Effect of Fiber Angles on Hybrid Double-Tube Concrete Columns under Monotonic Axial Compression

<div>Typical FRP rings after the split-disk test. (a) <i>θ</i> = ±80°; 60 mm in width. (b) <i>θ</i> = ±60°; 60 mm in width. (c) <i>θ</i> = ±45°; 60 mm in width.</div>

Advances in Civil Engineering

fig4

Figure 4

Figure 4: Effect of Fiber Angles on Hybrid Double-Tube Concrete Columns under Monotonic Axial Compression 