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南海導管架平臺浮托安裝實測研究

發(fā)布時間:2019-07-01 20:01
【摘要】:隨著工業(yè)發(fā)展對自然資源的消耗,陸地上的石油、天然氣資源日益枯竭,淡水資源也極度貧乏。而在大海的深處恰恰蘊藏著大量的油氣及淡水資源,因此,,海洋工程的發(fā)展,勢必走向深海。 深海資源的開發(fā)需要面對惡劣的海洋環(huán)境,因此需要重量更大,結構更強的海洋結構物才能完成這一任務,而這種結構物的安裝日益受到人們關注。浮托安裝法是針對于特大型海上結構的一種極具發(fā)展前景的安裝方法,它利用潮水變化帶來的巨大浮力,將重量巨大的海上結構從浮托駁船上轉移到預定的支撐結構上,完成安裝過程。 本文以荔灣3-1的浮托安裝的過程為背景,研究對浮托安裝過程的實測技術,并根據實測結果,對浮托安裝的數值預報技術進行對比研究。 進行的主要工作有:利用GPS/INS監(jiān)測駁船六自由度運動;利用X波段測波雷達得到浪、流;利用壓力式潮位儀和機械式風速儀監(jiān)測潮位及風;利用光纖應變片監(jiān)測駁船護舷載荷;監(jiān)測數據的集成顯示;對實測結果的質量進行分析,并將處理后的實測結果應用于浮托數值計算,對比分析出數值計算在預報浮托安裝過程中的可靠性。 得到的主要結論有:本文給出了一套浮托安裝過程中,駁船運動和海洋環(huán)境的精確測量方案;給出了一種經濟有效的護舷載荷估算方法;設計出一套方便于工程應用的數據通訊與集成顯示方案。相應的,成功測量出可靠的實際數據,可應用于對比模型試驗與理論計算結果;通過與理論計算的對比分析,得出通過采取合理的數值波浪模型及粘性阻尼系數,時域分析方法能夠較為可靠的預報浮托駁船的波頻運動情況的結論。
[Abstract]:With the consumption of natural resources by industrial development, the oil and natural gas resources on land are exhausted day by day, and the fresh water resources are also extremely poor. There are a lot of oil and gas and fresh water resources in the depths of the sea, therefore, the development of marine engineering is bound to go to the deep sea. The development of deep-sea resources needs to face the bad marine environment, so it needs heavier and stronger marine structures to complete this task, and the installation of this kind of structures has attracted more and more attention. Float installation method is a promising installation method for super large offshore structures. it transfers the heavy offshore structure from the buoy barge to the predetermined support structure by using the great buoyancy caused by the tide change, and completes the installation process. In this paper, based on the installation process of the float in Liwan 3 / 1, the measured technology of the installation process of the float is studied, and the numerical prediction technology of the installation of the float is compared according to the measured results. The main work is as follows: using GPS/INS to monitor the movement of barge with six degrees of freedom; using X-band wave radar to get waves and currents; using pressure tidal level gauge and mechanical anemometer to monitor tide level and wind; using optical fiber strain gauge to monitor barge fender load; integrated display of monitoring data; The quality of the measured results is analyzed, and the processed measured results are applied to the numerical calculation of the float, and the reliability of the numerical calculation in the process of predicting the installation of the float is compared and analyzed. The main conclusions are as follows: in this paper, a set of accurate measurement scheme of barge motion and marine environment in the process of float installation is given, an economical and effective method of fender load estimation is given, and a set of data communication and integrated display scheme is designed, which is convenient for engineering application. Accordingly, reliable practical data can be successfully measured, which can be applied to compare the results of model test and theoretical calculation, and through the comparative analysis with theoretical calculation, it is concluded that the time domain analysis method can predict the wave frequency motion of buoy barge more reliably by adopting reasonable numerical wave model and viscous damping coefficient.
【學位授予單位】:上海交通大學
【學位級別】:碩士
【學位授予年份】:2014
【分類號】:P742

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