单跨斜支承梁在一般情况下得承受弯曲与扭转。弯矩和扭矩两者的相互作用取决于梁截面的弯扭刚度比和斜支承的角度。文中给出了特征荷载情况的影响线以及桥梁工程所遇到的主要荷载类型。从而可迅速确定任意荷载下的截面内力。文中并讨论了斜支承梁的承载性能。 Single-span diagonal beam under normal circumstances to withstand bending and torsion. The interaction between bending moments and torques depends on the ratio of bending torsional stiffness to the beam cross-section and the angle of diagonal support. The paper gives the influence line of characteristic load and the types of main loads encountered by bridge engineering. This allows rapid determination of the cross-section forces at any load. The bearing capacity of inclined beam is discussed in this paper.