文章介绍了南浦大桥西引桥简支预应力混凝土曲线箱梁的结构设计特点、箱梁施工工艺及箱梁的预应力张拉。箱梁张拉采用应力与伸长值双控。试验结果表明,曲线箱梁设计合理,预应力工艺正确、箱梁预制时侧向稳定性良好、张拉后的箱梁预拱度与设计值较吻合。 The paper introduces the structural design features of the simply supported prestressed concrete curved box girder of the West Approach Bridge of Nanpu Bridge, the box girder construction process and the prestressing tension of the box girder. Box girder tension and elongation using double-controlled stress. The test results show that the design of curved box girder is reasonable and the prestressing technology is correct. The lateral stability of the box girder is good when the box girder is prefabricated. The pre-camber of the box girder after tensioning is in good agreement with the design value.