Progressive Collapse of RC Box Girder Bridges due to Seismic Actions

Table 1

Material properties of the numerical model.

Parameter	Pier 2	Pier 3	Pier 4	Box girder	R. Steel	Unit
Compressive strength	3.212e06	3.569 e06	4.375e06	3e06	3.6e07	kg/m^2
Tensile strength	3.212e05	3.569e05	4.375e05	3e05	3.6e07	kg/m^2
Strain at unconfined peak stress	0.002	0.002	0.002	0.002	—	m/m
Young’s modulus	2.55e09	2.55e09	2.55e09	2.55e09	2.0389e09	kg/m^2
Shear modulus	1.062e09	1.062e09	1.062e09	1.062e09	8.155e09	kg/m^2
Specific weight	2549.291	2549.291	2549.291	2549.291	7840	kg/m^3
Separation strain	0.1	0.1	0.1	0.1	0.2	—
Friction coefficient	0.8	0.8	0.8	0.8	0.8	—
Postyield stiffness ratio	—	—	—	—	0.01	—