發(fā)布時間：2018-06-16 19:54

  本文選題：ANSYS軟件 + 導(dǎo)管架平臺　； 參考：《中國地質(zhì)大學(xué)(北京)》2015年碩士論文

【摘要】：石油、天然氣資源在我國的能源結(jié)構(gòu)中占據(jù)的比重較大,近年來,我國加大了海上油氣資源的投資力度。作為開發(fā)海上石油的重要工具之一的導(dǎo)管架平臺應(yīng)用越來越廣泛,因而對其結(jié)構(gòu)的安全可靠性以及最佳的經(jīng)濟(jì)效益,在產(chǎn)品的設(shè)計(jì)、使用、檢測以及維護(hù)等環(huán)節(jié)意志備受關(guān)注。現(xiàn)在,系統(tǒng)可靠性理論發(fā)展相對較為成熟,被廣泛應(yīng)用在各領(lǐng)域中。在疲勞的積累效應(yīng)作用下導(dǎo)管架平臺結(jié)構(gòu)在使用過程中會由于損傷,導(dǎo)致可靠性能降低。因此,研究海上平臺結(jié)構(gòu)的疲勞可靠性問題具有重大的意義。本文根據(jù)渤海灣海域的環(huán)境條件,通過ANSYS有限元分析軟件進(jìn)行建模,通過數(shù)值模擬對導(dǎo)管架平臺的疲勞壽命以及可靠度進(jìn)行研究分析。本文通過建立平臺結(jié)構(gòu)的數(shù)值模型,分析模型的主要參數(shù)對結(jié)構(gòu)的影響。并建立了樁-非線性模型,分析了樁的軸向和橫向承載力對平臺結(jié)構(gòu)的影響。在以上研究的基礎(chǔ)上,對平臺結(jié)構(gòu)的安全載荷進(jìn)行了重點(diǎn)研究,分析了平臺所受到的固定載荷、活載荷和環(huán)境載荷參數(shù),為平臺整體受到的工況進(jìn)行了研究。此外,對平臺的結(jié)構(gòu)進(jìn)行了靜力評價和動力評價,并重點(diǎn)研究了船舶碰撞過程中的能量和受力分析,并進(jìn)行了樁基的承載力評價。最后,對平臺剩余壽命進(jìn)行了評價,驗(yàn)證了管節(jié)點(diǎn)在疲勞載荷下的疲勞壽命滿足了工程設(shè)計(jì)要求。
[Abstract]:Oil and natural gas resources occupy a large proportion in China's energy structure. In recent years, China has increased the investment of offshore oil and gas resources. As one of the important tools for offshore oil development, jacket platform is more and more widely used. Therefore, the safety and reliability of its structure and the best economic benefits are paid more and more attention to in the design, use, detection and maintenance of products. At present, the system reliability theory is relatively mature and widely used in various fields. Under the effect of fatigue accumulation, the reliability of jacket platform structure will be reduced due to damage. Therefore, it is of great significance to study the fatigue reliability of offshore platform structures. According to the environmental conditions of Bohai Bay, the finite element analysis software ANSYS is used to model the fatigue life and reliability of jacket platform. In this paper, the influence of the main parameters of the model on the structure is analyzed by establishing the numerical model of the platform structure. The pile-nonlinear model is established, and the influence of the axial and lateral bearing capacity of the pile on the platform structure is analyzed. On the basis of the above research, the safety load of the platform structure is studied, and the fixed load, live load and environment load parameters are analyzed. In addition, the static and dynamic evaluation of the structure of the platform is carried out, and the analysis of the energy and force during the collision process of the ship is emphasized, and the bearing capacity of the pile foundation is evaluated. Finally, the residual life of the platform is evaluated, and it is verified that the fatigue life of the pipe joints under fatigue load meets the engineering design requirements.
【學(xué)位授予單位】：中國地質(zhì)大學(xué)(北京)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TE95

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本文編號：2027917