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

International Journal of Concrete Structures and Materials

Table 4 Statistical analysis of shear strength prediction models for low strength SFRC beams with a/d < 2.5 and hooked fibers (LS-DB-H).

Study	V_EXP/V_ANA				AAE	λ ²	R ²	Rating^b (1–8)
Study	Mean	SD	COV (%)	Confidence^a	AAE	λ ²	R ²	Rating^b (1–8)
Ashour et al. (1992)	1.82	1.31	72.04	0.46	32.1	154.2	0.01	8
Imam et al. (1994)	0.55	0.35	64.79	0.12	169.7	168.5	0.04	5
Khuntia et al. (1999)	1.80	1.19	65.87	0.41	32.8	145.0	0.01	6
Kwak et al. (2002)	0.87	0.51	58.25	0.18	55.5	50.6	0.04	4
Li et al. (1992)	0.91	0.48	52.20	0.17	40.7	40.1	0.06	3
Narayanan and Darwish (1988)	1.02	0.51	50.07	0.18	35.2	39.2	0.10	2
Sharma (1986)	1.79	1.20	66.73	0.41	37.4	147.0	0.00	7
Proposed model	1.04	0.33	31.68	0.11	26.2	12.1	0.72	1