Bridge seamless telescopic structure adopting mute polyurethane elastomer material and telescopic method of bridge seamless telescopic structure: Fid-Bau Portal

Bridge seamless telescopic structure adopting mute polyurethane elastomer material and telescopic method of bridge seamless telescopic structure

DENG JIANQI / JIANG ZHIMING

Abstract

The invention relates to the technical field of bridge seamless telescopic structures, in particular to a bridge seamless telescopic structure made of mute polyurethane elastomer materials and a telescopic method thereof.The bridge seamless telescopic structure comprises a plurality of angle steel frames distributed at equal intervals and is characterized in that first cross beams are arranged on the angle steel frames, protrusions are arranged above the first cross beams, and the first cross beams are provided with second cross beams; an elastic telescopic component is arranged on the first cross beam, and the bulge can move up and down on the first cross beam through the elastic component; the elastic assembly comprises a fixed cylinder fixed to the first cross beam and a supporting rod fixed to the bottom of the protrusion, the supporting rod is movably inserted into the fixed cylinder, and a limiting ring movably clamped into the fixed cylinder is arranged on the supporting rod. In addition, edge warping caused by transverse tension and compression deformation can be avoided, and the problems that broken stone particles are prone to falling into cracks of the warping edges, so that noise is increased, and the expansion joint structure is damaged are solved.

本发明涉及桥梁无缝伸缩结构技术领域，具体是一种采用静音聚氨酯弹性体材料的桥梁无缝伸缩结构及其伸缩方法，包括多个等间距分布的角钢架，其特征在于，角钢架上设置有第一横梁，第一横梁上方设置有凸起，第一横梁上设置有弹性伸缩组件，通过弹性组件以使凸起能在第一横梁上做上下移动；弹性组件包括固定在第一横梁上的固定筒体和固定在凸起底部的支杆，支杆活动插接在固定筒体内，支杆上设置有活动卡接在固定筒体内的限位环，本发明能减小车轮的轮压荷载作用产生的对伸缩缝结构的纵向拉压变形，避免发生伸缩缝结构凹陷，另外能避免横向拉压变形导致的翘边，避免翘边裂缝处容易落入碎石颗粒导致噪音增加以及对伸缩缝结构造成损害的问题。

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