海啸波引起的近岸房屋局部冲刷试验

发布时间：2018-02-03 19:58

本文关键词： 波浪水槽海啸波局部冲刷近岸房屋试验研究　出处：《水利水电科技进展》2017年01期 　论文类型：期刊论文

【摘要】：基于波浪水槽,分别考虑独栋和房屋群两种情况,开展海啸波引起的近岸房屋局部冲刷试验研究,分别建立了独栋房屋情况下相对最大冲刷深度与海啸波相对越顶高度关系式和房屋群情况下局部最大冲刷深度与海啸波波高、房屋宽度、房屋高度、房屋数量、房屋间的中心间距的关系式。试验结果表明在海啸波越顶水流产生的水跌以及海啸波通过房屋时产生的扰流共同作用下,房屋周围,特别是海侧会产生明显的局部冲刷坑;回落水流水跌是局部冲刷坑产生的主要因素,扰流是次要因素。所建立的关系式揭示了最大局部冲刷深度与海啸波、房屋尺寸、房屋布局的内在联系。
[Abstract]:Based on the wave flume, the local scour experiments of inshore buildings caused by tsunami wave were carried out by considering the single-family and housing groups, respectively. The relationship between the relative maximum scour depth and the relative over top height of the tsunami wave in the case of single-family house and the local maximum scour depth and the height of the tsunami wave, the width of the house, the height of the house, and the number of houses are established respectively. The experimental results show that the water drop caused by the tsunami wave over the top of the house and the turbulence caused by the tsunami wave passing through the house, the results show that the house is surrounded by the joint action of the tsunami wave and the turbulence generated by the tsunami wave passing through the house. In particular, the sea side will produce obvious local scour pits; The relationship between the maximum local scour depth and the tsunami wave, the size of the house, and the layout of the house is revealed by the relationship between the falling water income and the local scour pit, and the disturbance is the secondary factor. The relationship between the maximum local scour depth and the tsunami wave, the housing size and the housing layout is revealed.
【作者单位】：长沙理工大学水利工程学院;水沙科学与水灾害防治湖南省重点实验室;
【基金】：国家自然科学基金(51239001,51409022) 交通运输部应用基础研究项目(2015319825080)
【分类号】：TV147
【正文快照】： 近年来海啸灾害频发,不仅造成了大量的近岸建筑物坍塌或损毁,而且严重威胁着沿岸人民的生命安全[1]。我国以往的海啸研究多集中在海啸成因、海啸波传播以及防灾减灾等方面[1]。大量现场调研表明,海啸波引起的岸滩冲刷危害巨大,很多近岸建筑物不是被海啸波的冲击水流损毁,而是

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