Feasibility Study on the Use of Coaxial Strain-Sensing Cable to Monitor Strains on Buried HDPE Pipelines Crossing a Normal Fault

IF 5.9 2区 工程技术 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC
Tong Jiao;Shan Zhang;Jinyi Luo;Han Wang;Qiang Peng;Xing Zhu;Qiang Xu;Yue Hu;Xu Chen
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引用次数: 0

Abstract

Monitoring pipeline strain is essential for assessing structural integrity and guiding seismic design. Buried pipelines are prone to large localized strains under fault movement. Due to their limited measurement range, current strain-sensing techniques struggle to capture the entire evolution of pipeline strain during fault displacement. To address this, we propose a coaxial strain-sensing cable for buried pipelines (CSSC-BPs). This innovative cable transplants the fiber optic sensing mechanism onto a high ductility coaxial cable and is manufactured through specialized structural design and integrated packaging. We first detail the CSSC-BP’s working principle, structural design, manufacturing method, and installation process, followed by evaluating its sensing performance through tensile tests. Results indicate that the CSSC-BP can measure strains exceeding 16% with excellent repeatability within a 5% deformation range. Additionally, we conducted a model test involving a high-density polyethylene (HDPE) pipeline subjected to normal fault movement. The results confirm that the CSSC-BP can offer accurate and reliable large-strain measurements for buried pipelines under fault movement. It not only measures the strain response of the pipeline throughout the entire fault displacement process, but also captures bending strain softening and axial strain hardening behaviors during the large-strain deformation stage. The findings of this study will provide an effective tool for monitoring large strains in pipelines crossing faults.
同轴应变传感电缆监测穿越正断层埋地HDPE管道应变的可行性研究
管道应变监测是评估结构完整性和指导抗震设计的重要手段。埋地管道在断层运动下容易产生较大的局部应变。由于测量范围有限,目前的应变传感技术难以捕捉断层位移过程中管道应变的整个演变过程。为了解决这个问题,我们提出了一种用于埋地管道的同轴应变传感电缆(cssc - bp)。这种创新的电缆将光纤传感机制移植到高延展性同轴电缆上,并通过专门的结构设计和集成包装制造。本文首先详细介绍了CSSC-BP的工作原理、结构设计、制造方法和安装过程,然后通过拉伸试验对其传感性能进行了评价。结果表明,在5%的变形范围内,CSSC-BP可以测量超过16%的应变,具有良好的重复性。此外,我们还对高密度聚乙烯(HDPE)管道进行了正常断层运动的模型试验。结果表明,CSSC-BP可为断层运动下的埋地管线提供准确可靠的大应变测量。它不仅测量了管道在断层位移全过程中的应变响应,而且还捕获了大应变变形阶段的弯曲应变软化和轴向应变硬化行为。本研究结果将为跨断层管道的大应变监测提供有效工具。
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来源期刊
IEEE Transactions on Instrumentation and Measurement
IEEE Transactions on Instrumentation and Measurement 工程技术-工程:电子与电气
CiteScore
9.00
自引率
23.20%
发文量
1294
审稿时长
3.9 months
期刊介绍: Papers are sought that address innovative solutions to the development and use of electrical and electronic instruments and equipment to measure, monitor and/or record physical phenomena for the purpose of advancing measurement science, methods, functionality and applications. The scope of these papers may encompass: (1) theory, methodology, and practice of measurement; (2) design, development and evaluation of instrumentation and measurement systems and components used in generating, acquiring, conditioning and processing signals; (3) analysis, representation, display, and preservation of the information obtained from a set of measurements; and (4) scientific and technical support to establishment and maintenance of technical standards in the field of Instrumentation and Measurement.
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