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法国留尼旺岛南部的平原之臂大桥为280m的单跨桥梁,桥梁两端与大型重力式桥台固结,主梁采用预应力混凝土顶、底板和钢桁架式腹杆组合结构体系,在合龙段处仅顶板是连续的。该桥采用单悬臂挂篮法施工,利用桥台自重平衡悬臂重力,并将所有顶板纵向预应力束锚固在桥台背后;采用对顶措施实施合龙,使结构具有桁架拱效应。该桥造型简洁优美,施工细节独具匠心,具有创新性。
France, the southern arm of the Reunion island plain bridge 280m single-span bridge, both ends of the bridge and large gravity bridge abutment consolidation, the main girder using prestressed concrete roof, floor and steel truss-type web combination system, in the Closure section only roof is continuous. The bridge construction by single cantilever method, the use of self-balancing bridge abutment gravity balance cantilever, and all the roof longitudinal prestressing beam anchored behind the abutment; the implementation of the top measures to achieve closure, so that the structure has a truss arch effect. The bridge is sleek, sleek, with distinctive construction details and inventiveness.