It has found reasonable ways brought roadbed to resultant stabilization owning to synthesize many factors such as earthiness,hydroclimate,wheather etc to find self weight and external load of roadbed. 本文结合大齐公路施工实例,论述了合理的通车碾压工后沉降期及相应制约因素,综合了土质水文、气候天气等制约因素,以寻找路基自重外荷载作用,使路基达到最终稳定的合理途径。