港口航道对波浪的影响研究

发布时间：2018-01-11 18:40

本文关键词：港口航道对波浪的影响研究　出处：《大连海洋大学》2015年硕士论文　论文类型：学位论文

【摘要】：中国港口工程建设正直高峰期,航运业发展迅速,随着船舶向大型化发展,使得现有港口已经不能满足其要求,港口为了接纳大型、高速船舶,航道和港池都不同程度上浚深和拓宽。在港口工程设计波浪的推算中,以前均不考虑航道的作用,忽略航道的存在,认为海底是平缓的。1984年烟台西港池一期工程港内波况试验结果及烟台西港池二期围埝北端数次被波浪破坏的显示,与不考虑航道对波浪作用情况下的波况矛盾。在1991年一航院在大连港大窑湾散粮码头工程方案的物理模型试验中,SE向波浪使南航到南侧南防波堤堤头设计波高提高了30%以上,ESE向波浪航道北侧计划建设的岛式防波堤处波高提高了50%。此后在很多工程规划和物理试验中,陆续发现多项工程设计的波浪受航道影响,由此可见,航道开挖对波浪的影响是不可忽视的。如何趋利避害,成为了工程建设的一个决定性问题。本文通过利用国际通用的MIKE21应用软件,对航道开挖后波浪传播的规律进行了研究,分析了因波浪入射角、航道深度、航道宽度、波浪周期、航道边坡变化所产生的航道两侧的波高分布特征的不同,并的得出影响波高分布的主要因素为波浪入射角、航道深度这一结论,为航道附近水工建筑物设计提供参考。针对实际工程案例,提出了三种不同的航道开挖方案,并且计算了不同航道水深下港内的波高分布状况,为实际工程施工提供了参考依据。
[Abstract]:The peak period of the integrity of port construction in China, the rapid development of the shipping industry, with the development of ships to large-scale, make the existing port can not meet its requirements, the port in order to accept large, high-speed ships. The channel and the harbour pool are dredged and widened in varying degrees. In the calculation of the wave in the design of port engineering, the function of the channel was not considered before, and the existence of the channel was ignored. It is considered that the sea floor is gentle. In 1984, the results of wave condition test in the first stage of Yantai West Port Pond Project and the results of wave damage at the north end of the second stage of Yantai West Port Pond cofferdam are shown. In 1991, in the physical model test of Dalian port Dayaowan bulk grain wharf project project, the first navigation institute carried out a physical model test. The SE wave increases the design wave height of the breakwater head from the south to the south by more than 30%. The wave height at the island breakwater planned to be built by ESE to the north side of the wave channel has been increased by 50%. Since then, in many engineering planning and physical experiments, the waves of many engineering designs have been found to be affected by the channel, so it can be seen. The influence of channel excavation on wave can not be ignored. How to seek advantages and avoid disadvantages has become a decisive problem in engineering construction. This paper makes use of international MIKE21 application software. The law of wave propagation after channel excavation is studied, and the characteristics of wave height distribution on both sides of channel caused by wave incident angle, channel depth, channel width, wave period and channel slope change are analyzed. The main factors affecting the distribution of wave height are the incident angle of the wave and the depth of the channel, which provides a reference for the design of hydraulic structures near the waterway. Three different waterway excavation schemes are put forward, and the distribution of wave height in the harbor under different waterway depths is calculated, which provides a reference for practical engineering construction.
【学位授予单位】：大连海洋大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U612.23;U652.3

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