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前言桥梁伸缩装置是保持路面平坦与连续性、减缓桥梁上部结构产生变位的构件。它为确保行车安全和平稳舒适地行驶,起着重要的作用。然而,伸缩装置因受直接轮荷载的反复辗
Foreword Bridge telescopic device is to maintain the road surface flat and continuity, to reduce the displacement of the upper structure of the bridge components. It plays an important role in ensuring driving safety and smooth and comfortable driving. However, telescopic units suffer from repeated loading of direct wheel loads