本文選題：流函數(shù)波浪理論 + 波浪作用��； 參考：《北京工業(yè)大學(xué)》2014年碩士論文

【摘要】：所有海洋工程建設(shè)都必須在牢固的基礎(chǔ)上完成，海洋工程地基埋于海洋土環(huán)境中，海洋土層為多孔多相介質(zhì)，淺層海浪和深層洋流是常態(tài)情況。為了合理模擬實(shí)際海洋中波浪及場(chǎng)地中土體的受力及變形特性，本文采用了數(shù)值模擬的方法，主要研究工作和成果如下： (1)介紹了流函數(shù)波浪理論，將流函數(shù)波浪理論計(jì)算得到的部分結(jié)果與線性波理論計(jì)算得到的相關(guān)結(jié)果進(jìn)行了對(duì)比，計(jì)算結(jié)果表明了流函數(shù)理論可以很好的考慮波浪的非線性；初步探討流函數(shù)波浪理論在考慮洋流作用方面的優(yōu)勢(shì)；推導(dǎo)了流函數(shù)波浪在海底的隨時(shí)空分布的波壓力公式，并使用其來模擬波浪荷載； (2)將海床場(chǎng)地看做流體飽和兩相多孔介質(zhì)，基于流體飽和兩相多孔介質(zhì)的彈性波動(dòng)方程組，運(yùn)用顯式逐步積分格式與局部透射人工邊界相結(jié)合的時(shí)域顯式有限元方法，計(jì)算和對(duì)比分析了海床在線性波浪荷載和流函數(shù)波浪荷載作用下的動(dòng)力響應(yīng)； (3)基于流函數(shù)理論計(jì)算了波浪引起的動(dòng)水壓力，并聯(lián)合考慮了地震引起的動(dòng)水壓力，分析動(dòng)水壓力對(duì)土性的影響，基于NERA軟件，依托港珠澳大橋建設(shè)場(chǎng)地的實(shí)例，探討了場(chǎng)地在地震和波浪聯(lián)合作用下的動(dòng)力響應(yīng)。
[Abstract]:All marine engineering construction must be completed on a solid basis. The foundation of ocean engineering is buried in the marine soil environment, the ocean layer is porous and multiphase medium, and the shallow wave and deep ocean current are the normal conditions. In order to simulate the force and deformation characteristics of wave and soil in the real ocean reasonably, the numerical simulation method is used in this paper. The main research work and results are as follows: 1) the wave theory of current function is introduced, and some results obtained by wave theory of current function are compared with those obtained by linear wave theory. The results show that the theory of current function can take into account the nonlinearity of wave. This paper discusses the advantages of wave theory of current function in considering the action of ocean currents, deduces the wave pressure formula of wave distribution at any time in the sea floor, and uses it to simulate wave loads. The seabed site is regarded as a fluid-saturated two-phase porous medium. Based on the elastic wave equations of fluid-saturated two-phase porous media, a time-domain explicit finite element method combining the explicit stepwise integral scheme and the local transmission artificial boundary is used. The dynamic response of the seabed under the action of linear wave load and current function wave load is calculated and compared. 3) based on the theory of current function, the dynamic water pressure caused by waves is calculated, and the dynamic water pressure caused by earthquake is considered jointly, and the influence of dynamic water pressure on soil property is analyzed. Based on NERA software, the construction site of Hong Kong-Zhuhai-Macao Bridge is used as an example. The dynamic response of the site under the combined action of earthquake and wave is discussed.
【學(xué)位授予單位】：北京工業(yè)大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：P731.22;P75

【參考文獻(xiàn)】

相關(guān)期刊論文 前4條

1 門福錄;波在飽含流體的孔隙介質(zhì)中的傳播問題[J];地球物理學(xué)報(bào);1981年01期

2 徐文駿，郭建;流體飽和多孔介質(zhì)中彈性波的數(shù)值模擬[J];地球物理學(xué)報(bào);1994年S2期

3 趙成剛,閆華林,李偉華,李亮;考慮耦合質(zhì)量影響的飽和多孔介質(zhì)動(dòng)力響應(yīng)分析的顯式有限元法[J];計(jì)算力學(xué)學(xué)報(bào);2005年05期

4 劉崇權(quán)，楊志強(qiáng)，汪稔;鈣質(zhì)土力學(xué)性質(zhì)研究現(xiàn)狀與進(jìn)展[J];巖土力學(xué);1995年04期

，

本文編號(hào)：1924846