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在收集多个梁在低周反复荷载作用下的试验数据和梁端屈服转角计算公式的基础上,综合考虑这些计算公式所包含的参数,并将梁端屈服转角计算公式计算值与试验实测值进行对比。结果表明,这些公式计算值不能与试验结果较好吻合。在综合考虑剪跨比、梁长、材料强度、纵筋直径等因素的基础上,通过归纳提出了新的低周反复作用下的钢筋混凝土梁的梁端屈服转角计算公式。
Based on the experimental data collected under the low cyclic loading and the calculation formulas of the yield angles of the beam ends, the parameters contained in these calculation formulas are comprehensively considered and the calculation formulas of the yield angles of the beam ends are compared with the experimental values comparing. The results show that the calculated values of these formulas can not be in good agreement with the experimental results. Based on the factors of shear span ratio, beam length, material strength, longitudinal reinforcement diameter and so on, a new formula for calculating the yielding angle of the beam end of reinforced concrete beams under the action of low cycle is put forward.