钢筋混凝土弯扭构件强度研究

本文主要研究钢筋混凝土构件在弯矩和扭矩共同作用下的强度计算．扼要阐述了国内外关于钢筋混凝土弯扭构件强度理论研究的发展概况，并对组合受扭构件的破坏机理进行了分析．根据极限平衡的思想，吸取了桁架理论的模式特征，提出了《考虑相关影响的迭加计算方法》，并用实验方法加以验证．由于随机因素的影响，理想方程用于实际，还需根据试验结果对基本方程进行必要的修正． 论文附有计算实例，用对比的方法，分析了所建立的强度计算方法具有节省材料的经济效益．并借以说明计算方法具有实用简便的优点．

COMBINED EFFECT OF BENDING AND TORQUE ON R.C.BEAMS

In dealing with the computation of strength of reinforced concrete beams under the combined action of bending and torsion forces, a brief review is first made concerning the theories developed in this country and abroad.Then the composite effects on beam failure is analysed for the purpose of tackling its computation problem. In order to obtain a theoretical basis for a better solution, with comme- nts on earlier information, a new idea is conceived of using the analogy of truss member characteristics in balancing the ultimate strength. Consequently, a method of successive increment, by taking into account the interrelation of forces, is suggested, and the results of computation are verified by experim- entation. Owing to the stochastic factors in volved in actual application, it is necessary, however, to make a certain: adjustment to the basic equation, so that the experiments may be conducted for collecting the data to the pur- pose. A typical example of computation of strength is supplemented to this paper. In comparison with the tradional pratice in the past, the new method proves to .be more economical in the utilization of materials and also more convenient in computation.