Research on Application Effect Evaluation of Steel Box Girder Bridge Based on Combination Weighting

At present, the research on application effect of steel box girder bridges is still only in qualitative analysis link, and calculation index weights greatly affected by personal subjective factors, quantitative evaluation has not been achieved. In this paper, we proposes a combination objective combined weighting fuzzy model, which avoids unreasonable problem single method determining weight coefficients, makes distribution results more accurate effective. Among them, coefficient variation AHP are used to calculate indicators, linear determine comprehensive indicators. Then, with carried out. Finally, effectiveness model verified practical project case.