Experimental Study on the Transverse Effective Bending Rigidity of Segmental Lining Structures

Table 1

Mechanical and geometrical parameters of the model tunnel.

Parameters	Relation	Prototype	Model
Inner diameter (mm)	Cd = Cl = 20	2700	135
Thickness of the segmental lining (mm)	Ct = Cl = 20	300	15
Width of the segmental lining (mm)	= Cl = 20	1500	75
Elastic modulus of the segmental lining (GPa)	CE = 20	35.5	1.83
Compressive strength of the segmental lining (MPa)	CR = CE = 20	59.8	3.3
Total tensile stiffness of the reinforcement in the inner cambered surface of segments (kN)	CEA = CECl^2 = 8000	938700	140
Total tensile stiffness of the reinforcement in the outer cambered surface of segments (kN)	CEA = CECl^2 = 8000	551460	97