By means of the low cycle loading tests on six recycled aggregate concrete (RAC) columns with different proportions, in combination with the Park-Ang two-parameter damage model suitable for ordinary concrete columns and the damage degree D_c of actual structures, the calculated value of cyclic loading coefficient β of recycled aggregate concrete columns was determined. It would be achieved by analyzing the calculated β that the impact of the replacement ratio of recycled aggregate and the content of mixed fibers on β was significantly different. Considering the reinforcement ratio mentioned in paper. Matlab was further employed to fit multivariable linear equation regarding recycled aggregate replacement ratio, mixed fibers contents and reinforcement rate as the basis, so that the computation formula of the cyclic loading coefficient β suitable for recycled aggregate concrete columns was revealed.

通过在六个再生混凝土（RAC）与不同比例的列，低循环载荷试验中具有合适的园昂两参数损伤模型普通混凝土柱和损伤程度的组合装置d _Ç实际结构的，所计算出的确定再生骨料混凝土柱的循环荷载系数β值。通过分析计算得到的β 可以看出再生骨料置换率和混合纤维含量对β 的影响明显不同。考虑到论文中提到的加固比。进一步利用Matlab对再生骨料置换率、混合纤维含量和配筋率的多元线性方程组进行拟合，从而得到适用于再生骨料混凝土柱的循环荷载系数β的计算公式。