某公路旧桥承载能力检测评估研究

Research on Evaluation of Bearing Capacity of an Old Highway Bridge

自改革开放以来,我国基础设施建设得到飞速发展,高速公路里程急剧增长。桥梁作为公路的控制性工程作用不言而喻,但随着运营年限的不断增加,混凝土桥梁的病害及其耐久性问题逐渐暴露出来,成为当前土木工程界的研究热点。大部分旧桥的设计承载能力已不能满足当前重载交通的要求,这些先天不足加剧了桥梁的破坏。如何对现役旧桥的承载能力进行检测评估,是对桥梁进行病害防治、加固补强的前提。文章以某公路旧桥为依托,就混凝土旧桥的检测和承载能力评定的方法进行了研究,具有较大的现实意义和工程应用前景。

Since the reform and opening up,China's infrastructure construction has experienced rapid developmentand highway mileage has increased sharply.It is self-evident that bridges play a controlling role in highway engineering.However,with the continuous increase of operating years,the damage and durability of concrete bridges are gradually exposed,which has become a hot topic in the field of civil engineering.The design bearing capacity of most old bridges can no longer meet the current requirements of heavy-load traffic,and these congenital deficiencies aggravate the damage of the bridge.How to inspect and evaluate the bearing capacity of existing bridges is the precondition of disease prevention and reinforcement.Based on an old highway bridge,this paper studies the detection and bearing capacity evaluation methods of old concrete bridge,which has great practical significance and engineering application prospects.