Bridge Steel Structure as a structure type is extremely popular all over the world, and it can have an almost limitless number of variations due to a large number of structural forms possible, as well as different bridge spans, different purposes for a bridge, and so on.

Bridge Steel Structure is bridge in which structural steel is used for the main load-bearing structure. The girders are rigidly connected to the legs or pier (seat) bodies. Due to the consolidation of the piers and girders, the girders and piers are subjected to stresses. The piers not only bear the vertical pressure caused by the beam loads, but also the bending moment and horizontal thrust.

Structural forms of steel bridges:

According to the structural form, it can be divided into portal rigid bridge, inclined leg rigid bridge, T-shaped rigid bridge, continuous rigid bridge.

The main girder of the steel bridge generally needs to bear positive and negative bending moments, and the cross-section should be box-shaped. In the type section, the main girder of continuous steel bridge is subjected to the same force as the continuous girder, and the form and size of the section are the same as the continuous girder.

Advantages of steel structure bridge:

The tensile, compressive and shear strengths of steel are relatively high, and the steel members are small in cross-section and light in weight. The high strength makes it suitable for the construction of heavy-duty bridges; its light weight can reduce the foundation load and cost, and it is easy to be transported and lifted.

The excellent plasticity and toughness of steel make the steel bridge have good seismic performance.

Due to the good plasticity and toughness of steel, more energy can be absorbed through the deformation of the structure under the effect of earthquake. It also has the toughness that can be used repeatedly, thus significantly improving the seismic performance of steel structures. Seismic and wind resistance is the guarantee of bridge safety. The excellent seismic performance of steel structure bridges expands their scope of use, especially in high intensity earthquake areas.

Short construction period.

The steel structure material can be rolled into various profiles, simple and fast processing; the transportation of construction materials is small, and the construction site occupies a small area; the sporadic parts can be made on site, simple connection, easy installation, and short construction period.

The quality of steel bridge is easy to ensure.

Steel structure components are generally manufactured and processed in factories with high degree of industrialization and high precision.

Steel bridges are easy to be reinforced, heightened, widened and other modifications in the course of use. Changes are relatively easy and flexible.

Steel structure is an environmentally friendly product. Old parts removed from steel bridges can be re-melted, thus saving energy and complying with sustainable development policies.

Easy piping arrangement. The structural space of the steel bridge has more holes and cavities, which makes it easier to arrange the pipelines, and the replacement and maintenance of the pipelines are also more convenient.

Summarize

Steel structure is a green and low-carbon industry actively encouraged by countries all over the world, and it is also a pillar for the transformation of the construction industry. The application of steel structure in bridges has the advantages of high strength, light weight, flexibility, fast construction, easy maintenance, durability, sustainability and good seismic resistance. These advantages make steel structures an important choice for modern bridge projects, capable of meeting a variety of complex design requirements and providing a reliable transportation infrastructure.

Honglu Group, is a group mainly focusing on high quality steel structure manufacturing and prefabrication technology development. It serves more than 100,000 customers in 37 countries and regions, and is a leader in the field of steel structure manufacturing. They will strive to be the most trustworthy and competitive steel structure and steel structure supplier.