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为了建立能够反映结构或构件动力特性重要参数的恢复力模型,研究带框复合墙体的抗震性能,通过设置不同的试验参数,对5组9个带框复合墙体试件进行了低周反复荷载作用下受力性能的试验研究,并分析了试件的破坏形态。考虑了墙体厚度变化、边框变化和轴压比对试件延性、耗能和强度、刚度退化等的影响,建立了折线型带框复合墙体的恢复力模型。得到不同轴压比、不同墙体厚度和不同边框下的荷载-位移滞回曲线,边框大小、墙体厚度和轴压比对带框复合墙体有着明显的影响,无论是承载力,还是变形性能,两侧混凝土层等厚的墙体组合形式均优于两侧混凝土层不等厚的墙体组合形式;边框面积的增大以及边框配筋的增加,在一定程度上可以大大提高复合墙体的承载能力以及延性、耗能性能;而轴压比越大,墙体的变形能力越差。
In order to establish the restoring force model that can reflect the important parameters of the dynamic characteristics of the structure or component, the seismic performance of the composite wall with frame is studied. By setting different test parameters, The experimental study of the mechanical behavior under load and the failure morphology of the specimen are analyzed. Considering the influence of wall thickness variation, frame change and axial compression ratio on the ductility, energy consumption and strength, stiffness degradation and so on, the restoring force model of the composite wall with a polygonal line is established. Obtained load-displacement hysteresis curves with different axial compression ratios, different wall thicknesses and different bezels, the frame size, wall thickness and axial compression ratio have a significant impact on the composite wall with a box, whether it is bearing capacity, or Deformation performance, both sides of the concrete wall is thicker than the thickness of the wall combination is better than the two sides of the concrete layer of unequal thickness of the wall combination form; border area increases and the frame reinforcement increases, to some extent, can greatly enhance the composite The bearing capacity of the wall and ductility, energy dissipation; and the greater the axial compression ratio, the worse the deformation of the wall.