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本文依据一系列试验数据,按照塑性力学的基本原则,采用半经验、半理论的方法,分析了在集中荷载作用下少筋双向混凝土加腋板的破坏机理,提出了准屈服概念。文中对该类板中薄膜力的性质、规律及大小进行了分析,提出了薄膜力及挠曲强度的计算公式,对工程中实用的少筋桥面板进行了计算,实测值与计算结果符合较好,说明它们有足够的安全度.
Based on a series of experimental data and using the semi-empirical and semi-theoretical methods in accordance with the basic principles of plasticity mechanics, this paper analyzes the failure mechanism of less tendons and concrete under the action of concentrated load and puts forward the concept of quasi-yield. In this paper, the nature, regularity and size of the film force in this type of plate are analyzed. The formula for calculating the film force and flexural strength is put forward. The calculation of the less flexible tendon bridge plate in the project is carried out. The measured and calculated results are in good agreement Well, that they have enough security.