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[1]刘玉卿　武玉梁　张振永.中俄东线水平连续冷弯管管道沉管下沟的可行性[J].油气储运,2020,39(02):215-221.[doi:10.6047/j.issn.1000-8241.2020.02.013]
　LIU Yuqing,WU Yuliang,ZHANG Zhenyong.Feasibility of lowering-in of horizontal continuous cold bending pipes in China–Russia Eastern Gas Pipeline[J].Oil & Gas Storage and Transportation,2020,39(02):215-221.[doi:10.6047/j.issn.1000-8241.2020.02.013]
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中俄东线水平连续冷弯管管道沉管下沟的可行性

《油气储运》[ISSN:1000-8241/CN:13-1093/TE] 卷: 39 期数: 2020年02期 页码: 215-221 栏目: 设计与施工 出版日期: 2020-02-25
Title:
Feasibility of lowering-in of horizontal continuous cold bending pipes in China–Russia Eastern Gas Pipeline
文章编号:
1000-8241（2020）02-0215-07
作者:
刘玉卿　武玉梁　张振永
中国石油天然气管道工程有限公司
Author(s):
LIU Yuqing;  WU Yuliang;  ZHANG Zhenyong
China Petroleum Pipeline Engineering Corporation
关键词:
中俄东线; 连续冷弯管; 沉管下沟; 有限元; 可行性
Keywords:
China–Russia Eastern Gas Pipeline;  continuous cold bending pipe;  pipe lowering-in;  finite element;  feasibility
分类号:
TE832 　　　　
DOI:
10.6047/j.issn.1000-8241.2020.02.013
文献标志码:
A　　　 　
摘要:
为了保证全自动焊机的通过性，实现全自动连续焊接作业，采用连续冷弯管替代热煨弯管以达到等效转向效果，将直管道和冷弯管在沟上焊接完成后进行整体沉管下沟作业。管道在沉管下沟过程中会经历高应力状态，尤其对于带有水平连续冷弯管的管道，整体沉管下沟过程中的应力状态更加复杂，尚无施工先例。采用有限元方法分析了带水平连续冷弯管管道双侧单向沉管下沟的基本规律，分析了水平连续冷弯管管道沉管下沟后残余应力存在的原因、分布情况及影响因素，提出了水平连续冷弯管管道沉管下沟的可行性评判标准，并将其应用于中俄东线天然气管道进行论证。研究结果表明：中俄东线1 422 mm×21.4 mm、1 422 mm×25.7 mm、1 422 mm×30.8 mm 管道规格的水平连续冷弯管管道整体沉管下沟的施工方案可行。（图11，表1，参20）
Abstract:
In order to ensure the pass-through of the full-automatic welding machine and realize the full-automatic continuous welding operation, the continuous cold bending pipe was adopted to replace the hot bending pipe to achieve an equivalent turning result. The straight pipe and the cold bending pipe were welded above the trench, and the integral pipe lowering-in was carried out after the welding was completed. The pipeline will be subjected to high stress during pipe lowering-in process. Especially for the pipeline with horizontal continuous cold bending pipes, the stress state in the whole pipe lowering-in process is complicated, and there is no such construction precedent. The finite element analysis was used to analyze the basic law of the double-sided unidirectional lowering-in of the pipeline with horizontal continuous cold bending pipe. The causes, distribution and influencing factors of residual stress after pipe lowering-in of the horizontal continuous cold bending pipe were analyzed. The feasibility evaluation criteria for lowering-in of the horizontal continuous cold bending pipe was proposed and demonstrated. The research results show that the construction plan of the integral pipe lowering-in of the horizontal continuous cold bending pipe with 3 specifications (1 422 mm×21.4 mm, 1 422 mm×25.7 mm and 1 422 mm×30.8 mm) in China–Russia Eastern Gas Pipeline is feasible. (11 Figures, 1 Table, 20 References)

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备注/Memo

（收稿日期：2018-08-22；修回日期：2019-12-26；编辑：杜娟） 作者简介：刘玉卿，男，1986 年生，工程师，2012 年硕士毕业于 天津大学船舶与海洋工程专业，现主要从事油气长输管道工程设 计、管道应力分析、管道可靠性分析评价工作。地址：河北省廊坊市 和平路146 号，065000。电话：0316-2074544。Email：liu_yuqing@ cnpc.com.cn

更新日期/Last Update: 2020-02-25