1前言 桥梁的形式和结构各异,既有城市快速主干道的高架道路,又有跨径仅10m的单跨小型桥梁。桥梁中的伸缩缝往往会给车辆行驶带来某些缺陷。具体表现为:长期以来小跨径桥梁的伸缩缝形式单一;使用寿命达不到设计要求;行车噪音过大;施工工期太长;养 1 Introduction The form and structure of the bridge varies, both the city’s rapid main road elevated road, there are only a single span of 10m span of a small bridge. Telescopic joints in a bridge tend to give the vehicle some drawbacks. The concrete manifestation is that the long-span bridge has a single form of expansion joints, the service life can not meet the design requirements, the driving noise is too large, and the construction period is too long.