异形截面轻钢EPS混凝土剪力墙抗震性能试验研究  

Experimental Study on Seismic Behavior of Light Gauge Steel Reinforced EPS Concrete Shear Walls With Irregular Section

作　　者：崔成臣[1,2,3] 黄强[1,2,3] 李东彬[1,3] 李红超[1,3] 王建军[1,3] 

机构地区：[1]中国建筑科学研究院,北京100013 [2]清华大学土木工程系,北京100084 [3]中国建筑技术集团有限公司,北京100013

出　　处：《建筑科学》2016年第3期40-45,共6页Building Science

基　　金：国家"十二五"科技支撑计划项目"标准化绿色建筑研究与工程示范"(2012BAJ10B04)

摘　　要：轻钢EPS混凝土剪力墙由轻钢骨架和EPS混凝土组合而成。为研究异形截面轻钢EPS混凝土剪力墙的抗震性能,分别对轴压比为0.4、剪跨比为1.5的T形、L形和一字形剪力墙进行拟静力试验,研究其在水平往复荷载作用下的破坏机理、滞回性能、延性以及耗能能力等。试验结果表明:T形、L形剪力墙的破坏形式为腹板墙斜裂缝和竖向裂缝贯通的剪切破坏;腹板墙与翼缘墙没有出现脱离现象,说明腹板墙与翼缘墙的连接可靠;与一字形剪力墙相比,T形和L形剪力墙的极限承载力分别提高了13.6%和16.1%,说明翼缘墙对构件抗侧承载力的提高具有一定贡献;T形和L形墙体的延性系数分别为8.65和6.37,表现出良好的变形能力。In order to study the seismic performance of the shear wall with irregular section which is composed of light gauge steel and expanded polystyrene（ EPS） concrete,T-shaped,L-shaped and I-shaped specimens with the aspect ratio 1. 5 and designed axial compression ratio 0. 4 are tested under cyclic reversed loads. The failure mode,hysteretic behavior,ductility and energy dissipation performance of those composite walls are analyzed. The test results indicate that the diagonal cracks and vertical cracks developed through the web is leading to the shear failure of the specimens. The connection between the flange and the web is validated by no failure occurring at the junction. Compared with the I-shaped specimen,the peak bearing capacities of the T-shaped and L-shaped specimens increase 13. 6% and 16. 1% respectively,which show that the flange contribute to the lateral loading capacity of the wall. The T-shaped and L-shaped specimens exhibit good deformation ability with the ductility factor8. 65 and 6. 37,respectively.

关 键 词：轻钢 EPS混凝土 T形截面 L形截面 抗震性能 

分 类 号：TU398.2[建筑科学—结构工程]