深水半潜平台聚酯缆非线性刚度模拟分析
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摘要
为了解深水半潜平台系泊系统聚酯缆不同张力状态下轴向刚度非线性特性,采用聚酯缆静态-动态刚度模拟方法,利用聚酯缆静态刚度作为初始输入,通过时域分析获取动态刚度及长度,对不同环境条件作用下,不同位置聚酯缆重新设置独立动态刚度及长度进行二次时域分析,计算半潜平台系泊系统受力及运动,与其他模拟方式计算结果对比表明,本文方法可以较为准确地反映半潜平台运动和系泊系统受力,降低计算量,提高设计效率。
Aiming at the simulation of the nonlinear characteristics of polyester cable under different tension conditions in the deep-water semi-submersible platform mooring system, the static-dynamic stiffness simulation method of polyester cable was adopted. Using polyester cable static stiffness as the initial input, dynamic stiffness and length were obtained by time domain analysis, re-setting the dynamic stiffness and length for each polyester cable under different environmental conditions to carry out the second time domain analysis. The effective tensions and motions of the semi-submersible platform mooring system were calculated. The results were compared with that of other simulation methods, showing that the proposed method can both accurately reflect the motions of the semi-submersible platform and tensions of the mooring system, so as to reduce the calculation and improve the design efficiency.
Aiming at the simulation of the nonlinear characteristics of polyester cable under different tension conditions in the deep-water semi-submersible platform mooring system, the static-dynamic stiffness simulation method of polyester cable was adopted. Using polyester cable static stiffness as the initial input, dynamic stiffness and length were obtained by time domain analysis, re-setting the dynamic stiffness and length for each polyester cable under different environmental conditions to carry out the second time domain analysis. The effective tensions and motions of the semi-submersible platform mooring system were calculated. The results were compared with that of other simulation methods, showing that the proposed method can both accurately reflect the motions of the semi-submersible platform and tensions of the mooring system, so as to reduce the calculation and improve the design efficiency.
引文
[1] 刘杰鸣,王世圣,冯玮,等.深水油气开发工程模式及其在我国南海的适应性探讨[J].中国海上油气,2006,18(6):413-418.
[2] 国振,王立忠,李玲玲.新型深水系泊基础研究进展[J].岩土力学,2011,32(2):469-477.
[3] 赵晶瑞,冯玮,李迅科.深水多点系泊系统发展现状[J].石油矿场机械,2013,42(5):1-7.
[4] 丁海建,钱佳煜,陶俊.缆绳非线性刚度对深海系泊系统的影响[J].船舶工程,2015,37(4):84-88.
[5] Del Vecchio C.J.M. Light weight materials for deep water moorings[D]. UK:University of Reading,1992.
[6] KIM Min Suk. Dynamic simulation of polyester mooring lines[D].MS Dissertation,Houston:Texas A&M University,2004.
[7] ABS Technical report TR-2010-03. Polyester rope stiffness modeling, testing, and analysis[R]. ABS JIP Phase 1 report,ABS,2010.
[8] 姜钧喆,陈新权.深水半潜式平台聚酯缆张紧式系泊研究[J].中国海洋平台,2015,30(6):78-85.
[9] ABS. Guidance notes on the application of fiber rope for offshore mooring[S].ABS,2011.
[10] DEVOS K, DE PLUKKER C, VDB Peter. Experiences in rope design for offshore renewable energy projects[C]. Proceedings of the 16th Offshore Symposium, Houston, Texas. 2010.
[11] API RP 2SK. Design and analysis of station keeping systems for floating structures[S]. 2005.
[2] 国振,王立忠,李玲玲.新型深水系泊基础研究进展[J].岩土力学,2011,32(2):469-477.
[3] 赵晶瑞,冯玮,李迅科.深水多点系泊系统发展现状[J].石油矿场机械,2013,42(5):1-7.
[4] 丁海建,钱佳煜,陶俊.缆绳非线性刚度对深海系泊系统的影响[J].船舶工程,2015,37(4):84-88.
[5] Del Vecchio C.J.M. Light weight materials for deep water moorings[D]. UK:University of Reading,1992.
[6] KIM Min Suk. Dynamic simulation of polyester mooring lines[D].MS Dissertation,Houston:Texas A&M University,2004.
[7] ABS Technical report TR-2010-03. Polyester rope stiffness modeling, testing, and analysis[R]. ABS JIP Phase 1 report,ABS,2010.
[8] 姜钧喆,陈新权.深水半潜式平台聚酯缆张紧式系泊研究[J].中国海洋平台,2015,30(6):78-85.
[9] ABS. Guidance notes on the application of fiber rope for offshore mooring[S].ABS,2011.
[10] DEVOS K, DE PLUKKER C, VDB Peter. Experiences in rope design for offshore renewable energy projects[C]. Proceedings of the 16th Offshore Symposium, Houston, Texas. 2010.
[11] API RP 2SK. Design and analysis of station keeping systems for floating structures[S]. 2005.