Analysis of Bearing Capacity and Seismic Performance of Circular RC Columns Strengthened with Externally Wrapped Steel Plates

Table 1

The material behavior parameters of concrete.

(t/mm^3)	Ec (MPa)		θ (°)	e	fb0/fc0	k	μ
2.4 × 10^−9	3.0 × 10^4	0.2	30	0.1	1.16	0.667	0.005

Note. represents the concrete density; is Poisson's ratio of concrete; θ is the expansion angle; e is the eccentricity ratio; f_b0 represents the strength of concrete under biaxial constant pressure; f_c0 is the uniaxial strength of concrete; k is the ratio of the second stress invariant on tension and compression meridian; μ is the coefficient of viscosity.