哈尔滨工程大学学报2015，Vol.36Issue(9)：1170-1176,7.DOI:10.11990/jheu.201407009
悬链线和大变形梁理论的J型铺设研究
Analysis of J lay installation of a steel catenary riser based on catenary and large deflection beam theory
摘要
Abstract
In order to obtain an analytic method for J lay installation, a static analysis was made of the J lay installa-tion process of a deepwater steel catenary riser, then introduced an optimized model called the piecewise mechanics model. First the catenary model based on the catenary theory was established and solved. Then the riser was compu-ted piece by piece, based on the catenary model, applying large deflection beam theory for the area with large de-formation, and developed asymptotically the 2nd-order nonlinear differential control equation on the basis of a sin-gular perturbation equation. This process was repeated using catenary theory for the remaining areas. Last, the re-sults of the two parts were combined into an overall solution. A comparison of the piecewise mechanics model with the catenary riser theory and large-deflection beam theory, shows that the piecewise mechanics model meets the boundary conditions very well, the computation result matches the result of high-precision large-deformation beam theory. The piecewise mechanics model can also be used to analyze the influence of wet weight and stiffness on pa-rameter sensitivity.关键词
钢悬链立管/J型铺设/悬链线/大变形梁/摄动法/分段力学模型Key words
steel catenary riser/J lay/catenary method/large deflection beam/perturbation/piecewise mechanics model分类
数理科学引用本文复制引用
康庄,张立,张翔..悬链线和大变形梁理论的J型铺设研究[J].哈尔滨工程大学学报,2015,36(9):1170-1176,7.基金项目
国家科技重大专项基金资助项目（2011ZX05027-002-004-008）． （）
