随着国内大量吊杆拱桥服役时间接近吊杆更换年限,多数拱桥需进行吊杆更换施工。本文以健跳大桥为例比选拱肋兜吊和桥面兜吊方案的优缺点,提出大跨径吊杆拱桥更换方案实施思路。 With a large number of domestic boom arches close to the service life of the boom replacement, the majority of the need for suspension bridge replacement construction. Taking Jianjiao Bridge as an example, this paper compares the advantages and disadvantages of the arch drooping and the bridge dangling proposal, and puts forward the idea of ​​the replacement plan for the long-span suspension bridge.