concealed bracings and one 1/6 scale normal core wall under low cyclic loading,effects of concealed bracings on failure phenomena,bearing capacity,stiffness,ductility,energy dissipation,hysteresis property and steel strain of reinforced concrete core walls are discussed.The experiment shows that the ability of energy dissipation of the RC core walls with concealed bracings is enhanced remarkably,and the seismic performance of the RC core walls with concealed bracings is improved greatly.