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11月15日10时18分,大瑞铁路澜沧江特大桥钢管拱实现高精度合龙。 傅林海摄。

11月15日10时18分,大瑞铁路澜沧江特大桥钢管拱实现高精度合龙。 傅林海摄。

11月15日10时18分,大瑞铁路澜沧江特大桥钢管拱实现高精度合龙。 傅林海摄。

11月15日10时18分,大瑞铁路澜沧江特大桥钢管拱实现高精度合龙。 傅林海摄。
原标题:大瑞铁路“咽喉”澜沧江特大桥钢管拱合龙
央视网消息:15日上午,世界上第一次采用“二次竖转”工法施工的大桥——新建大瑞铁路澜沧江特大桥钢管拱实现高精度合龙。
澜沧江特大桥是新建大理至瑞丽铁路大保段的“咽喉”工程,大桥横跨澜沧江两岸,位于我国地形最为复杂的横断山脉西段,全长528.1米,主跨342米,为上承式劲性骨架钢筋混凝土提篮拱桥。全桥共用混凝土8.5万立方米,主体结构共用钢量约1.4万吨,共用高强螺栓11.52万套。
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