Laboratory tests of measurement systems in pile shafts

IF 3.3 2区工程技术 Q2 ENGINEERING, GEOLOGICAL

Soils and Foundations Pub Date : 2025-07-25 DOI:10.1016/j.sandf.2025.101663

Adam Jabłonowski , Adam Krasiński , Piotr Kanty

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引用次数: 0

Abstract

The article describes the results of laboratory tests of reinforced concrete pile sections instrumented with several measurement systems. Compression tests were carried out on three 300-mm-by-1.2-m cylindrical pile elements, reinforced with an IPE140 steel profiles. The elements were equipped with vibrating wire sensors for measuring strains and stresses in concrete, and two elements had additional fibre optic cables installed for measuring strains. During the tests, external measurements were also made for axial force and longitudinal deformations of the elements. The aim of the research was to compare the measured values of all the internal and external systems and to evaluate the reliability of internal systems. The analysis of the measurement results showed generally good reliability of strain measurements using local vibrating wire sensors and extensometers and especially fibre optic sensors. Measurements of stresses in concrete using an internal vibrating wire sensor were unfortunately much less reliable. The reasons for the reduced reliability of the stress measurements are discussed and a correction coefficient is proposed. The conclusions state that the research and its results are valuable and useful for measuring and monitoring of foundation piles and columns purposes.

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桩井测量系统的实验室试验

本文介绍了用几种测量系统对钢筋混凝土桩截面进行室内测试的结果。压缩试验在三个300 mm × 1.2 m圆柱桩单元上进行，用IPE140钢型材加固。这些元件配备了振动线传感器，用于测量混凝土中的应变和应力，其中两个元件安装了额外的光纤电缆，用于测量应变。在试验过程中，还对构件的轴向力和纵向变形进行了外部测量。研究的目的是比较所有内部和外部系统的测量值，并评估内部系统的可靠性。对测量结果的分析表明，采用局部振动线传感器和伸缩仪，特别是光纤传感器进行应变测量，总体上具有较好的可靠性。不幸的是，使用内部振动线传感器测量混凝土应力的可靠性要低得多。讨论了应力测量可靠性降低的原因，并提出了修正系数。结论表明，本文的研究成果对桩基和桩柱的测量和监测具有一定的参考价值和实用价值。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Soils and Foundations 工程技术-地球科学综合

CiteScore

6.40

自引率

8.10%

发文量

审稿时长

5 months

期刊介绍： Soils and Foundations is one of the leading journals in the field of soil mechanics and geotechnical engineering. It is the official journal of the Japanese Geotechnical Society (JGS)., The journal publishes a variety of original research paper, technical reports, technical notes, as well as the state-of-the-art reports upon invitation by the Editor, in the fields of soil and rock mechanics, geotechnical engineering, and environmental geotechnics. Since the publication of Volume 1, No.1 issue in June 1960, Soils and Foundations will celebrate the 60th anniversary in the year of 2020. Soils and Foundations welcomes theoretical as well as practical work associated with the aforementioned field(s). Case studies that describe the original and interdisciplinary work applicable to geotechnical engineering are particularly encouraged. Discussions to each of the published articles are also welcomed in order to provide an avenue in which opinions of peers may be fed back or exchanged. In providing latest expertise on a specific topic, one issue out of six per year on average was allocated to include selected papers from the International Symposia which were held in Japan as well as overseas.