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技术创新
世界最长钢管桁架梁公路桥竣工
[字号: ]
2012年05月07日
来源:中华建筑报
作者:未知

    

近日,世界上最长的钢管桁架梁公路桥——四川雅(安)泸(沽)高速公路干海子特大桥竣工,它标志着我国艰险山区高速公路桥梁建设的科研与施工取得重大突破。

  位于四川省石棉县境内的干海子特大桥全长1811米,桥宽24.5米,共36跨。它采用钢管混凝土桁架桥梁,最长的连续梁为1044.7米,最高桥墩为107米。干海子特大桥共创造了4项世界第一:第一座最长全钢管混凝土桁架梁桥;第一座最高的钢管混凝土格构桥墩、组合桥墩、混合桥桥墩;同类结构中每联最长的连续结构;第一次全面采用钢纤维钢管混凝土施工。

  与传统的桥梁相比,这种桥型减轻了自身重量,抗震性能良好,减少了桩基数量,节约了资源,减少施工占地。

   

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