Bending Moment Calculations for Piles Based on the Finite Element Method

Table 11

Calculated bending moment in the pile (with C3D8).

Item		Grid number along the length	Grid number across pile section
			2		4		8
			Bending moment; (kN·m)	Error; (%)	Bending moment; (kN·m)	Error; (%)	Bending moment; (kN·m)	Error; (%)
𝑀𝑏	Computed with stress	15	2184.875	−53.58	2668.929	−43.30	2787.809	−40.77
		30	3172.975	−32.59	3831.406	−18.60	3992.286	−15.18
		60	3793.750	−19.40	4545.541	−3.43	4729.851	0.49
	Computed with displacement	15	1881.417	−52.58	1863.667	−53.02	1859.417	−53.13
		30	3248.333	−18.12	3179.000	−19.87	3163.000	−20.27
		60	4082.267	2.90	3933.733	−0.84	3895.867	−1.80
𝑀𝑚	Computed with stress	15	−816.513	−25.86	−1004.993	−8.75	−1051.735	−4.50
		30	−847.748	−23.02	−1041.848	−5.40	−1089.858	−1.04
		60	−858.825	−22.02	−1053.395	−4.35	−1102.111	0.07
	Computed with displacement	15	−1063.333	−7.27	−1060.000	−7.56	−1059.583	−7.59
		30	−1108.333	−3.34	−1105.000	−3.63	−1103.333	−3.78
		60	−1126.667	−1.74	−1126.667	−1.74	−1120.000	−2.33