METHOD OF EVALUATING CONTINUOUS BEAMS, PROGRAM FOR EVALUATING CONTINUOUS BEAMS, AND METHOD FOR EVALUATING COMPOSITE BEAMS

摘要

This method of evaluating continuous beams includes a solution determination step for finding, on the basis of given conditions, a plurality of bending moments at an intermediate fulcrum and a pair of end fulcrums, and a plurality of rotational angles at the pair of end fulcrums. The given conditions include: length and flexural rigidity of each of n beams; a plurality of rotational rigidities at the intermediate fulcrum and the pair of end fulcrums; vertical load acting on the n beams; and a plurality of perpendicular displacements at the intermediate fulcrum and the pair of end fulcrums. In the solution determination step: the plurality of bending moments and the plurality of rotational angles are defined as a plurality of unknowns; a relational expression for the plurality of perpendicular displacements, and relational expressions for the plurality of rotational rigidities, plurality of bending moments, and plurality of rotational angles are defined as a plurality of first boundary conditions of the same number as that of the plurality of unknowns; and at such time, the plurality of unknowns are solved so that the plurality of unknowns satisfy the plurality of first boundary conditions, thereby evaluating the bending moment and the sag distribution of the continuous beam.