为使我国公路桥梁设计更能适应发展趋势 ,通过参考英、美两国新设计规范 ,感到我国规范荷载标准偏低 ,为避免日后活载增加引起的桥梁加固 ,对于重大的桥梁工程 ,在设计时应参照国外的标准进行验算。文中用算例证实了国内、外设计规范的差距 ,以供工程界探讨和改进 In order to make the design of highway bridges in our country more adaptable to the development trend, by reference to the new design codes of Britain and the United States, we feel that the standard load of our country is low. In order to avoid the bridge reinforcement caused by the increase of live load in the future, Should refer to foreign standards for checking. In this paper, we verify the gap between domestic and foreign design specifications with examples to explore and improve the engineering.