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Table 2 Design variables and their uncertainty parameters

From: Damage characterization and resilience optimization of reinforced concrete bridge piers under vehicle impact

No

Variables

Distribution

Mean

CoV

St. Dev

Units

1

Diameter of pier (d)

Normal

21.06 (0.53)

-

0.25 (0.006)

inches (m)

2

Height of pier (h)

Normal

102.06 (2.60)

-

0.25 (0.006)

inches (m)

3

Vehicle weight (m)

Normal

Varying

0.235

-

lbs (kN)

4

Vehicle velocity (v)

Lognormal

Varying

0.165

-

ft/s (m/s)

5

Core diameter (dc)

Normal

18.06 (0.46)

 

0.25 (0.006)

inches (m)

6

Yield strength of transverse Reinforcement (σyt)

Lognormal

45,300 (312.33)

0.116

5254.8 (36.23)

psi (MPa)

7

Compressive strength of concrete (f’c)

Normal

Varying

0.18

-

psi (MPa)

8

Diameter of longitudinal reinforcement (dl)

Normal

0.855 (0.021)

-

0.365 (0.009)

inches (m)

9

Yield strength of longitudinal reinforcement (σy)

Lognormal

67,500 (465.40)

0.098

6615 (45.61)

psi (MPa)

10

Diameter of transverse reinforcement (dt)

Normal

0.48 (0.01)

-

0.365 (0.009)

inches (m)

11

Stiffness (k)

Normal

1,713,045 (300.00)

0.2

342,609 (60.00)

lb/in (kN/m)

12

Pitch (s)

Deterministic

2.5 (0.06)

-

-

inches (m)