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一、前言广东清远北江大桥位于107国道上,是我国目前建成的总长最长、带有悬臂墩的单孔跨度最大的钢筋混凝土刚架拱桥.全桥总长1058.04米.主桥上部为8孔净跨70米的刚架拱(悬臂墩中心距82.35米);清远岸和广州岸引桥分别为4孔和3孔净跨45米的刚架拱.下部结构主要为钻孔桩基础,有三个沉井基础、空心桥墩.设计采用3孔或4孔一联的连拱计
I. Introduction Guangdong Qingyuan Beijiang Bridge is located on State Road 107. It is the longest single-span reinforced concrete frame arch bridge with the longest total length and single cantilever pier in our country. The total length of the bridge is 1058.04 meters. The upper part of the main bridge is 8-hole net The span of the frame spanning 70 meters (the center distance of the cantilever piers is 82.35 meters); the Qingyuan shore and the Guangzhou shore approach bridge are 4-hole and 3-way rigid frame arch with net span of 45 meters respectively.The substructure is mainly bored pile foundation with three sink Well foundation, Hollow piers. Design using 3 holes or 4 holes a joint arch meter