Research on Bearing Performance of Multi-Bundle Parallel CFRP Cable Anchorage System

WANG Zi-hao; LI Cheng-gao; XIAN Gui-jun; XIONG Hao; BAI Jie; XU Guo-wen

doi:10.13204/j.gyjzG22022314

Volume 52 Issue 9

Sep. 2022

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Article Navigation > INDUSTRIAL CONSTRUCTION > 2022 > 52(9): 18-27

WANG Zi-hao, LI Cheng-gao, XIAN Gui-jun, XIONG Hao, BAI Jie, XU Guo-wen. Research on Bearing Performance of Multi-Bundle Parallel CFRP Cable Anchorage System[J]. INDUSTRIAL CONSTRUCTION, 2022, 52(9): 18-27. doi: 10.13204/j.gyjzG22022314

Citation:

WANG Zi-hao, LI Cheng-gao, XIAN Gui-jun, XIONG Hao, BAI Jie, XU Guo-wen. Research on Bearing Performance of Multi-Bundle Parallel CFRP Cable Anchorage System[J]. INDUSTRIAL CONSTRUCTION, 2022, 52(9): 18-27. doi: 10.13204/j.gyjzG22022314

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Research on Bearing Performance of Multi-Bundle Parallel CFRP Cable Anchorage System

doi: 10.13204/j.gyjzG22022314

WANG Zi-hao^1,2,
LI Cheng-gao^1,2,
XIAN Gui-jun^1,2,
XIONG Hao^3,4,
BAI Jie^3,4,
XU Guo-wen^{3,4
,
,}

1. Key Lab of Structures Dynamic Behavior and Control, Harbin Institute of Technology, Ministry of Education, Harbin 150090, China;
2. School of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China;
3. China Construction Eighth Engineering Division Co., Ltd., Shanghai 200122, China;
4. Research Center of Shanghai Carbon Fiber Composite Application Technology in Civil Engineering, Shanghai 200122, China

Received Date: 2022-02-23
Available Online: 2023-02-06

Abstract

Abstract

Compared with the steel wires, carbon fiber reinforced polymer (CFRP) composite has the excellent properties, such as light weight, high strength, superior corrosion, fatigue and creep resistance. When CFRP are used in civil engineering structures, the weight of the structures can be reduced and life can be prolonged. Unidirectional CFRP has the typical orthotropic characteristics with poor shear and transverse compressive properties, which makes the anchorage of CFRP to become a difficult problem. In this paper, the experiment and finite element simulation were used to study the bearing performance and stress distribution of multi-bundle parallel carbon fiber cables anchorage system. The results showed that when the multi-cone anchors were used to anchor multi-bundle parallel carbon fiber cables, the stress concentration caused by the anchors would destory the surface of the CFRP bars at the load end, resulting in a decrease of bearing capacity of the CFRP cables. A finite element simulation method was proposed with the interface behavior of CFRP bars and epoxy resin characterized by bond-slip constitutive. The failure modes and stress distribution of anchorage system of CFRP cable were studied, the damage mechanism of carbon fiber cable caused by the anchor extrusion was revealed, and the ultimate bearing capacity of anchorage of CFRP cables was predicted. Finally, through optimizing the anchorage system, it was found that increaseing anchoring length for carbon fiber cable could improve the anchoring efficiency of the anchoring system from 70% to 90%.
- CFRP cable,
- anchor system,
- anchoring mechanism,
- failure mode,
- finite element analysis

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References(33)

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