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艾兰帕克公路跨线桥位于加拿大安大略省渥太华417高速公路上,日均车流量为150 000辆。由于该桥已近使用寿命期限,安大略交通运输局决定封闭交通仅1个晚上,采用快速更换技术对该桥上部结构进行更换。快速更换施工前的准备工作包括预制新桥上部结构、切割旧桥桥台的雉墙、清理雉墙后的砂石。在快速更换过程中,使用自行式模块化运输车移走旧桥上部结构、运送新桥上部结构,新上部结构安装就位后,与旧桥的桥台形成半整体式结构。该跨线桥上部结构历时17 h成功快速更换。
The Highlander Flyover is located on Highway 417 in Ottawa, Ontario, Canada, with an average daily traffic of 150,000 vehicles. Due to the short life of the bridge, the Ontario Department of Transportation decided to close the traffic for only one night, using quick-change technology to replace the superstructure of the bridge. Rapid replacement of the pre-construction preparations, including the prefabricated structure of the new bridge, cut the old bridge abutment pheasant wall, cleaning the pheasant wall behind the gravel. In the process of rapid replacement, the self-propelled modular truck was used to remove the superstructure of the old bridge and transport the superstructure of the new bridge. After the new superstructure was installed in place, the semi-monolithic structure was formed with the abutment of the old bridge. The overpass structure was successfully and quickly replaced in 17 h.