本文選題：船舶建造 + 快速搭載�。� 參考：《江蘇科技大學(xué)》2014年碩士論文

【摘要】：隨著世界金融危機(jī)的深度影響，以及歐債危機(jī)、船舶融資緊張等因素的限制，造船產(chǎn)業(yè)呈現(xiàn)“復(fù)雜多變”的局面，船舶的造價(jià)和規(guī)范要求在提高，而船舶的價(jià)格卻不斷創(chuàng)歷史新低，船舶的制造企業(yè)的利益被不斷的壓縮�，F(xiàn)在中國已經(jīng)出現(xiàn)小船廠不支倒地、大船廠勉力苦撐的困境。從船舶建造環(huán)節(jié)分析技術(shù)是制約生產(chǎn)效率的主要因素。對我國的船舶企業(yè)來說，提高船舶建造的生產(chǎn)效率和縮短造船周期是中國造船業(yè)走出困境、增強(qiáng)競爭力的主要途徑。本文主要通過研究船舶快速搭載中分段彈性變形的控制，從而實(shí)現(xiàn)減少分段吊裝的時(shí)間縮短造船的周期，為快速搭載打好基礎(chǔ)。 本文首先總結(jié)了與快速搭載相關(guān)的技術(shù)和先進(jìn)測量技術(shù)，為后面改進(jìn)總組和吊裝方案及精度測量提供依據(jù)。其次針對76,000DWT散貨船機(jī)艙區(qū)半立體分段EZ31P（EG31P+EG32P）在船臺(tái)總組和吊裝過程中變形過大的問題，，進(jìn)行變形實(shí)際測量和有限元數(shù)值仿真計(jì)算，然后改進(jìn)分段的總組支撐和搭載吊裝加強(qiáng)方案，并將方案應(yīng)用到現(xiàn)場施工中，測量得到分段變形已控制到精度許可范圍。最后，根據(jù)吊裝設(shè)計(jì)基本要素和分段總組和劃分的原則，重新設(shè)計(jì)分段總組和吊裝方案。本文的主要研究工作及結(jié)論如下： （1）討論了船舶快速搭載中相關(guān)的技術(shù)。分別對平臺(tái)快速總組、計(jì)算機(jī)模擬搭載、吊車快速松鉤、先進(jìn)測量技術(shù)及應(yīng)用等技術(shù)進(jìn)行介紹，給出分段在變形測量和改進(jìn)總組、吊裝方案時(shí)的原則和方法，對后面進(jìn)行分段變形測量和改進(jìn)總組、吊裝方案具有指導(dǎo)意義。 （2）針對76,000DWT散貨船機(jī)艙區(qū)半立體分段EZ31P（EG31P+EG32P）在船臺(tái)總組和吊裝過程中變形過大的問題，采用有限元數(shù)值仿真計(jì)算了其實(shí)際總組支撐和搭載吊裝狀態(tài)下的應(yīng)力和變形情況，得到與現(xiàn)場測量較為一致的結(jié)果，通過改進(jìn)總組支撐方案和吊裝加強(qiáng)方案，控制分段彈性變形，并將方案應(yīng)用到現(xiàn)場的總組和吊裝過程中，測量得到分段的變形已控制到精度許可范圍。 （3）同樣針對分段EZ31P在船臺(tái)總組和吊裝過程中變形較大的問題，根據(jù)吊裝設(shè)計(jì)基本要素和分段總組和劃分的原則，重新設(shè)計(jì)分段總組和吊裝方案，將EG31P、EG32P、EG31S、EG32S四個(gè)分段總組成全寬型分段EZ31，這樣來增加分段的縱向強(qiáng)度使分段在吊裝時(shí)不需要增加臨時(shí)加強(qiáng)措施，并采用有限元數(shù)值仿真計(jì)算了其總組支撐和搭載吊裝狀態(tài)下的強(qiáng)度進(jìn)行驗(yàn)算，得到分段的應(yīng)力和變形情況都在要求的范圍內(nèi)。
[Abstract]:With the deep influence of the world financial crisis, the restriction of European debt crisis and the shortage of ship financing, the shipbuilding industry presents a "complex and changeable" situation, and the cost and standard requirements of ships are increasing. However, the price of ships is constantly low, and the interests of shipbuilding enterprises are constantly compressed. Now China has a small shipyard not to fall to the ground, large shipyards struggling to support the plight. The analysis technology of ship construction is the main factor that restricts the production efficiency. For the shipbuilding enterprises in China, it is the main way to improve the production efficiency and shorten the shipbuilding cycle for the shipbuilding industry to get out of the predicament and enhance the competitiveness of the shipbuilding industry. In this paper, the control of segmental elastic deformation in the rapid loading of ships is studied, so as to reduce the time of subsection hoisting and shorten the period of shipbuilding, thus laying a good foundation for rapid loading. This paper first summarizes the technology and advanced measurement technology related to fast loading, which provides the basis for improving the general group, hoisting scheme and precision measurement. Secondly, aiming at the problem of excessive deformation in the ship deck assembly and hoisting process of the semi-stereoscopic segment EZ31P(EG31P EG32P of the 76000DWT bulk carrier engine room area, the actual deformation measurement and finite element numerical simulation calculation are carried out, and then the general group support and hoisting strengthening scheme of the segment is improved. The method is applied to the field construction, and the segmental deformation is controlled to the precision allowable range. Finally, according to the basic elements of hoisting design and the principle of partition, the general group and hoisting scheme are redesigned. The main research work and conclusions are as follows: This paper discusses the related technologies in the rapid loading of ships. This paper introduces the rapid general group of the platform, the computer simulation and loading, the quick loosening of the crane, the advanced measurement technology and its application, etc. The principles and methods of the subsection deformation measurement and improvement of the general group and the lifting scheme are given. The hoisting scheme is of guiding significance for segment deformation measurement and improvement of the general group. Aiming at the problem of excessive deformation of 76000DWT bulk carrier EZ31P(EG31P EG32P in the ship deck assembly and hoisting process, the stress and deformation of 76000DWT bulk carrier under the condition of support and hoisting are calculated by finite element numerical simulation. The results are consistent with the field measurements. By improving the support scheme and hoisting strengthening scheme, the elastic deformation is controlled, and the scheme is applied to the whole group and the hoisting process. The deformation of the measured segments has been controlled to a precision allowable range. (3) in view of the problem that segmented EZ31P is deformed in the course of ship deck assembly and hoisting, according to the basic elements of hoisting design and the principle of subsection group and division, the piecewise general group and hoisting scheme are redesigned. The four segments EG31P, EG31S, EG32S are made up of a full-width segment EZ31so as to increase the longitudinal strength of the segment so that no temporary strengthening measures are required for the segment to be hoisted. The finite element numerical simulation is used to calculate the strength of the general support and hoisting state, and the stress and deformation of the segment are all within the required range.
【學(xué)位授予單位】：江蘇科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：U671

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