本文關(guān)鍵詞： 雙層平臺斜坡式護(hù)岸 模型試驗 波壓力 波浪爬高　出處：《大連理工大學(xué)》2014年碩士論文　論文類型：學(xué)位論文

【摘要】：在海岸工程和港口建設(shè)中,護(hù)岸是重要的水工結(jié)構(gòu)物,其主要作用是抵御潮流和波浪的襲擊,防止越浪水量對后方陸域造成危害。護(hù)岸堤防工程需確保強(qiáng)度和穩(wěn)定性達(dá)到設(shè)計使用要求,堤頂高程也需達(dá)到一定的標(biāo)準(zhǔn)及高度,從而控制波浪爬高與越浪對后方陸域的影響,而且還要做到經(jīng)濟(jì)可行。 本文研究基于某工程雙層平臺斜坡式護(hù)岸結(jié)構(gòu)的物理模型試驗。其海床基底高程為-1.67m,水深4.1m-6.6m,在高程為+3.0m的一級平臺、+4.5m的二級平臺、以及+5.8m高程處分別設(shè)置三處同頂高程的胸墻,本文中均分別簡稱為：1#、2#、3#胸墻�？紤]了平臺相對寬度B/L、胸墻相對高度A/H、平臺相對高程S/d和一、二級平臺寬度比值B1/B2等因素對胸墻波壓力和平臺波浪爬高的影響。并討論了不同護(hù)肩形式對胸墻的波壓力的影響,以及一級平臺開孔率對一級平臺面板浮托力和胸墻波壓力的影響。 試驗研究結(jié)果表明,胸墻波壓力受平臺相對高程影響較明顯,在S2/d=0.9～1.2時達(dá)到最大值。波浪爬高受相對胸墻高度影響較大和平臺相對高程影響較明顯。雙層網(wǎng)箱護(hù)肩相比八字塊體護(hù)肩更具消能效果,3#胸墻的波浪力降低可40%-50%。隨著一級平臺開孔率的提高,一級平臺面板最大浮托力和胸墻波浪力均得以降低。
[Abstract]:In coastal engineering and port construction, bank revetment is an important hydraulic structure whose main function is to protect against tidal currents and waves. In order to control the influence of wave climbing and surpassing on the rear land area, it is necessary to ensure that the strength and stability of the revetment levee meet the design requirements, and the height of the top of the embankment should reach a certain standard and height, so as to control the influence of wave climbing and surpassing waves on the rear land area. But also to be economically viable. This paper studies the physical model test of slope revetment structure based on a double-deck platform of a certain project. The seabed base height is -1.67 m, the water depth is 4.1m-6.6 m, and the first-grade platform with 3.0m elevation and the second-stage platform with 4.5m elevation is studied. And there are three chest walls with the same top height at 5.8m elevation. In this paper, they are respectively referred to as "1: 1 #q2 #3#" chest wall. The relative width of the platform B / L, the relative height of the chest wall A / H, the relative height of the platform S / / d and one are considered. The influence of the second stage width ratio B1 / B2 on the wave pressure of the chest wall and the wave climb of the platform is discussed, and the influence of different shoulder protection forms on the wave pressure of the chest wall is discussed. And the influence of the opening ratio of the first stage platform on the floatation support force and the wave pressure of the chest wall. The experimental results show that the wave pressure of the chest wall is obviously affected by the relative elevation of the platform. The wave climbing is greatly affected by the relative height of the chest wall and the relative height of the platform. Compared with the octa-block shoulder, the double-layer cage shoulder has more energy dissipation effect and the wave force of the chest wall can be reduced by 40 to 50 with the decrease of the wave force of the wall. The improvement of the opening rate of the first grade platform, The maximum floatation support force and the wave force on the chest wall can be reduced.
【學(xué)位授予單位】：大連理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號】：P753

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本文編號：1511885