通航河道各类拱桥拆除综合施工技术研究

Comprehensive Construction Technology for All Kinds of Arch Bridges Demolition on Navigable Channel

基于航道整治过程中老桥改建工程,介绍通航河道各类拱桥老桥拆除施工技术,着重说明不同拱桥结构类型、不同航道等级以及不同作业环境下老桥拆除施工技术的应用。通过分析上承式、中承式和下承式拱桥拆除施工中的关键工序和安全控制措施,并应用空间有限元分析程序,解决了通航河道拱桥拆除施工中的各项难题,形成了完整的拱桥拆除综合施工技术。

Based on the bridge rebuilding project during waterway regulation process,this paper makes a brief introduction of the construction technology of all kinds of old arch bridges demolition on navigable channel,emphasizes the application of old bridge demolition construction technology under different kinds of arch bridges structure,different channel levels and different working environment.Through the analysis of the key working procedure of construction and safety control measures of deck-type,half through and through arch bridge,and the application of the space finite element analysis program,it solves the difficult problems during the construction of arch bridge demolition on navigable channel,and forms a comprehensive construction technology for arch bridge demolition.