轻质墙板填充墙钢筋混凝土框架抗震性能试验研究

为研究轻质墙板填充墙钢筋混凝土框架与页岩空心砖砌体填充墙钢筋混凝土框架的抗震性能差异，以及填充墙与框架的连接形式对填充墙框架抗震性能的影响，进行了2榀轻质墙板填充墙钢筋混凝土框架试件和1榀页岩空心砖砌体填充墙钢筋混凝土框架试件在水平单向重复推覆力作用下的加载试验，对试验现象、荷载-位移曲线、刚度退化曲线、塑性转角、剪切变形角、层间位移角和位移延性系数进行分析。研究结果表明：与页岩空心砖砌体相比，轻质墙板与框架协同工作的能力更强；当轻质墙板与框架为柔性连接时，初裂荷载最小，但结构的屈服荷载最大，变形能力也最强；页岩空心砖砌体与框架采用刚性连接时，峰值荷载最小，变形能力也最弱，结构的抗震性能最差；轻质墙板与框架为刚性连接时，峰值荷载最大；L形卡件对轻质墙板偏转可起到一定的约束作用；纤维网防裂带对保护轻质墙板填充墙的作用明显。

Experimental study on seismic performance of RC frames filled with lightweight wallboards

In order to comparatively study the difference of RC frames filled with shale hollow bricks and lightweight wallboards in terms of seismic performance and the influence of wall and frame connection forms on the seismic behavior of structures, seismic performance tests on two frames filled with lightweight wallboards and one frame filled with shale hollow bricks were carried out. Experiment phenomena, relation curves between load and displacement, stiffness degradation curves, plastic deflections, shear deformation angles, inter-story displacement angles and displacement ductility factors of models were emphatically analyzed. The study shows that co-work ability of lightweight wallboards and frames is better than hollow bricks. Frames filled with lightweight wallboards where lightweight wallboards and frame are flexibly connected have the smallest initial crack load among structures, but yield load and deformation capacity of structure are the largest. The peak load where hollow bricks wall is rigidly connected with frame is the smallest, and its deformation capacity is the weakest. When lightweight wallboards and frame have rigid connection, the peak load is the largest. The L shaped connector can play a certain role in restraining the deflection of lightweight wallboards. The anti-crack belt of fiber net has an obvious effect on protecting filler wallboards.