不中断交通条件下钢管拱桥吊杆更换施工技术

Construction and control techniques for replacement of suspender of CFST arch bridge without stopping traffic

不中断交通条件下,传统的钢管混凝土拱桥吊杆更换技术已不满足安全要求,为保证拱桥吊杆更换时结构安全、交通安全和施工安全,介绍了一种钢拱桥更换吊杆用的工具吊杆装置及其更换方法;分析了该装置的结构组成、实施原理、使用方法、技术特点及适应范围等核心要点,解决了不中断交通条件下钢管混凝土拱桥吊杆更换的技术难题。

The traditional suspender replacement technology has not meet the safety requirements of CFST arch bridge without stopping traffic.This paper introduces a tool derrick device and its replacement method for steel arch bridge.The key points of the device,such as structure composition,implementation principle,application method,technical characteristics and adaptation range,are introduced.The technical problem of replacing suspender of concrete-filled steel tube arch bridge without interrupting traffic is solved.