Experimental Study of Friction Resistance between Steel and Concrete in Prefabricated Composite Beam with High-Strength Frictional Bolt

Figure 18

Comparison of load-slip curves: (a) Group 1, (b) Group 2, (c) Group 3, (d) Group 4, (e) Group 5, (f) Group 6, and (g) Group 7.

(a)

(b)

(c)

(d)

(e)

(f)

(g)