集中荷载作用下简支深梁的压拉杆模型研究

Study of strut-and-tie models for simply supported deep beams subjected to point loads

介绍了在集中荷载作用下,反映深梁基本传力路径的四种压拉杆模型,提出了物理意义明确、传力路径清晰的组合压拉杆模型,并计算了集中荷载作用下无腹筋深梁混凝土压杆强度,提出了混凝土压杆修正系数Cc,反映了混凝土对深梁抗剪的贡献。

Four kinds of strut-and-tie models are introduced to represent the basic load transfer paths of deep beams Subjected to point loads. Compared to the previous experimental results, a combined strut-and-tie model is presented, which represents definite both physical meaning and load transfer paths. In addition, the equation for the strength of concrete in deep beams without web reinforcement is presented in which the correction factor Cc is introduced, indicating the contribution of the arch resistance mechanism to the shear strength of deep beams.