【摘要】 本文讨论车道荷载的来源、功能、模式及其特征，并对城市桥梁采用车道荷载的背景作了说明。还评述了大跨径桥梁的车道荷载拟定原则，探讨了大跨径桥梁的车道荷载和多车道横向折减。更多还原

【Abstract】 In this paper,the cause,function,model and characteristics of the lane load-ing are treated.The back-ground of selection lane loading in city bridge is also discussed.Byintroducing the principles of initiating a lane loading in long span bridges with comments,the appropriate lane loading as well as multi-lane transverse reduction factors are suggested.更多还原