Test on Hysteretic Behaviour of Prestressed Composite Joints with Concrete-Encased CFST Columns

Figure 14

Strains of longitudinal rebars and steel tube at the upper column end: (a) longitudinal rebars; (b) left side of the steel tube; (c) middle of the steel tube; (d) right side of the steel tube.

(a)

(b)

(c)

(d)