Probabilistic Prediction of Maximum Tensile Loads in Soil Nails

Table 1

Summary of wall geometry, soil properties, and nail arrangement for soil nail walls reported in the source documents.

Data group	Wall	Source	Soil	Wall geometry			Surcharge	Soil strength parameters			Nail spacing		No. of data
				H (m)	α (°)	β (°)	(kPa)	ϕ (°)	c (kPa)	(kN/m^3)	(m)	(m)
1	W1	[22]	Medium dense, poorly graded sand	5.3	0	0	55	33	4.8	18.0	1.4	1.0	5
	W2	[22]	Silty sand, clayey silt	5.6	0	27	0	33	4.8	18.0	1.4	1.0	5
	W3	[23]	Heterogeneous SM	9.2	0	0	0	36.5	18.5	16.3	1.85	1.85	3
	W4	[2]	Residual soil and weathered rock	9−12	16	25	0	38	7.2	18.9	1.5	1.5	7
	W5	[24]	Fill, silt, sand	7.6	0	0	0	38	0	19.6	1.83	1.22−1.83	4
	W6	[24]	Fill, silt, sand	5.9	0	0	0	38	0	19.6	1.83	1.22−1.52	3
	W7	[24]	Fill, silt, sand	5.9	0	0	0	38	0	19.6	1.83	1.22−1.52	3
	W8	[25]	Gravelly silty sand	4-5	0	0	0−127	35	0	19.6	1.0	1.05	3
	W9	[25]	Gravelly silty sand	4-5	0	0	0−127	35	0	19.6	1.0	1.05	12
	W10	[26]	Silty clay	9.2	8.5	0	0	10	0	19.6	1.5	1.5	4
	W11	[27]	Silty sand, fine sand	10	0	0	35	30.6	0	19.1	1	1−1.2	3
	W12	[28]	Clay, silty clay	12	0	0	15	16−20	16−18	19	1.5	1.5	4
	W13	[29]	Silty clay	8	0	0	0	16.4	12	19.7	1.2	1.2	6
	W14	[30]	Sand	6	11.3	0	0	35	0	21	1.5	1.5	4
	W15	[31]	Silty clay	8.5	11.3	0	0	18.9	21	19.8	1.5	1.5	5
	W16	[31]	Silty clay	8.5	15.8	0	0	18.9	21	19.8	1.5	1.5	3
2	W17	[32]	Sand	6	12	0	16	33	0	16	1.25	1.46	4
	W18	[33]	Clayey or silty gravel	5.8−10.6	30	0	0	27	3	18	1.7, 1.8	1.2, 2.1	7
	W19	[34]	Residual andesite	10	0	0	0	38	0	19	2.0	1.5	1