Matlab-based Calculation and Drafting Internal Force Diagram of Statically Indeterminate Rigid Frame

To resolve statically complex indeterminate rigid frames is a large amount of work to calculate the coefficient and free terms.As a large-scale mathematical computation software,Matlab programming can be used to solve this problem step by step.A calculation method of rigid frame is proposed.Methods of calculation and drawing of rail and vertical pole are given,and it also can calculate the vertical pole as a rail.Based on the case,this paper presents that Matlab is efficient and convenient in calculating a structural mechanics and can be applied to many kinds of structures.