本文選題：自升式鉆探平臺 + 總布置��； 參考：《大連海洋大學(xué)》2015年碩士論文

【摘要】：論文研究工作是基于浮體靜力學(xué)、波浪理論、結(jié)構(gòu)有限元分析方法,研究了自升式海洋鉆探平臺設(shè)計方法、設(shè)計開發(fā)了一種用于近海和沿岸工程勘探的新型、多功能、高效作業(yè)平臺,為近海和沿岸能源開發(fā)、地質(zhì)勘探、地基基礎(chǔ)工程提供了專業(yè)工程裝備。論文研究內(nèi)容是自升式鉆探平臺開發(fā)設(shè)計研究,它綜合考慮了360度風(fēng)浪流載荷作用,探索開發(fā)了新型海洋工程裝備、突破設(shè)計主要技術(shù),為可移動的自升式鉆探平臺結(jié)構(gòu)優(yōu)化提供科學(xué)依據(jù)。論文主要研究內(nèi)容如下:(1)查閱了自升式海洋平臺裝備開發(fā)研究進(jìn)展,梳理了相關(guān)設(shè)計與建造技術(shù)的主要問題,將可移動的自升式海洋平臺的主要尺度要素與總體布置設(shè)計、漂浮拖航穩(wěn)性、設(shè)計工況及載荷、平臺結(jié)構(gòu)強(qiáng)度分析等方面作為主要技術(shù)進(jìn)行研究,構(gòu)建了適用于近海與沿岸使用的自升式海洋平臺裝備開發(fā)的設(shè)計軟件平臺系統(tǒng)。(2)根據(jù)設(shè)計需求和海洋平臺設(shè)計規(guī)范,確定了自升式海洋鉆探平臺的主要尺度,對平臺的整體布局和空間劃分進(jìn)行了規(guī)劃設(shè)計,給出了樁腿及固樁區(qū)、懸臂梁、吊機(jī)基座等主要結(jié)構(gòu)布局,確定平臺總體布置形式及總布置圖,為后續(xù)的設(shè)計開發(fā)及主要技術(shù)研究提供基礎(chǔ)。(3)基于五階斯托克斯波浪理論,編程計算了平臺樁腿波浪載荷,使波浪載荷分析更加精確;依據(jù)設(shè)計規(guī)范進(jìn)行各工況下的風(fēng)和海流載荷計算;在艙容計算及空間布置基礎(chǔ)上,計算遷航及站立工況的重量與重心,提高平臺的可變載荷。各工況的載荷計算和歸類整理,為后續(xù)平臺穩(wěn)性校核和結(jié)構(gòu)強(qiáng)度分析提供計算輸入和邊界條件。(4)針對移動、自升式平臺特點(diǎn),考慮了自由縱傾狀態(tài)的大傾角橫穩(wěn)性計算、破艙穩(wěn)性計算和極限重心高度曲線計算,使計算模型比固定縱傾的傳統(tǒng)計算模型更加符合實(shí)際浮態(tài),提高了平臺拖航穩(wěn)性計算精度和拖航安全性�？紤]360度風(fēng)浪流載荷作用,計算了最危險載荷作用方向下的站立穩(wěn)性,更加全面分析了平臺的站立穩(wěn)定性及安全性。(5)考慮到樁腿、固樁區(qū)和吊機(jī)基座結(jié)構(gòu)是自升式平臺的主要結(jié)構(gòu),在載荷計算的基礎(chǔ)上,對平臺結(jié)構(gòu)進(jìn)行整體結(jié)構(gòu)有限元建模,計算網(wǎng)格劃分,以及受力加載分析,分析了平臺結(jié)構(gòu)的整體強(qiáng)度和局部強(qiáng)度,在滿足規(guī)范設(shè)計約束條件下,為平臺結(jié)構(gòu)基本設(shè)計提供計算分析依據(jù),使得平臺設(shè)計更加合理、安全。
[Abstract]:Based on floating body statics, wave theory and structural finite element analysis method, the design method of jack-up offshore drilling platform is studied in this paper. A new type and multifunction for offshore and coastal engineering exploration is designed and developed. High-efficient platform for offshore and coastal energy development, geological exploration, foundation engineering provides professional engineering equipment. The research content of this paper is the development and design of the jack-up drilling platform, which comprehensively considers the effect of 360 degrees wind, wave and current load, explores and develops new marine engineering equipment, and breaks through the main design technology. It provides scientific basis for structure optimization of movable jack-up drilling platform. The main contents of this paper are as follows: (1) reviewing the research progress of the equipment development of the jack-up offshore platform, combing the main problems of the related design and construction technology, the main scale elements and the general layout design of the movable jack-up offshore platform. Floating towing stability, design conditions and loads, platform structure strength analysis and other aspects as the main technology, The design software platform system of jack-up offshore platform equipment development suitable for offshore and coastal use is constructed. According to the design requirements and the design specifications of offshore platform, the main scale of jack-up offshore drilling platform is determined. The overall layout and space division of the platform are planned and designed, and the main structural layout of the pile leg and fixed pile area, cantilever beam, crane base and so on are given, and the general layout and layout of the platform are determined. Based on the five-order Stokes wave theory, the wave loads of the platform pile leg are programmed and calculated, which makes the wave load analysis more accurate. On the basis of the calculation of cabin capacity and space arrangement, the weight and center of gravity of the moving and standing conditions are calculated, and the variable load of the platform is improved. According to the characteristics of moving and bootstrapping platform, the calculation of large inclination angle and lateral stability is considered in view of the characteristics of moving and bootstrapping platform, which provides the calculation input and boundary condition for the subsequent platform stability check and structural strength analysis, according to the characteristics of moving and bootstrapping platform, and takes into account the calculation of large inclination angle and horizontal stability in the state of free pitching. The calculation of damage stability and the limit gravity center height curve make the calculation model more accord with the actual floating state than the traditional calculation model of fixed trim, and improve the accuracy and safety of the platform towing stability calculation. The standing stability in the direction of the most dangerous load is calculated, and the standing stability and safety of the platform are analyzed comprehensively. The fixed pile area and the base structure of the crane are the main structures of the jack-up platform. On the basis of the load calculation, the finite element model of the whole structure of the platform is built, the grid is calculated, and the load is analyzed. The overall strength and local strength of the platform structure are analyzed, and the calculation and analysis basis for the basic design of the platform structure is provided under the constraint condition of the standard design, which makes the platform design more reasonable and safe.
【學(xué)位授予單位】：大連海洋大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：P756.5

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本文編號：2026197