Analysis of Deformation Characteristics of Filled Subgrade Treated by Micro-Pile

Table 2

Physical and mechanical parameters of the subgrade fill material.

Layer number	Soil layer	Layer thickness (m)	Unit weight (kN/m^3)	(−)	E (MPa)	Cohesion (kPa)	Friction angle (°)
1	Fill above rolling layer	0.5	21.8	0.17	5.1	45	28
2	Roadbed filling	2.5	16.1	0.23	3.1	16	19
3	Filling under the bed	1.5	19.8	0.29	3.4	17	19
4	Roadbed	1.3	20.3	0.23	4.4	17	19
5	Surface layer	0.8	22.8	0.19	12.9	48	35
6	Micro-pile	—	78.0	0.30	200000	—	—