Predicting the Ultimate Bearing Capacity of Bolts with an Optimized Function Model

Table 1

Pullout test results from example 1.

No.	P (kN)	SA1 (mm)	SA2 (mm)
1	70	0.6	0.37
2	210	2.19	2.11
3	350	4.86	5.72
4	420	6.82	8.99
5	490	8.85	13.68
6	560	20.55	17.07
7	595	23.82	19.67
8	630	29.24	24.13
9	665	40.63	39.19