Numerical Simulation and Experimental Study of Carbon Fiber-Reinforced Polymer Single-Bar Extrusion Anchorage Structure
Wanxu Zhu, Chengyang Xiong, Boxuan Cheng, Quanxi Shen, Hongbin Cheng, Shangqi Guo
TL;DR
This study introduces a new anchoring structure for carbon fiber-reinforced polymer tendons that improves efficiency and reduces size.
Contribution
A novel CFRP single-bar extrusion anchorage structure with sequential compression is proposed to enhance anchoring efficiency.
Findings
The highest anchoring efficiency of 61.04% is achieved with specific extrusion sleeve parameters.
Connecting four 15 mm extrusion sleeves in series improves efficiency by 24.98% compared to a single 60 mm sleeve.
Abstract
The reliable anchorage of carbon fiber-reinforced polymer (CFRP) tendons is a critical issue influencing the stable bearing capacity of bridge cables. This study introduces a novel CFRP single-strand extrusion anchoring structure, where the strand is compressed at its end. By integrating this with internal cone filler wrapping, we create a CFRP multi-strand cable composite anchoring system. This innovative design not only minimizes the overall dimensions of the anchoring system but also significantly improves its anchoring efficiency coefficient. An axisymmetric model was developed using ANSYS finite element software. The radial stress distribution and anchorage efficiency coefficient in the anchorage zone of Φ7 CFRP bar and Φ13.6 extrusion die were analyzed with varying parameters, such as chamfering, outer diameter, and length of the extrusion sleeve, and were validated through static…
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Taxonomy
TopicsStructural Behavior of Reinforced Concrete · Mechanical stress and fatigue analysis · Structural Load-Bearing Analysis