不同连梁跨高比混凝土核心筒抗震性能试验研究  

Experimental study on seismic behavior of reinforced concrete core walls with various span-depth ratio of coupling beam

作　　者：杜修力[1] 贾鹏[1] 赵均[1] 

机构地区：[1]北京工业大学建筑工程学院,北京100022

出　　处：《建筑结构学报》2008年第S1期5-9,共5页Journal of Building Structures

基　　金：北京市教委与北京市自然科学基金联合重点项目(KZ200410005003)

摘　　要：为了进一步研究钢筋混凝土核心筒体的抗震性能,对两个钢筋混凝土核心筒试件进行了水平低周反复荷载试验,重点研究不同连梁跨高比下核心筒的破坏机理、承载能力、耗能能力、延性、剪力滞后等方面的抗震性能。发现核心筒试件最后均为底部发生整体弯曲破坏,随着连梁跨高比从1.7下降到0.9,核心筒试件的刚度和承载能力有明显提高,但同时延性性能和耗能能力显著下降。分析表明,连梁跨高比对钢筋混凝土核心筒的抗震性能有较大影响。In order to further study the seismic behavior of reinforced concrete core wall,two reinforced concrete core wall specimens were built and tested to failure under the combined action of constant axial load and reversed cyclic lateral load.The span-depth ratio of coupling beam on each core wall was focused on.This paper presents the results,including failure mode,hysteretic behavior,load-carrying capacity,ductility,energy dissipation ability,shear lag effect.The final overall bending damage occurred at the bottom of each specimen.With the span-depth ratio of coupling beams dropping from 1.7 to 0.9,stiffness and load-carrying capacity of the specimen had risen markedly,but the ductility performance dropped significantly.It can be seen that the span-depth ratio of coupling beam has important effect on the seismic behavior of reinforced concrete core wall.

关 键 词：连梁 荷载试验 抗震性能 混凝土核心筒 

分 类 号：TU973.17[建筑科学—结构工程]