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Table 1 Example properties.

From: Comparison of Totally Prefabricated Bridge Substructure Designed According to Korea Highway Bridge Design (KHBD) and AASHTO-LRFD

Item

KHBD

AASHTO-LRFD

Diameter of cross section (mm)

2,200

2,100

Column height (mm)

14,000

Strength of materials

 Concrete (MPa)

40 (Footing 27)

  Reinforcement (MPa)

SD40 (400)

  Shear connection (MPa)

STK400 (235)

Tendon (MPa)

  

 Column

7@seven-wire strands 15.2 mm (1860)/14EA

7@seven-wire strands 15.2 mm (1860)/8EA

 Pier Cap

7@seven-wire strands 15.2 mm (1860)/7EA

Prestressing force (MPa)

929.0 (Column)

883.7 (Column)

874.0 (Pier Cap)

832.9 (Pier Cap)

Column

 Diameter of reinforcement

D16 (Longitudinal)

D22, D29 (Transverse)

Pier Cap

 Diameter of reinforcement

D13, D16 (Horizontal)

D19 (Vertical)

Footing

 Diameter of reinforcement

D25, D19

Cover thickness (mm)

100

Axial force

0.1 f ck A g