Despite numerous studies on seismic performance of masonry infilled reinforced concrete frames have been conducted, experimental study on effect of type of lateral load on masonry infilled reinforced concrete frames is sparse. This paper investigates the seismic performance of masonry infilled reinforced concrete frames with different aspect ratios subjected to monotonic and cyclic loadings. Six half-scale, single-storey, single-bay frame specimens designed according to code provisions commonly adopted in Malaysia were tested. Behaviours of frames were assessed based on observed failure modes, strength, stiffness, ductility and energy dissipation capacity. Experimental result reveals that typical infilled frame in Malaysia has high tendency to fail under shear on columns. Type of loading does not affect strength of both bare frames and infilled frames. However, the drift to reach peak strength drops about 40–52% for infilled frames subjected to cyclic loading as compared to monotonic loading. Initial stiffness of infilled frames is found elevated with slower stiffness degradation under the influence of cyclic loading. Ductility of infilled frames subjected to cyclic loading is 48% higher than those subjected to monotonic loading, regardless of aspect ratio. A total of 84% increase in energy dissipation is observed with 60% of increment in bay length.

中文翻译：

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单调和循环荷载作用下无钢筋砌体填充钢筋混凝土框架的试验评价

尽管已经对砌体填充钢筋混凝土框架的抗震性能进行了大量研究，但关于侧向荷载类型对砌体填充钢筋混凝土框架的影响的试验研究却很少。本文研究了不同纵横比的砌体填充钢筋混凝土框架在单调和循环荷载作用下的抗震性能。测试了根据马来西亚普遍采用的规范规定设计的六个半比例、单层、单间框架样本。基于观察到的失效模式、强度、刚度、延展性和能量耗散能力评估框架的行为。实验结果表明，马来西亚典型的填充框架在柱上的剪切作用下很容易失效。加载类型不影响裸框和填充框的强度。然而，与单调加载相比，承受循环加载的填充框架达到峰值强度的漂移下降了约 40-52%。发现填充框架的初始刚度在循环载荷的影响下随着刚度退化较慢而升高。无论纵横比如何，循环载荷下填充框架的延展性比单调载荷下的框架高 48%。观察到能量耗散增加了 84%，间隔长度增加了 60%。发现填充框架的初始刚度在循环载荷的影响下随着刚度退化较慢而升高。无论纵横比如何，循环载荷下填充框架的延展性比单调载荷下的框架高 48%。观察到能量耗散增加了 84%，间隔长度增加了 60%。发现填充框架的初始刚度在循环载荷的影响下随着刚度退化较慢而升高。无论纵横比如何，循环载荷下填充框架的延展性比单调载荷下的框架高 48%。观察到能量耗散增加了 84%，间隔长度增加了 60%。