The Structural Analysis Of Orthotropic Steel Deck And Its Program

The orthotropic plate is the structural component which has better performance in the aspect of intensity, stability, stiffness and sufferring force as a whole. It is a new form of the structure of the steel deck bridge. This paper try to mix the finite strip method and hybrid stress element, and deduce a numerical and computer method which combines the advantages of the two methods -mixed hybrid finite strip method; analyze the intensity and stability of the orthotropic plate by this method; deduce the formula of the orthotropic plate's analysis and calculation under this method; compile the program of orthotropic plate's mixed hybrid finite strip method(HFSOP.FOR) with FORTRAN-77 language, and perform them under FORTRAN90 environment of PC computer; comparing with traditional methods by example of computing, prove that the mixed hybrid finite strip method have better degree of accuracy, moderating the stiffness of plate, coming more close to actual conditions, avoiding over-hard or over-soft; finally, this paper analyze the stability of a orthotropic plate by this method, and deduce the λ-value of critical stress.