Analytical Model for the End-Bearing Capacity of Tapered Piles Using Cavity Expansion Theory

Table 4

Data arrangement for prediction and validation of end-bearing capacity.

Source; paper	Soil; type	𝑆/𝐷	α = 0°			α = 0.53°			α = 0.7°			α = 0.71°			α = 1.13°			α = 1.4°
			𝑞𝑚 (kPa)	𝑞cal (kPa)	𝑞𝑚/𝑞cal	𝑞𝑚 (kPa)	𝑞cal (kPa)	𝑞𝑚/𝑞cal	𝑞𝑚 (kPa)	𝑞cal (kPa)	𝑞𝑚/𝑞cal	𝑞𝑚 (kPa)	𝑞cal (kPa)	𝑞𝑚/𝑞cal	𝑞𝑚 (kPa)	𝑞cal (kPa)	𝑞𝑚/𝑞cal	𝑞𝑚 (kPa)	𝑞cal (kPa)	𝑞𝑚/𝑞cal
Manandhar et al.(2010) [1]	K-7	0.1	828.56	1090.44	0.760				897.73	1138.77	0.788							990.76	1194.83	0.829
		0.2	862.79	1697.04	0.508	—	—	—	944.14	1772.23	0.533	—	—	—	—	—	—	1036.79	1859.50	0.558
		0.3	879.00	2083.71	0.422				970.21	2176.04	0.446							1069.29	2283.17	0.468
	TO	0.1	234.16	1504.66	0.156				473.78	1568.55	0.302							643.52	1642.46	0.392
		0.2	239.56	2341.86	0.102	—	—	—	527.81	2441.28	0.216	—	—	—	—	—	—	686.89	2556.34	0.267
		0.3	237.76	2875.67	0.083				551.23	2997.74	0.184							706.30	3139.01	0.226
Sakr et al.; [23–25]	*FS (LP)	0.1	2319.49	3105.68	0.747	2603.75	3744.82	0.695	—	—	—	3147.72	5173.84	0.608	3233.34	5539.99	0.584	—	—	—
	*FS (HP)	0.1	2885.87	1932.90	1.493	4630.36	3847.47	1.204	—	—	—	6315.58	6396.16	0.987	8748.14	7554.52	1.158	—	—	—
BCP (1B); (1971) [27]	Fine sand	0.1	1300	1695.39	0.767
		0.2	2000	2636.72	0.759
		0.5	3000	3954.57	0.759	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
		1	4000	4745.29	0.843
		2	5800	5272.43	1.100
BCP (5C); (1971) [27]	Dense sand	0.1	8000	5791.11	1.38
		0.2	12000	9007.84	1.332
		0.5	18000	13511.25	1.332	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
		1	22000	16213.3	1.357
		2	25000	18014.67	1.388
JGS; (1993) [28]	Sand; (356 kPa)	0.13	5200	5808.52	0.895	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
	Sand; (256 kPa)	0.3	5700	8691.14	0.656	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
	Sand; (212 kPa)	0.08	4200	3556.08	1.181	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
	Sand; (180 kPa)	0.1	2900	3895.01	0.745	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
Yasufuku et al. (2001) [8]	Quiou sand; (100 kPa)	0.1	1400	1537.20	0.911
		0.2	2200	2390.65	0.920	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
		0.5	3300	3585.46	0.920
		1.0	4200	4302.37	0.976
	Quiou sand; (200 kPa)	0.1	2700	2997.39	0.901
		0.2	3800	4662.05	0.815	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
		0.5	5700	6992.57	0.815
		1.0	7000	8390.89	0.834
	Quiou sand; (400 kPa)	0.1	3200	4188.25	0.764
		0.2	5100	6514.51	0.783	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—
		0.5	9300	9771.26	0.952
		1.0	12200	11725.31	1.041

Note: *FS: Fanshawe brick sand.