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一、概述拱桥承载力大、耐久性好、造型优美,在深谷急流、地质情况较好的地区,拱桥仍是常被选用的桥型方案。但因拱跨愈来愈大,采用常用的几种施工方法,其施工设备、施工用钢量剧增,施工安装也愈加困难,施工费用高,从而使拱桥的竞争能力大大减弱。可见采用大跨径拱桥的关键是施工方法问题。我国在大跨径拱桥施工方法上,做了不
First, an overview Arch bridge carrying capacity, durability, and beautiful shape, deep valleys, geological conditions better area, the arch bridge is still often used in the bridge program. However, due to the increasing span of the arch, several commonly used methods of construction, the construction equipment, construction steel surge, construction and installation is also more difficult, high construction costs, so that the competitiveness of the arch bridge greatly weakened. Can be seen that the key to using large-span arch bridge is the construction method. China’s construction methods in the long-span arch bridge, made no