METHOD FOR EVALUATING RUST FORMING INFLUENCE FACTOR OF STEEL BRIDGE

摘要

PROBLEM TO BE SOLVED: To provide a method for evaluating a rust forming influence factor of a steel bridge capable of reducing a manufacturing cost and a life cycle cost of the steel bridge.;SOLUTION: Surfaces of a left main girder 10 and a right main girder 20 are divided for each portion of the predetermined 24 places depending on a degree of an influence to a rust forming by a plurality of influence factors which is different from the rust forming each other. An incoming salt component atmosphere coefficient, a surface salt adhesion coefficient, a washing loss coefficient and a humidity coefficient for each portion are decided based on a plurality of influence factors arranged between the range of 0-1.0 at the divided each portion as a value reflecting the degree of an influence to the rust forming and evaluate the rust property by respectively multiplying each coefficient and the rust property forecasted to be formed after 100 years later for each portion of the 24 places and by calculating the rust thickness forecasted to be finally formed in each portion of the 24 places.;COPYRIGHT: (C)2009,JPO&INPIT