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West Gate Bridge - Strengthening of the Concrete Viaducts

机译:西门大桥-加强混凝土高架桥

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The 2.5km long West Gate Bridge comprises an eastern and western concrete approach viaduct,rn871m and 670m respectively long either side of the 848 m long cable stayed steel box girder mainrnspan section. The key objective with the West Gate Bridge Strengthening Project was to increase thernnumber of lanes in each carriageway from 4 to 5 to reduce traffic congestion on the M1 Freeway.rnThis paper describes the elements used to strengthen the concrete viaducts including carbon fibrernreinforcement and additional post-tensioning. An extensive system of temporary platforms wasrnrequired for access to the outside of the box girder. Given the weight of these platforms and thernlimited capacity of the unstrengthened bridge, particular care was required with the staging of thernworks, traffic controls and platform movements.
机译:长2.5公里的西门大桥包括一个东西方高架桥,在848 m长的斜拉钢箱梁主跨段的两侧分别长871m和670m。西门大桥加固项目的主要目标是将每条车道的车道数量从4条增加到5条,以减少M1高速公路上的交通拥堵。本文描述了用于加固混凝土高架桥的要素,包括碳纤维加固和额外的后期加固。张紧。需要一个广泛的临时平台系统来访问箱形梁的外部。考虑到这些平台的重量以及未加固桥梁的有限能力,在进行地下工程,交通管制和平台移动时需要特别注意。

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