海底管道对接过程数值模拟力学分析  

Numerical Simulation Mechanical Analysis of the Seabed Pipeline Butt Process

作　　者：李成凯[1] 刘衍聪[1] 伊鹏[1] 曲杨[2] 伦冠德[3] 马晓丽[1,4] 谢江浩[1] 

机构地区：[1]中国石油大学(华东)机电工程学院 [2]代尔夫特理工大学土木工程和地球科学学院 [3]潍坊学院 [4]青岛理工大学

出　　处：《石油机械》2014年第3期48-52,71,共6页China Petroleum Machinery

基　　金：国家863计划项目"深水半潜式钻井船设计与建造关键技术"(2006AA09A104);国家自然科学基金项目"船体外板焊接变形激光热力矫正机理与精度控制研究"(51175515);中央高校基本科研业务费专项资金资助项目(13CX02076A);山东省科技发展计划项目(2011GGX10329);中国石油大学(华东)研究生创新工程资助项目(CX-1237)

摘　　要：在分析海底管道对接施工过程的基础上,构建了管道对接过程模型与管道力学模型,采用Abaqus软件对API-5L标准的355.6 mm(14 in)管道建立了海洋管道多点牵引的提吊与沉放力学数值模型,分析管道对接过程的力学特性。分析结果表明,管道提吊过程中,Y轴方向上的线应变在前期提吊过程中逐渐增大,后期在铺管船移动的情况下逐渐减小,Z轴方向上的线应变在提吊高度不断增加的情况下逐渐增大,管道的两舷吊点间管段弯矩呈往复波动变化规律;管道沉放过程中,Y轴方向上的线应变随下放距离和侧移距离的改变而增大,最终维持一个固定的应变量,Z轴方向上的线应变随下放距离和侧移距离改变而起伏波动。On the basis of analyzing the butt operating process of seabed pipeline, the model of pipeline butt process and the mec.hanical model of pipeline were established. The mechanical model for API -5 L 0355.6 mm （ 14 in） offshore pipeline was set up by means of the Abaqus software, and mechanical performance of the pipeline in butt process was analyzed. The analysis result shows that, the linear strain of the pipeline in the direction of Y axis gradually increases in the former-stage lifting process and gradually decreases at the later stage due to the movement of pipe-laying ship. The linear strain in the direction of Z axis gradually increases with the increase of＂ lifting height. The pipe section bending moment on the outboard of the inner side lifting point is characterized by the varia- tion law of reciprocating fluctuation. In the process of pipeline laying, the linear strain in the direction of Y axis in- creases with the change of landing distance and lateral moving distance. Finally, a fixed strain value is main- rained. The linear strain in the direction of Z axis fluctuates with landing distance and lateral moving distance.

关 键 词：海底管道 ABAQUS 提吊过程 沉放过程 管道施工 

分 类 号：TE952[石油与天然气工程—石油机械设备]