阻尼砌体填充墙框架结构抗震性能试验研究

通过对阻尼砌体填充墙框架、空框架和普通砌体填充墙框架的低周反复加载试验，对比研究阻尼砌体填充墙框架结构的滞回性能、承载能力、变形能力、延性、刚度退化、耗能性能和破坏特征等。结果表明：阻尼砌体填充墙通过砌体单元往复剪切阻尼层参与结构的滞回耗能，具有良好的耗能效果，阻尼砌体填充墙框架结构滞回曲线饱满，耗能能力强，等效黏滞阻尼系数在0.1以上；阻尼砌体填充墙能为框架提供一定的抗侧力和抗侧刚度，但其对框架提供的抗侧刚度和约束效应较普通砌体填充墙大为削弱，避免了框架柱产生剪切破坏；阻尼砌体填充墙框架结构的承载力衰减速率和刚度退化速率明显较普通填充墙框架结构缓慢，极限层间位移角与空框架的基本相同，具有良好的延性和变形能力。

Experimental study on seismic behavior of frame structure with damped infill wall

By the low cyclic reversed loading tests for damped infill wall-frame, bare frame and conventional infill wall-frame, the hysteretic behavior, bearing capacity, deformation capacity, ductility, stiffness degradation, energy dissipation and damage characteristic of damped infill wall-frame were studied comparatively. The results indicate that the damped infill wall contributes to the hysteretic energy of structure with its masonry units shearing the damped layer circularly, and plays good role in energy dissipating. The hysteretic loops of the frame structure with damped infill wall is plumper, the energy dissipation capacity is excellent, the equivalent viscous damping coefficient reaches above 0.1. The damped infill wall is capable of enhancing the lateral force resistance capacity and the lateral stiffness of the frame structure. But its stiffness effect and confined effect is much weaker than that of the conventional infill wall which prevent the frame columns from shear damage effectively. The damped infill wall-frame’ s strength degradation rate and the stiffness degradation rate are much slower than that of the conventionally infill frame. Its ultimate inter-story drift ratio is basically the same as that of the bare frame. The damped infill wall frame has good ductility and deformation capacity.