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夹层板整体曲面形桥墩防撞装置受力性能分析

, PP. 46-54

Keywords: 桥梁工程,夹层防撞装置,数值计算法,曲面形浮箱,受力性能

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Abstract:

?为了解一种新型夹层板整体曲面形桥墩防撞装置的防撞性能,采用数值计算法对不同夹层板厚度的曲面形防撞套箱,以不同角度、不同位置撞击时的受力性能进行了对比分析。研究结果表明:夹层板外层钢板表面各向应力绝对值均为内层钢板的2倍以上;外层钢板表面的各向压应力相差不大,并向四周迅速减小;内层钢板表面应力在撞击点附近有拉压变化,竖向应力的绝对值比横向应力的大;夹层板曲面防撞套箱正撞的几率小,斜撞时能明显降低套箱的受力,撞击点的竖向偏离应力降幅远大于水平向偏离应力的降幅;夹层板厚度变化对钢板应力的影响大于对凹陷深度的影响。

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