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(一) 梁的架设問題: 目前鋼筋砼梁的跨度已发展到31.7m需用130t架桥机架设。同时由于过去一般桥墩頂帽尺寸过小。施工单位都选用拨道法架梁。这种方法架設起来比较快,但是由于需採用曲綫架梁的平衡重且有偏儎,因而使有些跨度的梁和較大跨度的梁配合使用于周-桥梁且採用拨道法架梁时,这些跨度往往加固过甚。从設計观点看来,架桥机儎重属于临时性荷儎。为它而增加很多材料颇不合算。因此需要研究一种合适的架桥方法。通过成都召开的桥梁专业会議和武汉召
(A) the erection of the beam problem: At present, the span of reinforced concrete beams has been developed to 31.7m need 130t bridge machine set up. At the same time due to the past the general size of pier caps too small. Construction units are used to select the law beam. This method is quicker to set up, but due to the need to use the curved frame girder balance weight and partial 因, so that some of the span of the beam and the beam with a larger span of the bridge - These spans are often reinforced. From the design point of view, bridging machine weight belongs to a temporary load. For it to add a lot of material is not cost-effective. Therefore, we need to study a suitable bridging method. Through the bridge in Chengdu held a professional meeting and called Wuhan