Under DevelopmentPlease cite this work as:Stefanidou, S., Paraskevopoulos, E., Papanikolaou, V., Kappos, A.J. "An online platform for bridge-specific fragility analysis of as-built and retrofitted bridges", Bulletin of Earthquake Engineering, 20, 1717-1737 (2022). https://doi.org/10.1007/s10518-021-01299-3

The Bridge Database - ESPA

Closed form relationships: Cylindrical Piers – Retrofitted with FRP jackets

Parameters	Values
D (m)	1.50	1.80	2.0
ρ_l	0.005	0.020
ρ_w	0.0075	0.012
f_c (MPa)	16	25	30
f_y (MPa)	220	400	500
E_FRP (MPa)	225000	75000
f_FRP (MPa)	4150	2450
t_FRP (m)	0.3	0.5	0.8
n_FRP	1	3	5
v	0.15	0.30
Combinations Number: 3888

Closed-form relationships M-phi

φ_y,FRPj/φ_y,core Calculation

	β₀	β₁	β₂	β₃	β₄
φ_y,FRPj/φ_y,core	-138	139	-0.00876	0.00431	0.0589

Please fill in the following parameters and press "Calculate".

φ_y,FRPj/φ_y,core :

φ_u,FRPj/φ_u,core Calculation

	β₀	β₁	β₂	β₃	β₄
φ_u,FRPj/φ_u,core	-25.2	25.6	-0.102	0.0157	0.699

Please fill in the following parameters and press "Calculate".

φ_u,FRPj/φ_u,core :

M_y,FRPj/M_y,core Calculation

	β₀	β₁	β₂	β₃	β₄
M_y,FRPj/M_y,core	-0.494	1.46	-0.00178	0.000802	0.031

Please fill in the following parameters and press "Calculate".

M_y,FRPj/M_y,core :

M_u,FRPj/M_u,core Calculation

	β₀	β₁	β₂	β₃	β₄
M_u,FRPj/M_u,core	-11.4	12.4	0.00188	0.000711	0.0034

Please fill in the following parameters and press "Calculate".

M_u,FRPj/M_u,core :

Closed-form relationships d/h

(d_1,FRPj/H)/(d_1,core/H) Calculation

	β₀	β₁	β₂	β₃	β₄
(d_1,FRPj/H)/(d_1,core/H)	-127	128	-0.00914	0.00406	0.0489

Please fill in the following parameters and press "Calculate".

(d_1,FRPj/H)/(d_1,core/H) :

(d_2,FRPj/H)/(d_2,core/H) Calculation

	β₀	β₁	β₂	β₃	β₄
(d_2,FRPj/H)/(d_2,core/H)	-7.61	8.58	0.00267	0.000449	0.0291

Please fill in the following parameters and press "Calculate".

(d_2,FRPj/H)/(d_2,core/H) :

(d_3,FRPj/H)/(d_3,core/H) Calculation

	β₀	β₁	β₂	β₃	β₄
(d_3,FRPj/H)/(d_3,core/H)	90.2	-89.6	-0.107	0.014	0.471

Please fill in the following parameters and press "Calculate".

(d_3,FRPj/H)/(d_3,core/H) :

(d_4,FRPj/H)/(d_4,core/H) Calculation

	β₀	β₁	β₂	β₃	β₄
(d_4,FRPj/H)/(d_4,core/H)	75.6	-74.9	-0.0761	0.0111	0.402

Please fill in the following parameters and press "Calculate".

(d_4,FRPj/H)/(d_4,core/H) :