桥梁伸缩装置是桥梁构造的一部分 ,如果设计不当 ,安装质量低劣、缺乏科学的和及时的养护 ,会导致桥梁在伸缩缝处形成台阶 ,直接影响到桥梁使用质量。本文详细地分析了桥梁伸缩缝处产生跳车的原因 ,并提出只有通过合理的设计、认真的施工、及时的养护才能解决桥梁伸缩缝处跳车的问题 Bridge expansion device is part of the bridge structure, if not properly designed, the installation of poor quality, lack of scientific and timely conservation, will lead to the formation of bridges in the expansion joints, a direct impact on the quality of the bridge. This paper analyzes in detail the reasons for the jerkiness at the bridge expansion joints and puts forward that the problem of jerkings at the bridge expansion joint can be solved only by reasonable design, serious construction and timely maintenance