钢筋砼纯扭构件抗扭强度的试验研究和计算方法

本文根据《钢筋混凝土结构设计规范》抗扭科研专题组近十年来大量试验研究的结果,集中地讨论了钢筋砼纯扭构件的受力性能,提出了开裂后钢筋砼纯扭构件的抗扭强度计算公式。并在分析研究的基础上,对纯扭构件的工作机理采用变角空间桁架模型给予理论上的解释,为修订新的设计规范提供主要依据。

Research on Reinforced Concrete Members under Pure Torsion

Based on a large number of test results and research made by the research group on torsion of reinforced concrete for the "Concrete Structure Desigh Code" in last ten years, the characteristics of reinforced concrete members under pure torsion were discussed in detail. A calculating formula for the torsional strength of. pure torsion member in consideration of the contribution of cracked concrete was presented.According to the research results,the mechanism of members under pure torsion was explained theoretically by use of the space-truss model with changeable angles. It provided a base for the revision of the "Concrete Structure Design Code",