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阐述了软土地区预应力管桩在系杆拱桥箱梁支架基础中的应用。重点讲述了软土地区系杆拱桥箱梁支架及基础的施工流程、操作要点以及取得的效益。实践证明,在软土地区系杆拱桥箱梁支架基础施工中,用预应力管桩取代钻孔灌注桩或钢管桩,施工速度快,没有泥浆污染,成本降低,具有非常明显的经济与社会效益。
The application of the prestressed pipe pile in the soft soil area in the foundation of the box girder of the tied arch bridge is expounded. The construction process, operation points and benefits of the tied-arch bridge box girder support and foundation in soft soil area are mainly described. Practice has proved that in soft soil area tied arch bridge box girder foundation construction, the use of prestressed pipe piles instead of bored piles or steel pipe piles, construction speed, no mud pollution, reduce costs, with a very obvious economic and social benefit.