用“释能法”提高中心桥承载力的研究与实践

Study and practice of increasing the bearing capacity withenergy releasing method

以重庆中心桥采用"释能法"新技术提高荷载等级为工程背景,对中心桥加固前后分别进行了荷载试验,并对试验结果进行了研究分析。研究结果表明,采用"释能法"加固后的中心桥受力状况明显改善,承载力大幅度提高,从而证明用"释能法"加固并提高旧危拱桥的承载力是完全可行且效果显著。

In the view of background for increasing the bearing capacity of Zhongxin Bridge in Chongqing City with a new energy releasing technique,the loading tests on the this bridge were carried out before and after strengthened with analysis on the testing results.The study results have shown that the stress conditions of the bridge had been obviously improved after having been strengthened,with improvement of bearing capacity by a big margin.It has been proven that strengthening of the old,dangerous arch bridge is feasible totally and brings about a striking effect.