《公路钢筋混凝土及预应力混凝土桥涵设计规范》(JTJ023-85)第4.1.22条、第4.1.23条对受扭构件的设计只涉及了矩形截面,而实际工程中经常使用的箱形截面的受扭构件无专门规定。本文在分析了第4.1.22条的公式理论原理之后,指出箱形截面不能直接套用矩形构件的公式,并提出了相应的计算办法。 Article 4.1.22 and Article 4.1.23 of the Code for Design of Highway Reinforced Concrete and Prestressed Concrete Bridges and Culverts (JTJ023-85) refer only to the rectangular section in the design of torsion members, while the box section The torsion member without special provisions. After analyzing the theoretical principle of formula 4.1.22, this paper points out that the formula of box member can not be directly applied to rectangular members, and the corresponding calculation method is put forward.