目前由于高速公路的交通量的逐年增大,一些修建历史较久的旧桥难以满足当前高速公路的交通需求,尤其是在桥梁桥面宽度的问题上难以满足来往车辆的增长。因此,对高速公路桥梁的加宽处理成为环节高速公路桥梁压力的最有有效的措施。基于此,文中笔者对拼宽桥梁受力情况存在的问题进行分析之后指出了桥梁拼宽纵向接缝施工工艺,以期能够对我国高速公路桥梁的拼宽改造工程具有一定的参考意见。 At present, due to the increasing traffic volume on expressways, some old bridges that have been built for a long time can not meet the traffic demands of the current expressways. In particular, it is difficult to meet the growth of vehicles on the bridge deck width. Therefore, the widening of expressway bridges becomes the most effective measure to bridge the bridge pressure on expressway links. Based on this, the author analyzes the problems existing in the stress-relieving bridges, and points out the construction technology of the bridge-splitting longitudinal joints, so as to provide reference for the fight-width alteration project of the expressway bridges in our country.