拱桥吊杆更换桥面位移控制研究

DISPLACEMENT CONTROL OF BRIDGE DECK WITH SUSPENDER REPLACEMENT OF ARCH BRIDGE

为研究使用兜吊法进行拱桥吊杆更换过程的安全性,提出一种简化桥面位移计算方法。通过采用理论计算方法对拱桥吊杆更换方案进行研究,并于桥面位移实测值进行对比。结果表明计算值与实测结果拟合较好,该计算方法简单易行,精度高,可用于拱桥吊杆的拆除。

To study the safety of replacing the suspenders of arch bridges by the pocket hanging method,a simpli⁃fied calculation method of bridge deck displacement is proposed.Through the theoretical calculation,the replace⁃ment scheme of the suspender of the arch bridge is studied and compared with the measured displacement of the bridge deck.The results show that the calculated values fit well with the measured results.The calculation method is simple and easy,with high accuracy,and can be used to dismantle the suspenders of arch bridges.