多层圆弧板透空式防波堤水动力特性试验研究

发布时间：2018-03-03 17:33

本文选题：圆弧板　切入点：透空式防波堤　出处：《大连理工大学》2014年硕士论文　论文类型：学位论文

【摘要】：传统的防波堤消浪效果较好,但也有不适用于深水、造价高昂等缺点。透空式防波堤克服了以上的缺点,并且对环境友好,已越来越多的得到人们的关注。然而,透空式防波堤也有其缺点,由于部分波浪能量可以透过防波堤,导致堤后的波高较大,尤其是在长波的作用下其消浪效果并不理想。圆弧式结构受力特性较好,且对于消波有一定效果。本文结合透空式防波堤与圆弧式结构的特点,提出了一种多层圆弧板透空式防波堤,并对其水动力特性进行了二维的物理模型试验。通过与多层水平板透空式防波堤消浪效果的比较,验证了多层圆弧板透空式防波堤的消浪效果更好。同时,试验还研究了圆弧板的层数、相对宽度、板间距、顶层板的淹没深度和圆弧的高度对该结构形式的防波堤消浪效果的影响。试验发现,在布置合理的情况下,圆弧板透空式防波堤的消浪性能明显较水平板透空式防波堤更为优秀。研究结果还表明,圆弧板的层数、相对宽度、顶层板的淹没深度、板间距和圆弧板的高度均对圆弧板透空式防波堤的消浪性能有影响。另外,本文还对圆弧板和水平板的受力特性进行了比较分析,研究结果表明,在入水深度相同时,二者所受的竖向波浪力大小相当。
[Abstract]:The traditional breakwater has good effect, but it is not suitable for deep water and high cost. The porous breakwater overcomes the above shortcomings, and is more and more environmentally friendly. However, it has been paid more and more attention to. Because some wave energy can pass through the breakwater, the wave height behind the breakwater is larger, especially under the action of long wave, the effect of wave elimination is not ideal. The stress characteristic of circular arc structure is good, and it has certain effect on wave dissipation. In this paper, combined with the characteristics of porous breakwater and circular arc structure, a kind of multilayer circular plate perforated breakwater is put forward. Two-dimensional physical model tests were carried out on its hydrodynamic characteristics. By comparing with the wave dissipation effect of the multilayer horizontal plate perforated breakwater, it is proved that the multilayer arc plate permeable breakwater has better effect of wave elimination. At the same time, the number of layers, the relative width and the plate spacing of the arc plate are also studied. The influence of the submerged depth of the top floor plate and the height of the arc on the wave dissipation effect of the breakwater. It is found that the wave attenuation performance of circular plate perforated breakwater is better than that of horizontal plate permeable breakwater under reasonable arrangement. The results also show that the number of layers, relative width, and the submerged depth of the top layer of the circular plate are better than those of the horizontal plate. The distance between the plates and the height of the circular plate have an effect on the wave attenuation performance of the perforated breakwater. In addition, the stress characteristics of the circular plate and the horizontal plate are compared and analyzed. The vertical wave forces on both sides are equal.
【学位授予单位】：大连理工大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U656.2

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