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提出了小扭弯比情况下箱形截面预应力混凝土构件在弯、剪、扭共同作用下的板－桁模型计算方法，按照力的平衡、变形协调及材料本构关系等，建立了相应的计算方程，并编制了全过程分析的电算程序。通过对试验资料的验证，符合情况良好。对预应力、箱形截面翼缘及构件力素比的影响进行了分析。
The plate-enthalpy model calculation method for box-section prestressed concrete members subjected to bending, shearing and twisting under small twist-bending ratio is proposed. According to the force balance, deformation coordination and material constitutive relation, etc. Calculate the equation and compile the computer program for the whole process analysis. Through the verification of the test data, it is in good condition. The effects of prestressing, box section flanges and component force ratio were analyzed.