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针对砌体填充墙框架结构在地震作用下的受力特点,结合汶川地震,分析了填充墙框架结构产生震害的主要原因。建立了填充墙简化分析的等效双压杆模型。着重研究了地震荷载作用下,填充墙对框架性能的影响。结果表明,砌体填充墙对提高结构的抗侧刚度和强度有一定的作用,改变了框架结构塑性铰的分布和发展水平。同时也表明,砌体填充墙在地震作用时有一定的耗能能力。
In view of the force characteristics of the frame wall structure under the action of earthquake and the Wenchuan earthquake, the main causes of the seismic damage to the frame structure of infilled walls are analyzed. An equivalent double-strut model of infilled wall analysis was established. The effect of the infill wall on the performance of the frame is mainly studied under the action of earthquake load. The results show that the masonry infill wall has certain effect on improving the lateral stiffness and strength of the structure and changing the distribution and development level of the plastic hinge of the frame structure. At the same time, it also shows that the masonry infilling wall has some energy-dissipation capacity when the earthquake is acting.