预应力混凝土连续弯箱梁设计分析

Design analysis of theprestressed concrete continuous curve beam using box section

随着城市立交的不断发展,预应力混凝土弯箱梁应用日趋广泛。结合工程实例,对影响预应力混凝土连续弯箱梁设计的一些关键因素进行了参数分析,在对不同参数计算结果进行对比分析的基础上,总结出了适用于预应力混凝土连续弯箱梁设计的一些规律,并提出了改善预应力混凝土弯箱梁受力的一些建议,这些建议在实际工程设计中已经得到应用,并且取得了比较理想的结果,可供类似桥梁结构设计参考。

Prestressed concrete continuous curve beam is widely used with the development of urban interchange.On the basis of designing a prestressed concrete continuous curve beam using box section,how the key factors influence the design is developed in this article.After analyzing the result gained from the different parameters,some rules applicable to the prestressed concrete continuous curve beam using box section are found with some suggestions due to the rules.Practice on the actual project validates that the suggestions are useful;some of them may be referential by engineer in similar bridge structures.