English：

There are shortcomings and difficulties in promoting the current simplified calculation methodsfor calculating the eccentric load coefficient of wide bridge deck box girder bridges, a landscape bridgewas taken as the research object, the finite element software MIDAS Civil was used to establish a gridmodel, and the distribution law and influencing factors of the eccentric load coefficient were studied. Toverify the rationality and effectiveness of the numerical method, the applicability for the eccentric loadeffect analysis method, modified bias method, and empirical coefficient were compared, based on thenumerical simulation results of 3 existing prestressed concrete continuous box girder bridges. The resultsshow that, for multi-chamber box girder bridges with wide bridge decks, the empirical coefficient methodand the modified bias method are not suitable for calculating the shear stress eccentric load coefficient,the calculation results are seriously low, and it is difficult to consider the differences in different sections,even during the design stage, there was a situation where the main tensile stress of the web exceeded thelimit. The beam grid model and the eccentric load effect analysis method can accurately calculate theeccentric load coefficient, and provide the law of the variation.