Table of contents for Bridges
This is the first in our bridge series although a bridge is not the first thing you think of when you talk about Steel Buildings it is one of the first things you think about when you talk about Steel Structures, and although most bridges are not made mostly of steel, they almost all use a significant amount of steel, either as cables or more commonly steel used in reinforcing concrete ,with out the Steel most large structures today could not be possible, so lets start the Bridge Series with the Bang Na Expressway
The Bang Na Expressway is a huge Conrete and Steel Bridge that streches 33.51 Miles to make it the longest Bridge in the world as of this posting.
The Bang Na Expressway is also known as the Burapha Withi Expressway this Bridge is located in Bankok , Thailand.
Althought we don’t have the exact amount of steel used on this job we do have some other info for you and pictures.
Structure Elements
Foundation of main line
Main Column
Portal Frame
D2/D3 and D6
FOUNDATION OF MAIN LINE
- SPUN PILE,
- Dia800 mm (31.5″)
- 120 mm wall thickness
- wo sections welded
- 16 piles per pier
- PILE CAP,
- 2.5 m(8.2″) thickness
- Below the flow line
MAIN COLUMN
H – Shape, slender light appearance
Average height of 16 m (52.5’)
Cast-in-place
PORTAL FRAME
- Toll plazas, merging areas of the ramps
- Portal Frame with D2/D3 and D6 segments
PORTAL ERECTION TRUSS
- Two components connected by a turntable
- Launching girder with two main spans long
- Erection girder with two portal spans long
