Principal Component and Multiple Regression Analysis for Steel Fiber Reinforced Concrete (SFRC) Beams

International Journal of Concrete Structures and Materials

Table 5 Statistical analysis of shear strength prediction models for low strength SFRC beams with a/d < 2.5 and plain and crimped fibers (LS-DB-PC).

Study	V_EXP/V_ANA				AAE	λ ²	R ²	Rating^b (1–7)
Study	Mean	SD	COV (%)	Confidence^a	AAE	λ ²	R ²	Rating^b (1–7)
Imam et al. (1994)	0.63	0.29	46.18	0.18	121.6	65.4	0.82	7
Khuntia et al. (1999)	1.43	0.30	20.79	0.18	26.9	9.8	0.96	2
Kwak et al. (2002)	0.74	0.18	24.47	0.11	42.5	9.8	0.89	3
Li et al. (1992)	0.85	0.24	28.19	0.15	33.4	4.1	0.88	4
Narayanan and Darwish (1988)	0.83	0.26	30.87	0.16	40.1	15.1	0.86	5
Sharma (1986)	1.51	0.66	43.36	0.41	36.9	21.8	0.79	6
Proposed Model	1.00	0.07	7.02	0.04	5.1	0.2	0.99	1