本文针对预应力混凝土连续刚构桥梁现浇箱体高标号混凝土的抗压性能以及预应力施加时间,结合西游洞特大桥的工程实践,以大量试验数据为依据进行了较全面的分析。研究表明,在原材料合适、配合比选择合理的前提下,7天的强度和弹性模量完全可以达到规范要求。 In this paper, according to the compressive properties of concrete and the prestressing time of prestressed concrete cast-in-situ box concrete continuous rigid frame bridge, combined with the engineering practice of Xiyuantong Bridge, a more comprehensive analysis based on a large number of test data. The research shows that the strength and elastic modulus of 7 days can meet the standard requirements under the premise of proper raw materials and reasonable mix selection.