玄武岩纤维增强聚合物锚杆用于地下结构抗浮的可行性研究

doi:10.11896/cldb.20080081

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Abstract With the massive expansion of urban underground space development, foundation depth is increasing, underground anti-floating increasingly prominent.Anti-floating anchor rods are widely promoted because of their flexible layout, small stress on a single anchor, simple process and low cost. However, the traditional metal anti-floating anchors have poor corrosion resistance. Even with the use of casing pipes and anticorrosive measures, it is still impossible to avoid the influence of the stray current generated by the subway and other DC power supply systems on the corrosion of the steel anchors. Therefore, it is obviously difficult to guarantee the durability of using it as an underground permanent structure, so the anchor “time bomb” is said.
In recent years, fiber reinforced polymer (FRP) has attracted more and more attention. Due to its high tensile strength, good insulation, and strong corrosion resistance, it is considered the best substitute for steel. At present, glass fiber reinforced polymer (GFRP) has been applied to many anchoring projects, while carbon fiber reinforced polymer (CFRP) is limited in its application in geotechnical engineering due to its high cost. The emergence of basalt fiber reinforced polymer (BFRP) materials provides new ideas for anti-floating underground structures. BFRP anchors are regarded as a good substitute for steel anchors due to their high tensile strength, strong corrosion resistance, and good dielectric pro-perties.
This article first discusses the basic properties, mechanism and corrosion resistance of BFRP anchors, and then analyzes the reliability of BFRP anchors used in underground structure anti-floating engineering from indoor static anchoring, dynamic anchoring and field anchoring tests. Analyzing and demonstrating, and finally starting from economic benefits, according to the principle of equal strength, a comparative analysis of the cost performance of BFRP anchors is carried out, and new ideas are provided for the future development of BFRP anchors in the field of anti-floating engineering.

Key words： BFRP anchor anti-floating corrosion resistance bonding performance economic benefit

Published: 03 November 2021

CLC number:

TU473

Fund:Key Program of Natural Science Foundation of Shandong Province (ZR2020KE009), China Postdoctoral Science Foundation Project (2018M632641), Shandong Provincial Postdoctoral Innovation Project (201903043), Shandong Provincial Higher Education Science and Technology Plan (J16LG02), Postdoctoral Applied Research Grant Project of Qingdao (2018101).

About author:: Desheng Jing received his bachelor's degree in engineering from Suzhou University in 2018. He is currently a graduate student at Qingdao Technological University and is conducting research under the guidance of asso-ciate professor Xiaoyu Bai and professor Mingyi Zhang. His research has focused on the application of FRP materials in geotechnical engineering.
Xiaoyu Bai, born in Hohhot, Inner Mongolia in 1984, received his Ph.D. degree in civil engineering from Qingdao Technological University in July 2015. After graduating from his Ph.D., he stayed on as a teacher and is currently an associate professor and master tutor. His researches focus on the application of FRP materials in geotechnical engineering, foundation engineering and geotechnical anchoring. He is a reviewer of the National Natural Science Foundation of China, a member of the Editorial Committee of Engineering Investigation, Journal of Geotechnical Engineering, and Geotechnical Mechanics. In the past five years, he has hosted 10 research projects including the National Natural Science Foundation of China, the Shandong Provincial Key Research and Development Program, and the China Postdoctoral Science Foundation. At present, the main research directions are application of FRP materials in geotechnical enginee-ring, foundation engineering and geotechnical anchoring.

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Cite this article:

JING Desheng,BAI Xiaoyu,FENG Zhiwei, et al. Feasibility Study of BFRP Anchor Used in Anti-floating of Underground Structure[J]. Materials Reports, 2021, 35(19): 19223-19229.

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http://www.mater-rep.com/EN/10.11896/cldb.20080081 OR http://www.mater-rep.com/EN/Y2021/V35/I19/19223

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