Deformation Response Research of the Existing Subway Tunnel Impacted by Adjacent Foundation Pit Excavation

Table 4

Parameters of beam elements.

Parameters	Top beam	Inner support	Lattice steel column	Concrete column
Elastic modulus (kN·m^−2)	3e7	3e7	2.06e8	3.15e7
Unit weight (kN·m^−3)	22.5	22.5	78.5	25
Dimension (m)	0.8 1.2	0.8 1.0	D = 0.6	D = 0.8