浅海输气管道坠物碰撞动力响应分析

doi:10.16265/j.cnki.issn1003-3033.2018.06.018

中国安全科学学报 ›› 2018, Vol. 28 ›› Issue (6): 103-109.doi: 10.16265/j.cnki.issn1003-3033.2018.06.018

浅海输气管道坠物碰撞动力响应分析

骆吉庆^1,2, 姚安林^**1,3 教授, 何莎⁴ 高级工程师, 周雪⁵, 王小梅², 刘易思⁴

1 西南石油大学石油与天然气工程学院,四川成都 610500;
2 四川宏大安全技术服务有限公司,四川广汉 618300;
3 西南石油大学油气消防四川省重点实验室,四川成都 610500;
4 四川科特检测技术有限公司,四川广汉 618300;
5 中国石油工程建设有限公司西南分公司,四川成都 610041

收稿日期:2018-02-27 修回日期:2018-04-28 出版日期:2018-06-28 发布日期:2020-11-25
通讯作者: **姚安林(1959—),男,四川绵阳人,教授,主要从事油气管道系统风险评价与完整性管理方面的教学与科研。E-mail:yaoalt@sina.com。
作者简介:骆吉庆(1991—),女,四川广汉人,硕士,助理工程师,注册安全工程师,主要从事油气管道系统风险评价与完整性管理方面的研究。E-mail:luojiqing910@163.com。
基金资助:
国家科技支撑计划项目(2011BAK06B01)。

Dynamic response analysis of neritic gas pipeline impacted by dropped objects

LUO Jiqing^1,2, YAO Anlin^1,3, HE Sha⁴, ZHOU Xue⁵, WANG Xiaomei², LIU Yisi⁴

1 School of Petroleum & Nature Gas Engineering,Southwest Petroleum University,Chengdu Sichuan 610500,China;
2 Sichuan Hongda Safety Technology Service Co.,Ltd,Guanghan Sichuan 618300,China;
3 Oil and Gas Fire Protection Key Laboratory of Sichuan Province,Chengdu Sichuan 610500,China;
4 Sichuan Kete Detection Technology Co.,Ltd,Inc,Guanghan Sichuan 618300,China;
5 China Petroleum Engineering & Construction Corporation Southwest Company,Chengdu Sichuan 610041,China

Received:2018-02-27 Revised:2018-04-28 Online:2018-06-28 Published:2020-11-25

摘要/Abstract

摘要： 为深入研究浅海输气管道坠物碰撞损伤过程,从简化解析法和数值分析法2个角度对浅海输气管道坠物碰撞损伤过程进行动力响应分析。在简化解析法中,采用非完全弹性碰撞理论-动量守恒定律计算方法,计算坠物冲击荷载;依据布辛尼克斯法分析冲击荷载在土体中的传递,采用衰减系数分析冲击荷载在混凝土层中的传递,进而计算管道在坠物冲击荷载作用下的内力。在数值分析法中,用Workbench LS-DYNA有限元软件模拟浅海输气管道坠物碰撞的动力响应过程。结果表明:模拟得到的冲击荷载分布规律与布辛尼克斯法得到的相似,但衰减的速度更快;由于覆土层和混凝土防护层吸收了碰撞的大部分能量,冲击荷载对管道的影响范围有限。

关键词: 浅海输气管道, 坠物碰撞, 冲击荷载, WorkbenchLS-DYNA有限软件, 动力响应

Abstract: In order to carry out further research into the impact damage process of neritic gas pipelines caused by dropped objects,the dynamic response was analyzed by the simplified analytical method and numerical simulation method.The impact loads of dropped objects were calculated by non-perfect elastic collision theory and momentum conservation law.The transmission of impact load in soil was analyzed based on J.Boussinesq method,and the attenuation coefficient was used in analyzing the transmission in the concrete layer.Then the internal force was calculated.Workbench LS-DYNA software was used to simulate the dynamic response process of neritic gas pipeline impacted by dropped objects.The results show that the distribution of impact load obtained by simulation is similar to that obtained by J.Boussinesq method,but the speed of attenuation is faster,and that because the soil layer and concrete protective layer absorb most of the impact energy,the impact load on the pipeline is limited.

Key words: neritic gas pipelines, dropped objects impact, impact load, workbench LS-DYNA, dynamic response

中图分类号:

X944

骆吉庆, 姚安林, 何莎, 周雪, 王小梅, 刘易思. 浅海输气管道坠物碰撞动力响应分析[J]. 中国安全科学学报, 2018, 28(6): 103-109.

LUO Jiqing, YAO Anlin, HE Sha, ZHOU Xue, WANG Xiaomei, LIU Yisi. Dynamic response analysis of neritic gas pipeline impacted by dropped objects[J]. China Safety Science Journal, 2018, 28(6): 103-109.

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浅海输气管道坠物碰撞动力响应分析

Dynamic response analysis of neritic gas pipeline impacted by dropped objects

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