危旧双曲拱桥加固方法研究

Research on the Rein forcement Methods for the Old Dangerous Double-arched Bridge

文章以广西民安大桥为例,对双曲拱桥的病害进行了详细调查及原因分析,根据理论计算成果提出了在主拱肋下缘现浇钢筋混凝土的加固方法。该方法可以在不中断交通的条件下进行加固施工,节约了投资,经济效益显著。

With Min-an Bridge of GuangXi Province as an example,the paper has a detail survey and cause analysis on the defect of double-arch bridge and presents a cast-in-place reinforcement method under the main arch rib based on the theoretic calculation result.With this method,reinforcement construction can be conducted without interruption of traffic.It saves cost and produces obvious economic benefit.