应用斜梁桥与正梁桥之间夹角的余弦关系 ,找到了一种求解连续斜梁桥赘余未知力的近似方法。它把一个连续斜梁桥的力学问题转化为连续正梁桥的力学问题。通过几个算例的验证 ,其计算结果不但具有较高的精度 ,而且其计算过程可以应用一般平面杆系有限元法的计算程序来完成。因此 ,它给设计人员带来很大的方便 By using the cosine relation of the angle between the inclined beam bridge and the positive beam bridge, an approximate method for solving the unknown unburied force of the continuous inclined beam bridge is found out. It transforms the mechanical problem of a continuous skewer bridge into a mechanical problem of a continuous beam bridge. Through several examples of validation, the results not only with high accuracy, and its calculation process can be applied to the general planar rod finite element method to complete the calculation program. Therefore, it gives designers a great convenience