由于设计荷载标准较低和当时的建设条件限制,上世纪六七十年代修建的拱桥在运营过程中因大交通流量和超载车辆的作用,已产生不同程度的损坏,不能满足车辆安全通行要求,需拆除重建。文章以京杭运河宿迁一号桥拆除工程为例,对其施工方案和施工工艺的选择进行了详细的研究,为大桥安全拆除提供了保证,也为其他桥梁拆除提供了经验参考。 Due to the low design load standard and the restriction of the construction conditions of the time, the arch bridge constructed in the 1960s and 1970s has suffered different degrees of damage due to large traffic flow and overloaded vehicles during operation, failing to meet the requirements of traffic safety, Need to dismantle and rebuild. Taking the dismantling project of Suqian No.1 Bridge on Beijing-Hangzhou Canal as an example, the article makes a detailed study on the selection of its construction scheme and construction technology, provides a guarantee for the safe dismantling of the bridge and also provides the experience reference for the dismantlement of other bridges.