Study on the Design Method for the Deformation State Control of Pile-Anchor Structures in Deep Foundation Pits

Table 1

Physical and mechanical parameters of main stratum soil.

Soil layer	Thickness (m)	γ (kN/m^3)	c(kPa)	φ(°)	Es1-2(MPa)
Clay	8.6	19.0	38.4	19.1	6.5
Silty clay	1.6	19.1	21.7	20.0	5.8
Slightly medium-dense pebbles	4.8	22.0	—	31.0	17
Dense pebbles	13.5	23.6	—	40.0	40.0
Moderately weathered mudstones	—	24.7	300.0	33.0	—