无粘结筋对构件抗弯刚度的贡献分析与研究

The Contribution to the Flexural Stiffness of the Unbounded Tendons in Prestressed Concrete Beams

采用材料力学方法推导了无粘结预应力混凝土受弯构件的抗弯刚度公式 ,指出无粘结筋对构件抗弯刚度的贡献小于有粘结筋对构件抗弯刚度的贡献 ,对布筋形式。

In this paper,the formula of flexural stiffness of unbounded prestressed concrete beams are developed by the method of material mechanics.It is shown that the contribution to the flexural stiffness of the unbounded tendons is smaller than that of the bounded tendons.The layout of unbounded tendons and the loading conditions are also simply analyzed.