在我国铁路桥梁建设中,钢筋混凝土梁和预应力混凝土梁厂制生产占着很大的比重,这些厂制梁绝大多数都是用架桥机架设的。因此对架桥机的设计和使用进行一些探讨不是无益的。本文拟对解放以来,我国使用过的新旧架桥机作一简单的分析比较,着重对新型架桥机和用以架设40米梁的架桥机的设计,作一点粗略的探讨。一、悬吊式架桥机与桥式架桥机五十年代,我国使用的架桥机都是悬吊式 In China’s railway bridge construction, the production of reinforced concrete beams and prestressed concrete beams account for a large proportion of the factory, most of these factory girders are provided by the bridge frame. Therefore, some discussion on the design and use of bridging machine is not helpless. This article intends to make a simple analysis and comparison of old and new bridge machines used in our country since the liberation, focusing on the design of new bridge machines and erecting machines used to set up a 40-meter beam. First, the suspension bridge and bridge erecting machine In the 1950s, erecting machines used in China are suspended