中文摘要：

为研究密肋复合墙板内钢筋混凝土框格单元结构的力学性能退化机理，对3个不同相对刚度比的框格单元及3个空框格结构进行了1／2比例模型循环加载试验。分析钢筋混凝土框格单元结构的破坏发展过程，探讨了外围框格构件对结构承载能力与变形能力的影响。研究结果表明框格单元结构的破坏顺序与结构相对刚度有关。随着结构相对强度的变化，框内填充砌体表现出不同的破坏模式。压缩变形越大，框格单元结构变形滞后现象越明显。界面缝隙对框格单元结构的初始刚度影响显著，但对峰值承载能力影响较小。经多次加卸载循环后，框格单元结构的峰值承载能力仍远高于对应的空框格结构。当外围框格构件与填充砌体在刚度与强度两方面均匹配时，填充砌体刚度退化较慢。

英文摘要：

In order to investigate the degradation mechanism of the mechanical property of elemental reinforced concrete frames in muhi-ribbed walls, three elemental three identical frames without infill were tested under reinforced concrete frames with different relative stiffness and cyclic load. All the specimens are in the scale of 1：2. The damage process of the specimens is analyzed, and the effects of the peripheral frame members on the load-resisting capacity and deformation behavior are discussed. It is revealed that the cracking sequence of the elemental reinforced concrete frames is closely related to the structural relative stiffness. The failure modes of the infill vary with the structural relative strength. With increase in compressive deformation, the deformation hysteresis becomes more evident. The influence of the interface gap between the infill and the peripheral frame members on the initial stiffness of the elemental reinforced concrete frames is significant, whereas the influence on the peak load-resisting capacity of elemental reinforced concrete frames is relatively small. After several loading loops the load-resisting capacity of the elemental reinforced concrete frames is greater than that of the frames without infill. When peripheral frame members match the infill in terms of both stiffness and strength, degradation of the stiffness of the infill is slow.