Analytical Calculation of Critical Anchoring Length of Steel Bar and GFRP Antifloating Anchors in Rock Foundation

Table 2

Calculating parameters and anchoring length of GFRP anchors.

Anchor test source	r0 (mm)	μs	Esa (GPa)	Es (MPa)	Test anchoring length (m)	Theoretical critical anchoring length (m)
[17]	14	0.33	51	32	5	5.871
[18]	14	0.33	45	32	6.45	5.514
[23]	14	0.33	51	30	3	6.063
[24]	16	0.25	43	3.05 × 10^3	0.65	0.624