半刚接钢框架内填暗竖缝钢筋混凝土剪力墙结构滞回性能试验研究

为了进一步改善半刚接钢框架内填钢筋混凝土剪力墙结构（PSRCW）的抗震性能，将暗竖缝引入PSRCW结构的内填墙中，进行了1榀1∶3缩尺内填墙带暗竖缝PSRCW结构的低周反复荷载试验，研究了带暗竖缝PSRCW结构的破坏机理及滞回性能。试验结果表明：内填墙设置暗竖缝对PSRCW结构的初期刚度影响较小，峰值荷载过后承载力退化缓慢，结构延始性能得到显著改善。带暗竖缝的PSRCW结构通过合理设计可以实现控制结构小震或中震作用下的变形，提供较大的初始抗侧刚度，大震下提供良好的变形能力和耗散地震能量的双重功能。

Experimental investigation of partially-restrained steel frame with concealed vertical slits RC infill walls

In order to improve seismic performance of partially-restrained steel frame with reinforced concrete walls (PSRCW), concealed vertical slits were used in the solid infill walls. The one-bay, two-story test specimen on one-third scale was carried out under low reversed cyclic loading. The failure mechanism and hysteretic behavior of PSRCW with concealed vertical slits were investigated. Experimental studies show that infill walls with concealed vertical slits has little effect on overall elastic stiffness of the specimen, however enhance the structural deformation and ductility. PSRCW with concealed vertical slits can not only provide certain stiffness under the moderate level of earthquake, but also supply enough capacity of deformation and energy dissipation under the rare level of earthquake.