本文選題：法向承力錨　切入點(diǎn)：嵌入過程　出處：《中國(guó)海洋大學(xué)》2014年碩士論文　論文類型：學(xué)位論文

【摘要】：法向承力錨(The Vertically Loaded Anchor),簡(jiǎn)稱VLA,它是一種新型的拖曳錨。由于其在極限嵌入深度有很高的承載力、回收方便可重復(fù)利用等特點(diǎn),同其他種類的錨泊系統(tǒng)相比,在深水環(huán)境中的應(yīng)用有著較為明顯的優(yōu)勢(shì),已經(jīng)成為當(dāng)今世界上應(yīng)用較為廣泛的深水錨泊系統(tǒng)基礎(chǔ)。對(duì)于VLA的研究重點(diǎn)是對(duì)其軌跡和極限嵌入深度的研究,軌跡分析是其在實(shí)際應(yīng)用中結(jié)構(gòu)優(yōu)化的基礎(chǔ)。 本文介紹了VLA的發(fā)展?fàn)顩r及安裝方式,在VLA的整體安裝中強(qiáng)調(diào)了錨板的嵌入過程。重點(diǎn)描述了其在嵌入軌跡和極限嵌入深度中的理論研究。通過分析理論中對(duì)其嵌入軌跡的影響因素,總結(jié)出了外界環(huán)境、自身結(jié)構(gòu)、拖曳方式的影響。以理論分析的結(jié)果為基礎(chǔ),結(jié)合顯示動(dòng)力分析方法軟件LS-DYNA對(duì)其進(jìn)行了建模仿真,并根據(jù)顯示算法的特點(diǎn)結(jié)合其嵌入特性選擇合適的計(jì)算方法。 在建模的初級(jí)階段,首先以理論為基礎(chǔ),進(jìn)而對(duì)模型進(jìn)行簡(jiǎn)化、參數(shù)選擇。選擇在飽和軟粘土的環(huán)境下對(duì)錨板進(jìn)行各個(gè)參數(shù)變量進(jìn)行合理選擇,能夠形成對(duì)軌跡本質(zhì)的有效對(duì)比,重點(diǎn)仍是通過理論得出對(duì)其嵌入軌跡的影響因素。仿真的過程不僅是對(duì)結(jié)論的優(yōu)化補(bǔ)充,還是實(shí)驗(yàn)分析的基礎(chǔ)。 在嵌入過程中通過改變錨板的嵌入狀態(tài)、結(jié)構(gòu)特點(diǎn)及拖曳方式等方法,對(duì)VLA的軌跡進(jìn)行仿真數(shù)據(jù)的分析對(duì)比,通過軌跡的分析對(duì)比、速度的變化特性,分析各個(gè)變量在嵌入過程中的結(jié)果對(duì)比,進(jìn)而選出最高效的嵌入方式,用以在實(shí)際應(yīng)用中整體結(jié)構(gòu)優(yōu)化和嵌入方式的選擇。
[Abstract]:The Vertically Loaded Anchorage (VLA) is a new type of towing anchor. Due to its high bearing capacity at the ultimate depth of embed, the recovery is convenient and reusable, compared with other kinds of anchoring systems. The application in deep-water environment has obvious advantages and has become the foundation of deep-water mooring system which is widely used in the world today. The research emphasis of VLA is to study its trajectory and limit embedding depth. Trajectory analysis is the basis of structural optimization in practical application. This paper introduces the development and installation of VLA. The embedding process of anchor plate is emphasized in the whole installation of VLA. The theoretical research on the embedded track and the limit depth of the anchor plate is described emphatically. By analyzing the influencing factors of the embedded track in the theory, the external environment and its own structure are summarized. Based on the results of theoretical analysis and the display dynamic analysis software LS-DYNA, this paper models and simulates the effects of towing methods, and selects the appropriate calculation method according to the characteristics of display algorithm and its embedding characteristics. In the initial stage of modeling, based on the theory, the model is simplified and the parameters are selected. In the environment of saturated soft clay, the parameters of the anchor plate are selected reasonably. In order to form an effective contrast to the essence of the trajectory, the emphasis is still on the influence factors of the embedded trajectory through the theory. The simulation process is not only an optimization supplement to the conclusion, but also the basis of the experimental analysis. In the course of embedding, the simulation data of VLA trajectory are analyzed and compared by changing the embedding state, structural characteristics and towing mode of the anchor plate, and by analyzing and contrasting the trajectory, the variation characteristics of the velocity are analyzed and compared. The comparison of the results of each variable in the embedding process is analyzed, and the most efficient embedding method is selected for the optimization of the overall structure and the selection of the embedding mode in the practical application.
【學(xué)位授予單位】：中國(guó)海洋大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：U653.2

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相關(guān)期刊論文 前1條

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本文編號(hào)：1556957