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 在總結(jié)前人對(duì)圓弧拱的面內(nèi),面外屈曲臨界荷載計(jì)算方法的基礎(chǔ)上,利用能量法,推導(dǎo)了斜拉拱橋的側(cè)傾臨界荷載計(jì)算公式。