Deformation Characteristics of a Deep Subway Foundation Pit in Hard Rock Strata under a Delayed Supporting Condition

Table 2

Physical and mechanical parameters of drilled grouting piles and transverse reinforced concrete bracings.

Supporting types	Density; (kg/m^3)	Elastic modulus; (GPa)	Cohesion; (MPa)	Internal friction angle; (°)	Tensile strength; (MPa)	Poisson’s ratio
Drilled grouting piles	2500	31.5	20	18	3	0.25
Reinforced concrete bracings	2500	31.5	20	18	3	0.25