Optimization Analysis of Settlement Parameters for Postgrouting Piles in Loess Area of Shaanxi, China

Table 1

Physical properties of the soil layers.

Name and layer number	Depth, (m)	Density ()	Moisture content, (%)	Void ratio,	Coefficient of compressibility, (MPa^−1)	Cohesion, (kPa)	Internal friction angle, (°)	Unconfined compressive strength ()
1. Loessial soil,	0∼1.8	1.68	16.3	0.883	0.35	6.8	28.4	1.64
2. Old loess,	1.8∼>50	1.85	7.9	0.586	0.12	30.5	25.8	14.5