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随着我国铁路桥梁建设事业的迅速发展,预应力混凝土简支梁在新旧线上的桥梁中所占比例越来越大,而且最大跨度也将由31.7米发展到40米,这就相应地需要制造出既能架跨度31.7米以下的预应力混凝土梁,也要能架跨度40米梁的架桥机。然而,对设计和制造这种能架这样大跨度预应力混凝土桥梁的架桥机,在
With the rapid development of China’s railway bridge construction, the proportion of prestressed concrete simply supported beams in old and new lines is increasing, and the maximum span will also be from 31.7 meters to 40 meters, which accordingly needs to be manufactured Extruded not only can span 31.7 meters below the prestressed concrete beams, but also to span the bridge span of 40 meters beam machine. However, for the design and manufacture of such erection machines capable of supporting such large-span prestressed concrete bridges,