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兰溪大桥为多跨钢管砼肋式拱桥，本文讨论此类桥梁的总体布置，设计方法和构造特点，以及该桥主要材料数量与材料用量指标
The Lanxi Bridge is a multi-span steel pipe ribbed arch bridge. This article discusses the overall arrangement, design method and structural characteristics of this type of bridge, and the main material quantity and material usage index of the bridge.