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新建铁路大瑞线大保段澜沧江特大桥为全长528.1m,主跨为342m上承式劲性骨架钢筋混凝土提篮拱桥,劲性骨架为钢管拱结构,采用二次竖转方案施工,用于拱肋吊装的主要起重设备缆索吊机吊重2×35t,主跨698m,大理岸塔高40m,瑞丽岸塔高16m。文章论述了缆索吊机塔架及后锚结构充分利用地形、地质条件,选择受力合理、经济、安全的结构形式的有效措施。
The new railway line DaRui Line Lancangjiang Grand Bridge is a total length of 528.1m, the main span of 342m on the support of the framework of reinforced concrete basket arch bridge, steel skeleton structure of steel arch structure, the use of the second vertical construction program for Hoisting of the main arch hoisting equipment cable crane hoisting 2 × 35t, the main span 698m, Dali shore high 40m, Ruili shore tower high 16m. The paper discusses the effective measures of making full use of the topography and geological conditions of the cable crane tower and the rear anchor structure, and selecting reasonable, economical and safe structural forms.