Grid Analysis of Wide, Short-Span Continuous Curved Box Girders Utilizing Curved Member Properties

摘要

A computer analysis method based on curved beam and transverse slab elements is presented for box girder bridges. A program in FORTRAN 77 language and a user's guide is included. The torsional stiffness of beam elements is obtained by dividing the total torsional stiffness of the box girder between individual beam elements. The program includes an automated routine for generating global Cartesian coordinates and numbering of nodal points. The analysis method and program are suitable for the analysis of: Wide or narrow box girders, straight or curved elements, skewed abutments and piers, with or without integral pier caps, and simple or complex curvature. Results are presented in terms of shears, moments, torques and displacements in beam and slab elements. Results of the project are expected to be useful to practicing bridge designers in State Bridge Divisions.