介绍了中承式钢筋混凝土拱桥吊杆更换的主要监控工作,包括原吊杆拉力的确定,吊杆更换过程临时吊索与新吊杆张拉力的考虑,拱肋和桥面标高及应力的计算分析和现场测试分析,后续吊杆的更换对已更换吊杆的拉力影响等工作,为吊杆更换的安全和顺利进行提供了有力保证。 The main monitoring work of replacement of suspender of the reinforced concrete arch bridge is introduced, including the determination of the tension of the original suspender, the consideration of the temporary sling of the suspender replacement and the tension of the new suspender, the calculation of the elevation and stress of the arch rib and deck Analysis and on-site test and analysis, the subsequent replacement of the boom has been replaced by the impact of the boom and other work, for the safe and smooth boom replacement provides a powerful guarantee.