Steel structure overpass is a type of overpass mainly constructed with steel as the structural material. It is usually used to connect different parts of buildings, such as shopping malls, stations, schools, office buildings, etc., as well as to cross obstacles such as roads, railways, or rivers.
1、 Definition
Steel structure pedestrian bridge refers to a bridge structure mainly composed of steel, including the main beam, crossbeam, support structure, connectors, etc. of the bridge. Steel is widely used in the construction of overpasses due to its high strength, corrosion resistance, and plasticity.
2、 Type
Steel structure overpasses can be classified into the following types based on their functional use, structural form, and design style:
1. Ordinary pedestrian overpass: mainly used for pedestrian passage, crossing roads or railways, etc.
2. Bicycle overpass: a bridge specifically designed for cyclists and motorcycle riders.
3. Public transportation overpass: connecting the subway station to the ground level, used for public transportation such as subways, buses, etc.
4. Commercial pedestrian bridge: a bridge located in a commercial area that connects shopping malls or commercial buildings.
3、 Advantages
1. High strength: Steel has high strength and stiffness, and can withstand large loads.
2. Good durability: After appropriate anti-corrosion treatment, steel structure overpasses can resist the impact of harsh weather and environment for a long time.
3. Convenient construction: Steel components can be prefabricated in the factory and assembled on site, with fast construction speed and high efficiency.
4. Plasticity: Steel can be processed into various shapes and sizes, making it easy to design unique appearances and structures.
5. Flexibility: Steel structure overpasses can be designed according to different terrains and requirements to adapt to different usage environments.
4、 Design points
1. Structural design: Design reasonable beams, columns, and supporting structures based on the length, width, and load requirements of the pedestrian bridge.
2. Anti corrosion measures: Adopt measures such as painting, galvanizing, or using corrosion-resistant materials to protect the steel structure from corrosion.
3. Decorative design: Combining architectural aesthetics, design a beautiful appearance, including railings, handrails, etc. of bridges.
4. Safety: Ensure the load-bearing capacity and stability of the bridge, and meet relevant safety standards and regulations.
5、 Application
Steel structure overpasses are widely used in various public facilities and transportation hubs, such as:
Business district: connecting shopping malls, shopping centers, and underground parking lots.
Transportation hub: connecting subway stations, train stations, and bus stations.
School and office buildings: connecting different buildings or floors.
Public park: crossing rivers, valleys, or roads.
Steel structure overpasses have become an indispensable part of modern urban planning and construction due to their high structural strength, good durability, and convenient construction. With the continuous advancement of design concepts and construction techniques, steel structure overpasses will play a greater role in the future.
