Mechanic Performance Research of Lightweight Portal Frame With Cable

A two-spans portal frame was discussed on its suitable forms and ascertained two schemes.Two pieces same span in two-spans portal frame,as models,were taken finite element method which mixed beam element,bar element and cable element to become nonlinear element to analysis which were adopted of ANSYS finite ele-ment software.They were compared under the different cases and loads to be observed their internal force and deform regularity,so that a more suitable case can be found.