柔性管道铺设上弯段接触荷载的参数分析

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摘要

在进行水平式铺设时,柔性管道的上弯段将受到显著的接触荷载,导致管道的挤压失效,从而限制了这种铺设方式所能达到的水深。因此,对柔性管道铺设上弯段的接触荷载进行准确估计具有重要的工程意义。对上弯段接触荷载进行理论研究,推导了简化的计算公式,并采用数值仿真技术研究了铺设工况下影响接触荷载大小的关键参数,以指导柔性管道铺设的上弯段接触荷载的分析,并为铺设设计提供参考。

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	叶海宾
	岳剑锋
	叶永彪
	岳前进
	陈金龙

关键词 ：柔性管道, 水平式铺设, 上弯段挤压, 接触荷载

Abstract：

The over-bend of the flexible pipe will be subjected to obvious contact load during horizontal laying and failure may occur because of crushing. This usually restricts the application of horizontal laying in deep water. Therefore, it is significant to accurately estimate the contact load on the over-bend of the flexible pipe during laying. We carry out theoretical research on the over-bend contact load, deduce a simplified calculation formula, and investigate the key parameters which affect the contact load in the laying cases by numerical simulation. The results can offer a specific guidance for the over-bend contact load analysis in flexible pipe laying, and provide a reference for the laying design as well.

Key words： flexible pipe horizontal laying over-bend crushing contact load

收稿日期: 2015-02-03 出版日期: 2016-01-21

TE53

基金资助:国家863计划重点项目(201AA09A212)、国家自然科学基金创新群体项目(50921001)

作者简介:

作者简介:叶海宾(1985-),男,硕士,工程师,主要从事海洋工程方面的研究。

引用本文:

叶海宾, 岳剑锋, 叶永彪, 岳前进, 陈金龙. 柔性管道铺设上弯段接触荷载的参数分析[J]. 海洋工程装备与技术, 2015, 2(3): 184-188.
Hai-bin YE, Jian-feng YUE, Yong-biao YE, Qian-jin YUE, Jin-long CHEN. Parameter Research on the Contact Load of the Over-Bend of Flexible Pipe During Laying. Ocean Engineering Equipment and Technology, 2015, 2(3): 184-188.

链接本文:

https://www.qk.sjtu.edu.cn/oeet/CN/ 或 https://www.qk.sjtu.edu.cn/oeet/CN/Y2015/V2/I3/184

Fig.1 下水桥上管道微元受力图

Fig.2 上弯段接触变形与升离点示意图

Fig.3 OrcaFlex中的铺管模型

Table 1 模型主要参数

Table 2 铺设张力与接触力

Fig.4 铺设水深对接触力的影响

Table 3 不同下水桥半径下的最大接触力

Fig.5 不同下水桥半径对接触力的影响

Table 4 不同弯曲刚度下的最大接触力

Fig.1 弯曲刚度对接触力的影响

Table 5 不同接触刚度下的最大接触力

Fig.7 接触刚度对接触力的影响

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