Behavior of Concrete-Filled Steel Tube Columns Subjected to Axial Compression

Figure 17

Relationship of vertical displacement and load of three depths of rock-socketed columns. (a) Rock-socketed depth is 300 mm (P1: steel tube is 1 mm; P2: steel tube is 0 mm). (b) Rock-socketed depth is 400 mm. (c) Rock-socketed depth is 500 mm.

(a)

(b)

(c)