本文選題：浮臺　切入點(diǎn)：設(shè)計(jì)波　出處：《哈爾濱工業(yè)大學(xué)》2017年碩士論文　論文類型：學(xué)位論文

【摘要】：隨著南海問題的不斷發(fā)酵,維護(hù)我國海洋權(quán)益的問題越來越重要,而目前我國海上的監(jiān)測主要靠的是半潛式海洋平臺與海洋資料浮標(biāo)。然而,海洋平臺過于龐大,對于海上監(jiān)測的任務(wù)來說,經(jīng)濟(jì)性與靈活性不足。海洋資料浮標(biāo)由于體積較小,觀測的能力有限。二者都不足以對海洋進(jìn)行更為高效的觀測,于是,一種新型的海洋結(jié)構(gòu)物柱穩(wěn)式錨泊電子信息浮臺應(yīng)運(yùn)而生。由于此浮臺在世界上是首例,并沒有直接的規(guī)范參考,因此,本文對柱穩(wěn)式錨泊電子信息浮臺的結(jié)構(gòu)合理性做了校核與優(yōu)化工作,主要內(nèi)容如下:(1)對浮臺的結(jié)構(gòu)按照如下步驟做了總體強(qiáng)度計(jì)算:首先,根據(jù)浮臺的結(jié)構(gòu)特點(diǎn)確定了浮臺典型的4種工況;然后根據(jù)設(shè)計(jì)波理論對設(shè)計(jì)波進(jìn)行了分析得到了各種典型工況下設(shè)計(jì)波的參數(shù)并由設(shè)計(jì)波得到各個(gè)工況下的波浪載荷;最后,用有限元計(jì)算法計(jì)算波浪載荷作用下的浮臺結(jié)構(gòu)的總體強(qiáng)度,并將計(jì)算的結(jié)果與需用應(yīng)力進(jìn)行對比來判定浮臺的強(qiáng)度。(2)對受到錨鏈力影響的浮臺局部結(jié)構(gòu)按照如下的步驟進(jìn)行了強(qiáng)度校核:首先,利用AQWA軟件對浮臺的水動(dòng)力模型進(jìn)行時(shí)域頻域的分析,得到了在百年一遇的作用下浮臺所受的最大錨鏈力;然后通過對局部的結(jié)構(gòu)施加錨鏈力的作用得到了局部結(jié)構(gòu)的所受的最大應(yīng)力,通過與相關(guān)標(biāo)準(zhǔn)的核對,證明了系泊結(jié)構(gòu)的安全性。(3)為了降低錨鏈力,本文針對系泊系統(tǒng)進(jìn)行了優(yōu)化,先是對比了四種纜索的方案,從中選取了較優(yōu)秀的方案;然后通過目標(biāo)驅(qū)動(dòng)的優(yōu)化設(shè)計(jì),得到了最優(yōu)的纜索重量和纜索長度;最后對最優(yōu)設(shè)計(jì)的參數(shù)和原方案分別在五級海況和百年一遇的海況下的核算得到了新的系泊方案的改善程度。
[Abstract]:With the continuous development of the South China Sea problem, it is more and more important to safeguard the marine rights and interests of our country. At present, the monitoring at sea in China mainly depends on semi-submersible offshore platforms and ocean data buoys. However, the offshore platforms are too large. For the task of monitoring at sea, economy and flexibility are not enough. Because of their small size and limited observation capacity, ocean data buoys are not sufficient for more efficient observation of the ocean, so, A new type of marine structure column stabilized anchor electronic information floating platform emerges as the times require. As this floating platform is the first in the world and has no direct normative reference, so, In this paper, the structural rationality of the column stabilized anchor electronic information floating platform is checked and optimized. The main contents are as follows: (1) the overall strength of the floating platform is calculated according to the following steps: first, According to the structural characteristics of the floating platform, the typical four working conditions of the floating platform are determined, and then the parameters of the design wave under various typical working conditions are analyzed according to the design wave theory and the wave loads under each working condition are obtained from the design wave. The overall strength of floating platform structure under wave loads is calculated by finite element method. The calculated results are compared with the required stress to determine the strength of the floating platform. (2) the local structure of the floating platform affected by the anchor chain force is checked according to the following steps: first, The hydrodynamic model of floating platform is analyzed in time domain and frequency domain by using AQWA software, and the maximum anchor chain force of floating platform is obtained under the action of once in a hundred years. Then the maximum stress of the local structure is obtained by applying the anchor chain force to the local structure. The safety of the mooring structure is proved by checking with the relevant standards. In this paper, the mooring system is optimized. Firstly, four kinds of cable schemes are compared, and the better scheme is selected, then the optimum cable weight and cable length are obtained by the optimization design of target drive. Finally, the new mooring scheme is improved by the calculation of the parameters of the optimal design and the original scheme under the sea conditions of five levels and one hundred years, respectively.
【學(xué)位授予單位】：哈爾濱工業(yè)大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：P715

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本文編號：1622044