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框架-密肋复合墙结构是由框架与框架-密肋复合墙体组成的一种新型双重抗侧力结构。利用试验方法对该结构体系主要受力构件——框架-密肋复合墙体的抗震性能开展研究。在已有相关研究工作基础上,对1/2比例RC框架-井字形复合墙体、SRC框架-井字形复合墙体和空框格框架进行低周反复荷载试验,分析框架-复合墙体的破坏过程和滞回曲线特点,研究墙体的承载力、刚度、延性及耗能能力等,并与已有框架-十字形复合墙体等试验结果进行对比。试验结果表明:框架-密肋复合墙体具有较好的协同工作性能与双重受力特点,其受剪承载力、刚度、耗能性能均明显优于普通框架及填充墙框架,内部密肋复合墙板始终有效分担外荷载,墙体在后期大位移循环阶段的延性和承载力较好,具有良好的抗震性能。
Frame - The multi-ribbed composite wall structure is a new type of double anti-side force structure composed of frame and frame-ribbed composite wall. The test method is used to study the seismic performance of the main force-frame-ribbed composite wall of the structural system. Based on the existing research work, low-cycle repeated loading tests are carried out on the 1/2 RC frame-well-shaped composite wall, SRC frame-well-shaped composite wall and hollow frame, Failure process and hysteresis curve. The bearing capacity, stiffness, ductility and energy dissipation capacity of the wall are studied. The results are compared with those of the existing frame-cruciform composite wall. The test results show that the frame-ribbed composite wall has better synergistic working performance and double force characteristics, and the shear strength, stiffness and energy dissipation performance of the frame-ribbed composite wall are obviously better than those of ordinary frame and infill wall frame. The wall panels always share the external load effectively. The wall has good ductility and bearing capacity in the later stage of large displacement cycle, and has good seismic performance.