Design and application of a monitoring device for embedded foundation side friction resistance

IF 2 3区地球科学 Q3 GEOSCIENCES, MULTIDISCIPLINARY Frontiers in Earth Science Pub Date : 2024-06-14 DOI:10.3389/feart.2024.1381689

Wei Tian, Peishuai Chen, Jiacheng Li, Fuquan Ji

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Abstract

In geotechnical engineering, side friction resistance (SFR) is difficult to be measured directly. To further understand distribution law of the SFR, this paper developed a monitoring device that can directly measure the SFR. Further, a theoretical conversion formula for the elastic deformation and the SFR that considers the end effect of sensor sealing was proposed to guide the selection of sensor size and sealing material. Moreover, the monitoring device for the SFR was then calibrated using a large-scale direct shear apparatus and analyzed the stability of the sensor. The calibration results revealed that under cyclic loading and unloading conditions, the linear correlation coefficient of the sensor was greater than 0.996, and the sensitivity after sealing could reach 4.836 με/kPa, which met requirements of the engineering application. The developed monitoring device characterized by simple testing principle, low cost, and high precision were successfully applied to an open caisson project in Harbin City, which contributes to address the difficult problem of efficiently collecting the SFR in highways, bridges, water conservancy, and other projects.

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嵌入式地基侧摩阻力监测装置的设计与应用

在岩土工程中，侧摩阻力（SFR）难以直接测量。为进一步了解 SFR 的分布规律，本文开发了一种可直接测量 SFR 的监测装置。此外，考虑到传感器密封的终端效应，提出了弹性变形与 SFR 的理论换算公式，以指导传感器尺寸和密封材料的选择。此外，还利用大型直接剪切设备对 SFR 监测装置进行了校准，并分析了传感器的稳定性。标定结果表明，在循环加载和卸载条件下，传感器的线性相关系数大于 0.996，密封后的灵敏度可达 4.836 με/kPa，满足工程应用要求。所研制的监测装置具有测试原理简单、成本低、精度高等特点，成功应用于哈尔滨市某明挖沉箱工程，为解决公路、桥梁、水利等工程中有效采集 SFR 的难题做出了贡献。

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来源期刊

Frontiers in Earth Science Earth and Planetary Sciences-General Earth and Planetary Sciences

CiteScore

3.50

自引率

10.30%

发文量

2076

审稿时长

12 weeks

期刊介绍： Frontiers in Earth Science is an open-access journal that aims to bring together and publish on a single platform the best research dedicated to our planet. This platform hosts the rapidly growing and continuously expanding domains in Earth Science, involving the lithosphere (including the geosciences spectrum), the hydrosphere (including marine geosciences and hydrology, complementing the existing Frontiers journal on Marine Science) and the atmosphere (including meteorology and climatology). As such, Frontiers in Earth Science focuses on the countless processes operating within and among the major spheres constituting our planet. In turn, the understanding of these processes provides the theoretical background to better use the available resources and to face the major environmental challenges (including earthquakes, tsunamis, eruptions, floods, landslides, climate changes, extreme meteorological events): this is where interdependent processes meet, requiring a holistic view to better live on and with our planet. The journal welcomes outstanding contributions in any domain of Earth Science. The open-access model developed by Frontiers offers a fast, efficient, timely and dynamic alternative to traditional publication formats. The journal has 20 specialty sections at the first tier, each acting as an independent journal with a full editorial board. The traditional peer-review process is adapted to guarantee fairness and efficiency using a thorough paperless process, with real-time author-reviewer-editor interactions, collaborative reviewer mandates to maximize quality, and reviewer disclosure after article acceptance. While maintaining a rigorous peer-review, this system allows for a process whereby accepted articles are published online on average 90 days after submission. General Commentary articles as well as Book Reviews in Frontiers in Earth Science are only accepted upon invitation.