预弯梁加固技术研究

提出预弯梁进行桥梁构件的加固方法,针对加固前后构件的变形和承载力,采用解析法和数值计算法进行分析。结果表明:预弯梁加固法可以有效提高旧桥承载力60%~70%,构件变形减少,加固效果明显。

RESEARCH ON STRENGTHENING TECHNOLOGY OF PRE-BENDING BEAM

A method of strengthening technology by using pre-bending steel beam is introduced. The analytical method and numerical method are used to analyze the deformation and capacity of the strengthening component before and after reinforcing. The results show that the strengthening technology of pre-bending steel plate beam can improve the old bridge bearing capacity by 60% to 70%,and reduce the deformation of the component. The reinforcement effect of the technique is obvious.