大跨度变曲率无支墩钢拱架混凝土拱桥施工技术

Construction Technology for Concrete Arch Bridge by Application of Long-Span Variable-Curvature Non-Supporting-Pier Steel Arch

结合运城至三门峡公路吴家嘴大桥净跨140 m拱桥的施工实践,对大跨度变曲率无支墩钢拱架的设计与安装、整体横移、砂袋卸架、缆索吊设计与安装、轻型混凝土拱圈灌筑施工等全套技术进行了阐述,并论述了有关设计参数,提出了具体的施工措施,对类似工程有一定的借鉴作用。

In the light of the construction practice in the 140-meter-long Wujiazui arch bridge of Yunsan Expressway, the author studies the design and installation, integrated transversal movement, dismantle, cable lift design and installation, light concrete arch concreting technology of the long-span variable-curvature non-supporting-pier steel arch. This paper elaborates and summarizes all of the technologies used, and gives detailed design parameters and construction measures, which may be referred to in the construction of similar projects.