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

Table 1

Design parameters of specimens.

Specimens	Axial compressive ratio n0	Vertical load (N/kN)	Prestressing level (λ)	(kN · mm)	(kN · mm)	/
S-1	0.29	1630	0.39	372	627	1.69
S-2	0.14	815	0.50	395	600	1.52
S-3	0.29	1630	0.50	395	627	1.59
S-4	0.29	1630	—	343	627	1.83