预应力混凝土斜桥支座反力分析

该文通过对某座预应力混凝土斜交箱形连续梁的计算分析,总结出了斜交箱梁支反力分布特点,得出一些有益的结论。边腹板处支座支反力较大,中腹板处支座支反力较小,这就要求对边腹板的抗弯剪能力给予加强,因反力分布的不均匀性,支座的选取需考虑斜桥效应。分析表明,对于对称布跨的连续梁斜桥支反力呈反对称分布。

Analysis on Support Reaction of Prestressed Concrete Skew Bridge

Through the calculation and analysis of a continuous prestressed concrete skew box girder,the article summarizes up the support reaction distributed feature of skew box girder,and gives some useful conclusions. The support reaction at the side web plate is larger,and but the one of mid web plate is smaller. It is required to strength the bending and shear capacity of side web plate. It needs to consider the skew bridge effect for selecting the support because of distributed inhomogeneity of reaction. Analysis shows that the support reaction for the symmetrically distributed span of continuous beam skew bridge should be anti-symmetrically distributed.