钢筋混凝土构件一般均为带裂缝工作,当其出现宏观裂纹后,随着荷载的增加,裂纹迅速发展,导致构件力学性能逐渐恶化并最终破坏。根据钢、混凝土的各自优点,提出了在混凝土结构的受拉侧局部设置增强钢板的构想。并依据重庆万盛藻渡大桥主拱拱脚区段受力特点对此种结构进行了试验研究。结果表明,混凝土结构的受力性能得到了明显改善,具有了良好的延性,且有方便施工、经济省材等优点。 Generally, the reinforced concrete members work with cracks. When the macroscopic cracks appear, the cracks develop rapidly with the increase of the load, which leads to the deterioration of the mechanical properties of the members and eventually the failure. According to the respective advantages of steel and concrete, the conception of setting reinforced steel plate locally on the tension side of concrete structure is proposed. The structure of this kind of structure was tested based on the force characteristics of the arch section of the main arch of Chongqing Wansheng algal bridge. The results show that the mechanical properties of concrete structures have been significantly improved, with good ductility, and has the advantages of convenient construction, economical and economical.