Transmission tower pole stress calculation method for analytically calculating stress of all poles of tower

The invention discloses a transmission tower pole stress calculation method for analytically calculating stress of all poles of a tower. The method comprises the steps that a finite element mechanical model of a tower structure is built through a finite element method, and discretion of the overall structure is conducted according to the tower structure composition; an element stiffness matrix is generated for each element, and the element stiffness matrixes are superposed to generate a global stiffness matrix by combining the space angle relation and the connection relation among the poles in the tower structure; a load array is generated according to loads borne by the tower, and a node displacement array is taken as an unknown quantity to form a matrix equation together with the global stiffness matrix and the load matrix; and finally, node strain is acquired by solving the matrix equation, and then the stress of all the poles in the tower structure is obtained. According to the method, accurate solving is