福泉高速公路福州连接线乌龙江特大桥方案设计

介绍乌龙江特大桥的方案设计．根据有关要求和桥址水文地质自然条件，主跨采用下承式预应力系杆钢管混凝土拱．由于建筑高度低，因而可压低引桥及路堤高度，缩短桥长，节约投资．引桥上部结构采用部分预应力混凝土设计，下部结构采用桩柱直接支承大梁，结构合理经济

The Introduction of Tendering Design Precept of Wulongjiang Bridge on Fuzhou-Quanzhou Freeway

The design plan of Fuzhou Wulongjiang bridge is introduced in this paper. The main bridge is a through prestressed bowstring concrete-filled steel tubular arch bridge based on the demand of investment office and the natural conditions of the bridge site and hydrological geology. It has the advantages of dexterous model, advanced technique, convenient construction and low cost, and it can lower the height of approach bridge and embankment to shorten the length of bridge because of its low construction height. The superstructure of approach bridge is design by partial prestressed concrete and the substructure of approach bridge is designed by beams supported directly on the piles. It is economical and reasonable in structure.