外海人工岛护岸堤顶高程及越浪量研究

发布时间：2018-01-21 16:08

本文关键词： 人工岛护岸高程越浪量断面优化　出处：《长沙理工大学》2015年硕士论文　论文类型：学位论文

【摘要】：近年来随着外海人工岛建设步伐的加快,有关人工岛问题的研究明显增多,其中护岸工程对于人工岛的安全防护尤为重要。如何确定人工岛护岸的堤顶高程,国内还没有明确的相关规范,因此本文主要针对人工岛斜坡式护岸堤顶高程确定方法及越浪量开展研究。论文依托具体工程,对基于设计波高、波浪爬高和越浪量控制的三种堤顶高程计算理论进行了应用研究,对国内外波浪爬高及越浪量公式进行了计算比较分析,推荐了工程海域范围斜坡式护岸堤顶高程理论确定方法及较为适用的波浪爬高、越浪量计算公式。开展了人工岛护岸典型断面物理模型试验,对不同工况下斜坡式护岸堤顶越浪量及护面护底块石稳定性情况进行了分析,试验结果表明,基于越浪量控制的理论计算方法所确定的堤顶高程较为合理。采用flow3D流体计算软件对斜坡式护岸越浪进行了数值模拟,探讨了流体计算软件用于带防浪墙斜坡式护岸越浪模拟的可行性,并对反L型防浪墙前坡坡度与越浪量的相互关系做了初步研究。基于理论计算、物理模型试验及数值模拟结果,对依托工程中斜坡式护岸结构断面进行了优化研究,可为工程设计提供参考。研究结果也表明,在工程中基于控制越浪量的计算理论所确定的斜坡式护岸堤顶高程是经济可行的。
[Abstract]:In recent years, with the acceleration of the construction of artificial islands off the sea, the research on artificial islands has increased obviously, among which the revetment engineering is particularly important for the safety protection of artificial islands. How to determine the top elevation of artificial island revetment. There are no clear relevant codes in China, so this paper mainly focuses on the determination method of the top elevation of artificial island slope embankment and the amount of surpassing waves. Based on the specific projects, this paper focuses on the design of wave height. The calculation theory of the top elevation of three kinds of levees controlled by wave climbing and surpassing is studied in application. The formulas of wave climbing and surpassing are compared and analyzed at home and abroad. The theoretical determination method of the top elevation of slope revetment in engineering sea area and the more suitable formula for calculating wave climbing and surpassing are recommended. The physical model test of typical cross-section of artificial island revetment is carried out. In this paper, the overtopping capacity of the slope embankment under different working conditions and the stability of the bottom block are analyzed, and the experimental results show that. The height of the top of the embankment determined by the theoretical calculation method based on the control of surpassing wave volume is reasonable. The flow3D fluid calculation software is used to simulate the slope type bank protection surpassing wave numerically. This paper discusses the feasibility of using fluid calculation software to simulate the slope slope surpassing wave with anti-wave wall, and makes a preliminary study on the relationship between the slope gradient and surpassing volume of the anti-L-type anti-wave wall, based on the theoretical calculation. The results of physical model test and numerical simulation are used to optimize the section of slope revetment structure in supporting engineering, which can be used as a reference for engineering design. It is economical and feasible to determine the top elevation of slope bank protection embankment based on the calculation theory of controlling surpassing in engineering.
【学位授予单位】：长沙理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P756.8

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