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水下穿越管道悬空段三级安全评价

杨涛 郭旭 成志强 帅祝名 胡聪

杨涛,郭旭,成志强,帅祝名,胡聪. 水下穿越管道悬空段三级安全评价 [J]. 应用数学和力学,2023,44(2):220-228 doi: 10.21656/1000-0887.430294
引用本文: 杨涛,郭旭,成志强,帅祝名,胡聪. 水下穿越管道悬空段三级安全评价 [J]. 应用数学和力学,2023,44(2):220-228 doi: 10.21656/1000-0887.430294
YANG Tao, GUO Xu, CHENG Zhiqiang, SHUAI Zhuming, HU Cong. Three-Level Safety Evaluation of Suspended Sections of Underwater Buried Pipelines[J]. Applied Mathematics and Mechanics, 2023, 44(2): 220-228. doi: 10.21656/1000-0887.430294
Citation: YANG Tao, GUO Xu, CHENG Zhiqiang, SHUAI Zhuming, HU Cong. Three-Level Safety Evaluation of Suspended Sections of Underwater Buried Pipelines[J]. Applied Mathematics and Mechanics, 2023, 44(2): 220-228. doi: 10.21656/1000-0887.430294

水下穿越管道悬空段三级安全评价

doi: 10.21656/1000-0887.430294
基金项目: 山西省交通科学研究院集团创新发展项目(20-JKCF-48)
详细信息
    作者简介:

    杨涛(1996—),男,硕士生(E-mail:yangt0316@163.com

    成志强(1969—),男,教授,博士(通讯作者.  E-mail:zqcheng@netease.com

  • 中图分类号: TE973.4

Three-Level Safety Evaluation of Suspended Sections of Underwater Buried Pipelines

  • 摘要:

    水下穿越管道由于河床的不平整以及水流冲击、掏蚀作用,易产生裸露 、悬空等现象,悬空管段在水流作用下跨度逐渐增大,会威胁管道运营安全。为探究水流冲击作用下悬空管段的受力特性和失效行为,根据管道破坏形式,对管道进行静力学分析和动力学分析,提出了含悬空段穿越管道的分级安全评价方法:首先,根据管道悬空段受力特性和应力状态,进行“静载荷工况下的静强度安全评价”(1级);其次,根据悬空管道的固有振动频率与水流的涡旋发放频率的关系,进行“动载荷工况下的共振安全评价”(2级);最后,根据管道的环境工况和载荷作用,分析管道交变应力的周期性变化过程,求解管道的疲劳损伤和疲劳寿命,进行“动载荷工况下的疲劳强度安全评价”(3级),从而提出水下穿越管道悬空段的三级安全评价方法。同时,提出了不满足安全评价的稳管措施,结合算例给出具体求解计算流程,为水下穿越管道悬空段的安全评价提供了一定的理论参考。

  • 图  1  管道安全评价流程图

    Figure  1.  The pipeline safety evaluation flowchart

    图  2  管道悬空段所受载荷

    Figure  2.  Loads on the suspended section of the pipeline

    图  3  管道涡漩发放示意图

    Figure  3.  Schematic diagram of the pipeline vortex emission

    图  4  横向振动幅值$A^*_X$与折合速度$ {V_{\text{R}}} $关系曲线

    Figure  4.  The relation curve between transverse vibration amplitude $A^*_X$ and reduced velocity $ {V_{\text{R}}} $

    图  5  碳钢RQT501的S-N曲线

    Figure  5.  The S-N curve of carbon steel RQT501

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出版历程
  • 收稿日期:  2022-09-23
  • 修回日期:  2022-12-31
  • 网络出版日期:  2023-02-01
  • 刊出日期:  2023-02-15

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