深水鋼懸鏈立管管土相互作用及疲勞分析
[Abstract]:A large number of researches and engineering investigations show that the fatigue damage of steel catenary risers is serious and is one of the key factors affecting the design of risers. In practical engineering projects, a conservative method is usually used, in which the interaction between pipe and soil is simulated by linear spring. More accurate numerical simulation needs to establish a nonlinear model which can describe the interaction between pipe and soil more realistically. In this paper, the tube-soil interaction process is simulated by using ABAQUS display dynamic analysis. The skeleton curve of pipe-soil interaction and the curve of force and displacement under single cyclic displacement are obtained, which are consistent with the results of NGI experiment, and the cohesive force of soil is discussed. The influence of friction angle, diameter of riser and wall thickness of riser on tube-soil interaction. Based on the vertical numerical pipe-soil interaction curve model and the transverse tube-soil interaction Coulomb friction model, the nonlinear dynamic analysis model of steel catenary riser is established by secondary development of nonlinear tube-soil interaction unit. The configuration, stress and fatigue life of the riser in the contact area are studied, and the influence of the parameters on the fatigue life is analyzed. The results show that the cohesive force, friction angle and the diameter of riser have a significant effect on the pipe-soil interaction. With the increase of these parameters, the soil reaction under the same displacement of riser increases. The embankment of the contact area is deeply influenced by the soil parameters and the design parameters of the riser, and the movement of the platform has a great influence on the location and range of the contact area. The increase of soil cohesion, friction angle and the outer diameter of riser will lead to the increase of fatigue damage, but the increase of wall thickness of the riser is beneficial to the fatigue of the pipe. In the motion of three directions of the platform, the pendulum has the greatest influence on the contact area of the pipe, and the cyclic displacement in this direction leads to the most serious fatigue damage in the contact area of the riser, and it is more likely to lead to the expansion of the contact area and increase the range of the large fatigue damage.
【學位授予單位】:哈爾濱工程大學
【學位級別】:碩士
【學位授予年份】:2016
【分類號】:P756.2
【參考文獻】
相關期刊論文 前10條
1 董永強;宋儒鑫;孫麗萍;;深水鋼懸鏈立管疲勞壽命評估分析[J];海洋工程;2014年02期
2 REZAZADEH Kosar;陸鈺天;白勇;唐繼蔚;;鋼懸鏈線立管與海底相互作用和疲勞分析[J];哈爾濱工程大學學報;2014年02期
3 梁勇;金志江;葉皓;顏孫挺;;深海鋼懸鏈立管管土相互作用研究進展[J];船舶工程;2013年06期
4 任艷榮;;彈塑性海床上海底管道的穩(wěn)定性分析[J];船海工程;2013年05期
5 武銳鋒;李敢;黃小平;;考慮溝槽深度及土體吸力影響的SCR與海床土體循環(huán)作用分析[J];船舶力學;2013年07期
6 王坤鵬;薛鴻祥;唐文勇;;基于海床吸力和剛度衰減模型的深海鋼懸鏈線立管動力響應分析[J];上海交通大學學報;2011年04期
7 白興蘭;黃維平;;考慮海床土吸力的SCR-Spar整體波浪響應分析[J];海洋工程;2010年02期
8 郭海燕;高秦嶺;王小東;;鋼懸鏈線立管與海床土體接觸問題的ANSYS有限元分析[J];中國海洋大學學報(自然科學版);2009年03期
9 傅俊杰;楊和振;;深海鋼懸鏈立管觸地點動力響應分析[J];海洋工程;2009年02期
10 杜金新;Low Y M;;海洋立管-海床土體接觸作用數(shù)值分析[J];工程地質(zhì)計算機應用;2008年04期
相關會議論文 前1條
1 陳景皓;匡濤;段夢蘭;牙乾伊;;基于非線性管土相互作用的深水鋼懸鏈線立管疲勞特性分析[A];第九屆中國CAE工程分析技術年會專輯[C];2013年
相關碩士學位論文 前4條
1 楊超凡;鋼懸鏈式立管與海床土非線性相互作用研究[D];中國海洋大學;2014年
2 梁勇;鋼懸鏈線立管觸地段管土作用研究[D];浙江大學;2014年
3 彭們;深水鋼懸鏈線立管與海床間的相互作用研究[D];天津大學;2012年
4 傅俊杰;深海鋼懸鏈立管動力分析及觸地點疲勞特性評估[D];上海交通大學;2010年
,本文編號:2296439
本文鏈接:http://sikaile.net/kejilunwen/haiyang/2296439.html