The linear elastic slope deflection equations of gable portal frames when occur the side - sway and non - sway buckling are derived . the equations considere the rafter slope and the vertical uniform loading subjected on the rafter . the established equations of non - sway buckling can consider the effect of snap change effect of gable frame 推導了山形門式剛架有側(cè)移失穩(wěn)和無側(cè)移失穩(wěn)的線彈性位移方程,方程考慮了斜梁傾角和斜梁上豎向均布荷載的影響;建立了能考慮山形門式剛架跨變效應(yīng)的無側(cè)移失穩(wěn)位移方程。