Influence of Pier Geometry and Debris Characteristics on Wood Debris Accumulations at Bridge Piers

Influence of Pier Geometry and Debris Characteristics on Wood Debris Accumulations at Bridge Piers
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桥墩几何形状和碎片特征对桥墩木碎片堆积的影响

DOI:
10.1061/(asce)hy.1943-7900.0001757
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发表时间:
2020
影响因子:
2.4
通讯作者:
Panici D
Panici D
中科院分区:
工程技术3区
文献类型:
--
作者:
Panici D

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本文分析了桥墩几何形状和所供杂物对桥墩木屑堵塞形成和发展的影响。共进行了162项实验室实验。实验结果表明,圆柱形碎片堆积形成的最大碎片堵塞尺寸(即, 木榫)的直径小于由不规则形状的天然无枝木材形成的堵塞物的直径。此外,分支碎片的实验导致的堵塞,显着更小,更不稳定,比那些与非分支的天然碎片。最后,比较六个不同的桥墩形状进行的实验表明,桥墩的形状对木质残体堵塞的最大尺寸的影响可以忽略不计。观察到的唯一例外是方形桥墩,其显示出比其他类型的桥墩稍大的碎片堵塞尺寸。
This paper analyzes the influence of the geometry of bridge piers and supplied debris on the formation and growth of wood debris jams at bridge piers. A total of 162 laboratory experiments were conducted. Experimental results showed that the maximum size of debris jams formed by the accumulation of cylindrical debris (i.e., wooden dowels) is smaller than that of jams formed by natural nonbranched wood of irregular shape. In addition, experiments with branched debris resulted in jams that were significantly smaller and less stable than those with nonbranched natural debris. Finally, comparison of experiments conducted with six different pier shapes indicated that the shape of the pier has negligible effects on the maximum size of a woody debris jam. The only exception to this observation was for square piers, which showed slightly larger debris jam sizes than the other types of piers tested.
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