In summarizes the predecessor to the segmental arch surface and outside in flexure critical load computational method foundation, with the principle of the minimum potential energy, an analytical solution for the lateral critical bucking load of cable stayed arch bridge is studied 在总结前人对圆弧拱的面内,面外屈曲临界荷载计算方法的基础上,利用能量法,推导了斜拉拱桥的侧倾临界荷载计算公式。