In addition to the design of bridge body stability and welding integrity, there are many points worth noting in the design of bridge steel structures.
Most of the current structural internal force calculations are based on single cantilever for side holes and simply supported hanging beams for middle holes. In this calculation, the bridge is divided into several units, each unit section is numbered, and corresponding information, such as unit feature information, is input.
In addition, prestress, shrinkage creep and live load calculation are all important contents of the calculation. When the main road of the bridge is too wide, it is necessary to optimize the design of the wide box girder of the steel structure of the lane, such as taking vertical stiffeners and other related measures at the supports.
q235b low carbon steel plate/carbon steel plate is mainly used for welding structures such as buildings and bridge projects with high quality requirements.
GB/T700 GB/T3274 Q235B mild steel plates/carbon steel plates chemical composition
Grade |
C % |
Si % |
Mn % |
P % |
S % |
|
Q235B |
0.22 |
0.35 |
1.4 |
0.045 |
0.045 |
GB/T700 GB/T3274 Q235B mild steel plates/carbon steel plates mechanical properties
Grade |
Thickness(mm) |
Yield Strength (Mpa) |
Tensile Strength |
Elongation(%) |
Min Impact Energy |
|
(MPa) |
|
Q235B |
≤ 16 |
235 |
370-500 |
26 |
20 |
27J |
|
16-40 |
225 |
370-500 |
25 |
20 |
27J |
|
>40 |
215 |
370-500 |
24 |
20 |
27J |
Q235B mild steel plate has certain elongation, strength, toughness and casting properties, and is easy to be pressure welded.
