Examination of Strength Modeling Reliability of Physical Tests on Structural Concrete Columns

Table 5

Summary of strength ratio statistics for usual reinforced concrete and composite columns (3<𝑙/ℎ<30 and 0<𝑒/ℎ<∞).

Column type	ℓ/ℎ	𝑒/ℎ	𝜌^′′ (%)	𝑛	Strength ratio statisticsa
					FEM	CSA
Reinforced concreteb	3.0–30.0	0.03–1.25	0.1–2.9	165	1.00 (0.13)	1.05 (0.14)
Compositec	3.8–28.9	0.03–1.06	0.0–2.9	67	0.98 (0.13)	1.09 (0.19)
Combined	3.0–30.0	0.03–1.25	0.0–2.9	232	0.99 (0.13)	1.06 (0.16)

aThe statistics shown are the average values (and coefficients of variation in parentheses) of the ratios of tested to computed strengths. The computed strengths are those from FEM and CSA.
bThe computed reinforced concrete column minimum (maximum) strength ratios are 0.63 (1.36) for FEM and 0.63 (1.70) for CSA, and 𝜌_rs = 1.0%–6.9%.
cThe computed composite column minimum (maximum) strength ratios are 0.71 (1.28) for FEM and 0.78 (1.87) for CSA, 𝜌_ss = 2.7%–14.5%, and 𝜌_rs = 0.0%–3.1%.