论文部分内容阅读
本文把多主梁弯桥上部结构看作主梁间相互刚结的弯梁系,同直桥类似地,解除主梁间的连结,代之以超静定未知力,根据变形协调条件,利用曲梁的联立微分方程,可建立赘余力的力法正则方程,从而求得荷载的横向分布影响线,进而求得单根曲梁的横向分布系数。 采用本文方法的数值例题与SAP5的计算结果进行了比较,结果是很吻合的。
In this paper, the upper structure of a multi-main beam curve bridge is considered as a curved beam system with a rigid joint between the main beams. Similar to the straight bridge, the connection between the main beams is released, and the super statically determined unknown force is used instead. According to the deformation coordination conditions, the The coupled differential equations of curved beam can establish the regular equation of the force law, so as to obtain the lateral distribution of the load, and then obtain the lateral distribution coefficient of the single curved beam. The numerical examples using this method are compared with the calculated results of SAP5. The results are very consistent.