Through FE analysis of local area for four continous box girder bridges, the necessity of three dimensional analysis of prestress effects is proved.

• 经过对四座连续梁桥整体及局部的有限元仿真分析,认为对大跨度预应力混凝土箱梁桥进行基于空间应力状态的预应力效应分析是很有必要的;