The paper indicates the common calculation models of the upper structures of the reinforced concrete and prestressed concrete box girder bridges bearing st. Venant torsion, analyzes and explores their applied conditions and the problems, and achieves relative conclusions, so as to provide the scientific reference for the engineering practice.%简述了钢筋混凝土和预应力混凝土箱梁型桥上部结构承受圣维南扭转时几个常见的计算模型,并对其适用条件及存在问题进行了分析探讨,得出有关结论,从而为工程实践提供科学依据。
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