Mechanical Properties of High-Strength High-Performance Reinforced Concrete Shaft Lining Structures in Deep Freezing Wells

Table 4

Model parameters.

Model	a (mm)	b (mm)	λ	μ (%)	(MPa)
A-1	380.5	462.5	0.216	0.9	65.3
A-2	380.5	462.5	0.216	1.2	72.2
A-3	380.5	462.5	0.216	0.6	76.8
A-4	385	462.5	0.201	1.38	67.9
A-5	385	462.5	0.201	1.38	74.2
A-6	385	462.5	0.201	1.38	79.3
A-7	379.5	462.5	0.219	0.7	62.2
A-8	379.5	462.5	0.219	0.7	78.3

Note: a is the inner radius; b is the outer radius; λ is the thickness-diameter ratio, where λ = (b − a)/a; μ is the reinforcement ratio; and σ_cm is the average cube compressive strength.