中文摘要：

对三根U型截面腹板预制装配式型钢混凝土梁进行低周反复荷载试验．分析其滞回曲线、骨架曲线、延性、强度衰减规律、刚度退化规律及耗能，研究不同剪跨比和不同现浇部分混凝土强度对PSRC梁抗震性能的影响。试验结果表明．剪跨比对PSRC梁的破坏特征影响较大；现浇部分混凝土强度能够提高试件的承载力及初始刚度，对变形能力及耗能性能影响较小；通过理论分析建立了PSRC梁屈服承栽力计算公式。

英文摘要：

The low cyclic loading tests of three Prefabricated Steel Reinforced Concrete （PSRC）beams with U section i is carried out. The hysteretic curves, skeleton curves, ductility, strength attenuation, stiffness degradauon and energy dissipation are analyzed. The influence of shear span ratio and concrete strength in the cast-in-place area on the seismic behavior of PSRC beams is studied. The results show that the shear span ratio has a greater influence on the failure characteristics of PSRC beams. The concrete strength in the cast-in-place area improves the bearing capacity and initial stiffness of the specimen, but has little influence on deformation capacity and energy dissipation. Further, the formula of the yield bearing capacity of PSRC beam is established by theoretical analysis.