非黏结柔性立管轴对称载荷作用下的结构响应和数值分析

doi:10.7623/syxb201504012

石油学报 ›› 2015, Vol. 36 ›› Issue (4): 504-510,515.DOI: 10.7623/syxb201504012

非黏结柔性立管轴对称载荷作用下的结构响应和数值分析

郭有松¹, 陈希恰², 王德禹¹, 付世晓¹

1. 上海交通大学海洋工程国家重点实验室上海 200240;
2. 中海石油(中国)有限公司天津分公司渤海石油研究院天津 300452

收稿日期:2014-09-21 修回日期:2015-01-15 出版日期:2015-04-25 发布日期:2015-04-04
通讯作者: 王德禹,男,1963年12月生,1982年获太原工学院学士学位,1992年获太原工业大学博士学位,现为上海交通大学教授、博士生导师,主要从事船舶与海洋工程结构物强度、疲劳分析研究工作。Email:dywang@sjtu.edu.cn
作者简介:郭有松,男,1974年12月生,1998年获大连水产学院船舶工程专业学士学位,现为上海交通大学博士研究生,主要从事海洋工程结构物强度与疲劳分析研究工作。Email:guoyousong@sjtu.edu.cn
基金资助:
国家自然科学基金项目(No.51279101,No.51239007)资助。

Analytical and numerical investigation on the structural response of flexible risers under axisymmetric load

Guo Yousong¹, Chen Xiqia², Wang Deyu¹, Fu Shixiao¹

1. State Key Laboratory of Ocean Engineering, Shanghai Jiao Tong University, Shanghai 200240, China;
2. Bohai Oilfield Research Institute, Tianjin Branch, CNOOC China Limited, Tianjin 300452, China

Received:2014-09-21 Revised:2015-01-15 Online:2015-04-25 Published:2015-04-04

摘要/Abstract

摘要：

轴对称载荷是柔性立管的主要受载形式,由于结构组成的复杂性,柔性立管在轴对称载荷作用下的结构响应往往难以确定。基于静力平衡、变形协调以及本构关系,推导出了能够准确预报柔性立管轴对称响应的理论模型,该模型考虑了立管层间接触压力和层间间隙相互排斥的关系,因而可以分析载荷施加方向对结构响应的影响;同时,为了更真实模拟柔性立管的力学特性,在ABAQUS软件中建立了具有详细截面形式的柔性立管数值模型;基于建立的理论模型和数值模型,分析了柔性立管在拉伸、扭转以及内、外压作用下的结构响应,并将计算结果与实验结果进行了对比分析。研究表明,提出的理论模型和数值模型能够准确预报柔性立管在轴对称载荷作用下的力学特性,可为工程设计提供参考依据。

关键词: 柔性立管, 轴对称响应, 理论模型, 数值模型, 层间间隙, 实验对比

Abstract:

Based on equilibrium conditions, geometrical relations and constitutive equations, the analytical model is deduced in this paper to predict the axisymmetric behavior of the flexible riser. This model takes the mutual exclusion relationship between the contact pressure and interlayer gap into consideration, hence, the influence of the force direction on the structure behavior can be analyzed. Meanwhile, the detailed finite element model of the flexible riser is established in software ABAQUS. Based on the analytical model and the numerical model, the structural response of a typical flexible riser under axisymmetric load is studied. The calculated results are compared with the experimental data obtained from literature and a good agreement is found. Studies show that the proposed analytical and numerical models can provide an approach to analyzing and designing flexible risers.

Key words: flexible riser, axisymmetric response, analytical model, numerical model, gap between layers, comparison with the experimental data

中图分类号:

TE53

郭有松, 陈希恰, 王德禹, 付世晓. 非黏结柔性立管轴对称载荷作用下的结构响应和数值分析[J]. 石油学报, 2015, 36(4): 504-510,515.

Guo Yousong, Chen Xiqia, Wang Deyu, Fu Shixiao. Analytical and numerical investigation on the structural response of flexible risers under axisymmetric load[J]. Acta Petrolei Sinica, 2015, 36(4): 504-510,515.

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非黏结柔性立管轴对称载荷作用下的结构响应和数值分析

Analytical and numerical investigation on the structural response of flexible risers under axisymmetric load

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