先简支后连续预应力混凝土T形梁腹板竖向裂缝是桥梁典型病害之一,产生原因复杂,本文通过对该类裂缝的统计、裂缝特征的归纳研究以及容易忽略因素的分析,提出T梁腹板竖向裂缝产生的最不利因素和防治方向。 The first reason is that the vertical cracks in the webs of the T-shaped continuous girder with prestressed simply supported and continuously prestressed concrete are one of the typical diseases of the bridges. The causes are complex. Based on the statistics of the fractures and the analysis of the fracture characteristics and the easily neglected factors, The most unfavorable factor of vertical cracks in girder webs and the prevention and cure direction.