夹层板整体曲面形桥墩防撞装置受力性能分析

发布时间：2018-04-11 08:22

本文选题：桥梁工程 + 夹层防撞装置　；参考：《中国公路学报》2014年10期

【摘要】：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。
[Abstract]:In order to understand the anti-collision performance of a new type of anti-collision device for monolithic curved pier of sandwich plate, a numerical calculation method was used to compare and analyze the mechanical behavior of curved box with different thickness of sandwich plate under different impact angles and positions.The results show that the absolute values of stress in each direction of the steel plate are more than 2 times of that of the inner steel plate, and the compressive stress on the surface of the outer steel plate is not different from that of the inner steel plate, and decreases rapidly in the four directions.The surface stress of inner steel plate changes in tension and compression near the impact point, the absolute value of vertical stress is greater than that of transverse stress, the probability of positive collision of sandwich plate curved surface anti-collision sleeve box is small, and the force of casing box can be obviously reduced when inclined impact.The vertical deviation stress of the impact point is much lower than the horizontal deviation stress, and the influence of the thickness of the sandwich plate on the stress of the steel plate is greater than that on the depth of the depression.
【作者单位】：华南理工大学土木与交通学院;广东省路桥规划勘察中心;
【基金】：国家自然科学基金项目(51278201) 广东省交通运输厅科技项目(2012-02-021) 广东省公路管理局科技计划项目(粤公研2011-28)
【分类号】：U443.26;U441

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