Nepal 55m Double Lane D Type Bailey Bridge

The GW D-type bridge originated in Germany, and was introduced into China and mass-produced through the analysis of its structure by Great Wall engineers.

The introduction of the D-type bridge stems from the technical barriers and deficiencies of the Bailey bridge. As we all know, Bailey bridge is a common prefabricated steel bridge structure. It is an upper and lower bearing bridge with a single pin connected truss unit as the main beam of the bridge span structure. It has simple structure, strong adaptability and good interchangeability. advantage. But even in the case of a small load, it can only reach a single span of 60 meters.

Therefore, Great Wall launched the D-type bridge. Although the truss adopts larger steel, the structure is simpler. It not only has the advantages of strong adaptability of the assembled Bailey steel bridge, but also makes up for its limitation on the span and improves the The length of the single span is reduced, and the cost of the bridge pier is saved.

Zhenjiang Great Wall Heavy Industry mainly produces Bailey steel bridges, GW D type long-span fabricated steel bridges, steel box girders and other steel structure products.

Bailey steel bridge (fabricated highway steel bridge) is a portable prefabricated steel truss bridge. This kind of bridge was invented by the British engineer Donald Bailey during the Second World War. Bailey Bridge is a widely used and popular bridge in the world. It was introduced from the United Kingdom in the 1880s.

 It has the characteristics of simple structure, convenient transportation, fast erection and easy disassembly, and also has the advantages of large bearing capacity, strong structural rigidity and long fatigue life. It can be combined into temporary bridges, emergency bridges and fixed bridges of various types and uses according to the optional span, and has the characteristics of few components, light weight and low cost.

Our company mainly produces two kinds of Bailey bridges: 321 type and 200 type.Due to the limitation of the span of the Bailey bridge, the limit of a single span is generally not more than 60 meters. Zhenjiang Great Wall Heavy Industry has produced a GW D-type prefabricated large-span steel bridge with a single span of up to 90 meters, which makes up for the Bailey bridge. of insufficiency. Surface treatment: paint, hot-dip galvanizing, mechanical galvanizing, steel structure supporting anti-corrosion, epoxy zinc-rich, polyurethane topcoat, special materials for bridge deck anti-skid treatment, etc.