Load Transfer Law of Anti-Floating Anchor With GFRP Bars Based on Fiber Bragg Grating Sensing Technology

Yamei Zhang; Xiaoyu Bai; Xiaoyu Bai; Nan Yan; Nan Yan; Songkui Sang; Desheng Jing; Xiaoyu Chen; Mingyi Zhang; Mingyi Zhang

doi:10.3389/fmats.2022.849114

Frontiers in Materials (Mar 2022)

Load Transfer Law of Anti-Floating Anchor With GFRP Bars Based on Fiber Bragg Grating Sensing Technology

Yamei Zhang,
Xiaoyu Bai,
Xiaoyu Bai,
Nan Yan,
Nan Yan,
Songkui Sang,
Desheng Jing,
Xiaoyu Chen,
Mingyi Zhang,
Mingyi Zhang

Affiliations

Yamei Zhang: School of Civil Engineering, Qingdao University of Technology, Qingdao, China
Xiaoyu Bai: School of Civil Engineering, Qingdao University of Technology, Qingdao, China
Xiaoyu Bai: Cooperative Innovation Center of Engineering Construction and Safety in Shandong Blue Economic Zone, Qingdao University of Technology, Qingdao, China
Nan Yan: School of Civil Engineering, Qingdao University of Technology, Qingdao, China
Nan Yan: Cooperative Innovation Center of Engineering Construction and Safety in Shandong Blue Economic Zone, Qingdao University of Technology, Qingdao, China
Songkui Sang: School of Civil Engineering, Qingdao University of Technology, Qingdao, China
Desheng Jing: School of Civil Engineering, Qingdao University of Technology, Qingdao, China
Xiaoyu Chen: Department of Civil and Environmental Engineering, Hong Kong Polytechnic University, Hong Kong, China
Mingyi Zhang: School of Civil Engineering, Qingdao University of Technology, Qingdao, China
Mingyi Zhang: Cooperative Innovation Center of Engineering Construction and Safety in Shandong Blue Economic Zone, Qingdao University of Technology, Qingdao, China

DOI: https://doi.org/10.3389/fmats.2022.849114
Journal volume & issue: Vol. 9

Abstract

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The glass fiber-reinforced polymer (GFRP) anchor, a new type of composite material anchor, has been widely used in foundation engineering of coastal areas. This study investigated the feasibility of applying the fiber Bragg grating (FBG) sensing technology to monitor the strain of the GFRP anchor during the pull test. Based on an advanced method, the FBG strain sensors were installed in GFRP anchors during the anchor manufacturing process. Then, GFRP anchors were installed into the pre-created borehole with an M30 cement mortar. Meanwhile, the FBG temperature sensors were installed next to the GFRP anchors to monitor the temperature change during the test. The axial force and average shear stress of GFRP anchors along depth during the pull test were analyzed, and the influence of temperature change on strain measurement was studied. The test results showed that the FBG sensing technology and the installation method of FBG strain sensors used in the test were feasible to monitor the mechanical properties of the GFRP anchor during the pull test. Moreover, the effect of temperature change on strain monitoring of FBG strain sensors was negligible.

Published in Frontiers in Materials

ISSN: 2296-8016 (Online)
Publisher: Frontiers Media S.A.
Country of publisher: Switzerland
LCC subjects: Technology
Website: https://www.frontiersin.org/journals/materials

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