Abstract
In designing statically indeterminate structures of partially prestressed concrete under service load conditions, it is reasonable to take into account reduction of flexural rigidity due to cracking for computing member forces. A practical method for computing redundant force is presented here, because nonlinear analysis considering reduction of rigidity due to cracking is complex for design practices. By using this method, numerical calculations of the partially prestressed concrete continuous girder bridges are tried. The results agree with the value obtained by the nonlinear analysis.
