Effects of the Tip Location on Single Piles Subjected to Surcharge and Axial Loads

Table 4

Variations of the dragload reduction and base stress increment with the axial load.

Tip location (Y)	𝑃/𝑃max
	0.25	0.50	0.75	1.00	1.25	1.50	1.75	2.00	2.25	2.50	2.75	3.00	3.25	3.50	3.75	4.00	4.25	4.50	4.75	5.00
R (%)
𝑌=1.00	16.2	30.8	45.0	57.1	68.7	79.4	89.2	100	100	100	100	100	100	100	100	100	100	100	100	100
𝑌=0.25	12.1	23.4	34.2	45.4	56.0	66.7	76.6	85.6	93.7	100	100	100	100	100	100	100	100	100	100	100
𝑌=0.00	11.7	22.5	31.0	36.9	44.7	52.1	59.3	66.3	73.4	80.2	86.8	92.9	98.9	100	100	100	100	100	100	100
𝑌=−1.00	8.8	16.8	24.2	31.0	37.3	43.2	48.8	54.3	59.9	65.3	70.8	76.0	81.2	86.1	90.7	95.2	99.7	100	100	100
I (%)
𝑌=1.00	2.8	5.5	8.0	10.8	12.6	14.9	18.3	21.2	23.9	37.2	56.6	85.5	125	217	310	357	403	449	494	525
𝑌=0.25	4.5	9.2	14.2	19.4	25.3	31.3	38.4	46.8	56.7	68.1	80.9	95.1	110	127	144	164	187	210	240	272
𝑌=1.00	10.6	22.5	32.6	40.4	50.3	60.3	70.2	80.3	90.6	100	111	122	134	145	157	170	184	201	221	242
𝑌=0.25	14.8	28.58	42.08	55.6	69.0	82.6	96.1	110	124	137	150	164	178	190	205	218	233	248	263	279