Steel structureSteel structure
A steel structure bridge is a form of bridge and refers to the superstructure of the bridge. The main bearing part is made of steel. Steel bridges are aerial passages that span rivers, lakes and marine obstacles.
Long-span bridges are mostly prestressed steel concrete bridges and steel structure bridges. The steel structure bridge structure consists of the main bridge along its longitudinal direction. The span between the piers is called the span, the section of the main bridge spanning the main navigation hole is called the main span, and the span is called the side span.
The main materials of the steel bridge are steel plate, section steel and high-strength steel. The steel plate is mainly made of low-alloy steel, and the parts are made of cast steel and high-quality carbon. Steel beams mainly include rib beams, box beams, truss beams and composite beams.
Advantages and disadvantages of steel structure bridges
Steel structure bridges have become an ideal material for large-span bridges due to their high material strength, good uniformity, easy processing, light components, and convenient transportation and erection.
The main disadvantages of steel structure bridges are corrosion under the action of the atmosphere, easy to rust, high maintenance costs, and high construction costs.
GB/T700 Q275 hot rolled plates have high strength, good plasticity and cutting properties, and have welding performance. If you have any needs and questions, please feel free to contact us.
GB/T700 Q275 hot rolled plates chemical composition:
Grade |
C |
Mn≥ |
Si |
P |
S |
|
GB/T700 Q275 |
0.28-0.38 |
0.50-0.80 |
0.35 |
0.050 |
0.045 |
GB/T700 Q275 hot rolled plates mechanical property:
Grade |
Tensile Strength(MPa) |
Yield Strength(MPa) |
% Elongation in 2 in.(50mm) min |
Impacting Test Temperature(°C) |
|
GB/T700 Q275 |
490-630 |
275 |
20 |
-20 |
Q275 steel plates are widely used in bridge engineering to make more important mechanical components, and can be used to replace high quality carbon steel sometimes.
