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提出了一种上、下由普通钢板焊接的刚度较大的约束板、中部核心耗能区段由退火热处理后的普通钢板制作的墙柱型剪切耗能装置。完成了不同加劲肋方式的8个足尺试件的拟静力试验,并从滞回曲线、承载力、延性等方面分析耗能装置的抗震性能。研究表明:该装置具有初始刚度大、承载力高和耗能性能优良等特点;改变中间耗能区段上的加劲肋方式和尺寸,有助于改善钢板剪力墙的承载力和刚度,延缓并减轻滞回曲线中的“捏缩效应”;当耗能装置丧失承载力,大多会出现中部耗能区段的局部小区格内钢板疲劳开裂、中部耗能板整体出现面外屈曲失稳、板角焊缝被撕裂等现象。
A kind of wall-column shearing energy dissipation device made of ordinary steel plate after annealing and heat treatment was proposed. Quasi-static tests of eight full-scale specimens with different stiffeners were completed and the seismic performance of energy-dissipating devices was analyzed from the aspects of hysteresis curve, bearing capacity and ductility. The results show that the device has the characteristics of high initial stiffness, high bearing capacity and excellent energy dissipation. Changing the mode and size of the stiffeners in the middle energy dissipation section can help to improve the bearing capacity and stiffness of the steel plate shear wall and delay And reduce the “pinch-in effect” in the hysteresis curve. When the energy-dissipating device loses its bearing capacity, most of the fatigue cracks will occur in the local cells in the central energy-consuming section, and the total out-of-plane buckling loss Steady, fillet weld was torn and so on.