板-桁模型理论计算预应力混凝土构件抗扭强度

Calculating Torsional Strength of the Prestressed Concrete Members with the Plate Truss Model

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，情况吻合良好．

This paper presents a plate truss model and its calcul ating method of prestressed concrete members under combined bending, shearing and torsion. The calcula ting formulas have been set up and computer programs have been compiled according to the conditions of balance of force, deformation compatibility and stress strain relations. The theory values agree very well to the experimental data.