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本文利用71根约束钢筋混凝土短梁在反复荷载下的试验研究结果,综合分析了剪跨比(跨高比)、梁端上部配筋特征、附加交叉腹筋、垂直与水平分布腹筋、钢纤维、以及剪压比诸参数对短梁的破坏形态、抗弯与抗剪承载力、延性、耗能的影响;同时对提高短梁抗震性能的设计方法进行了研究。最后提出了延性约束钢筋混凝土短梁的抗震设计方法建议。
This paper makes use of the experimental results of 71 confined reinforced concrete short beams under repeated loading, comprehensively analyzing the shear-span ratio (span-height ratio), the characteristics of the reinforcement at the upper end of the beam, the additional cross-web reinforcement, the vertical and horizontal distribution web reinforcement, steel fiber, The effects of shear-pressure ratio parameters on the failure modes, bending and shear capacity, ductility, and energy consumption of short beams were studied. At the same time, the design methods for improving the seismic performance of short beams were studied. Finally, the suggestions for seismic design methods of reinforced concrete short beams with ductile constraints are put forward.