无粘结部分预应力混凝土梁开裂荷载的计算

The Calculation of the Cracking Load of Unbonded Prestressed Concrete Beams

用粘结滞后系数，根据无粘结部分预应力混凝土中无粘结筋与混凝土的变形相容条件，推导了一种开裂荷载的计算方法，计算结果与实测数据进行了比较，符合程度良好。

According to the criterion of de forming equation of unbonded prestressed steel and concrete,this paper presents a method for calculating the cracking-load of unbonded prestressed concrete beams. The calculated results are compared with the test ones,and it is proved that the proposed method is adoptable.