Permanent Steel Girder Bridges Q355 Bespoke Segmental Box

A box girder bridge is one in which the principal structural element is one or more closed cells, acting in bending. Box girders are used for highway bridges, railway bridges and footbridges – different structural forms are chosen for each of these applications.

For spans in the range 45 to 100m, multiple girders are used, with the slab spanning transversely between the webs. For such configurations, relatively narrow rectangular steel box sections have sometimes been chosen. However, such sections are rather small and introduce significant hazards for access for construction and maintenance and are rarely chosen now for this span range. An alternative configuration that is now more commonly used employs ‘open topped’ trapezoidal girders. These girders have a steel bottom flange, inclined steel webs and a narrow steel flange on top of each web. The closed cell is formed by the reinforced concrete deck slab. With this configuration, material access during construction can be minimized by the use of permanent formwork (or precast slabs) and for maintenance the cells are larger than those for rectangular steel boxes, thus reducing the difficulties of access.

Steel box girders

For spans over about 200m, all steel construction is often used. The roadway is then carried on a longitudinally stiffened steel top flange, commonly known as an orthotropic steel deck. Such construction is lighter but is more complex to fabricate.

Types of box girders

Advantages of steel box girders, compared to 'I' girders:

*High torsional stiffness and strength, giving greater suitability for horizontally curved bridges, greater aerodynamic stability and reduced susceptibility to lateral buckling of flanges (in lateral-torsional or distortional buckling modes)

*Reduced need for support points

*Improved durability and reduced maintenance of protective coatings (less exposed surface, fewer edges, avoidance of exposed horizontal surfaces, no exposed bracing and stiffeners).

*The clean lines of a closed box girder are also often considered give an excellent appearance, particularly for footbridges where the visual impact is considered to be important.

About FAMOUS

FAMOUS has made a name for itself in the list of top steel structure manufacturers in China. Serving contractors, developers and architecturers worldwide since a decade ago, we have been offering a variety of steelwork fabrication services including, but not limited to:

* Free estimate and technical proposal for your project.

* CAD design engineering service by highly-trained team of professionals.

* Steel structures components fabrication in EU, U.S. and AS/NZS standards for bailey bridge, truss bridge, beam bridge and box girders.

* Steel framing structures fabrication in EU, U.S. and AS/NZS standards for commercial, industrial or residential buildings.

As the co-founder of FAMOUS Engineering Company, Mr.Tomy GAO has been in the construction field for many years, and established series of companies with the target to create ecological chain in the building construction industry.

Nowadays, under FASECBuildings Group, there are several typical companies namely:

1. Hangzhou FAMOUS Steel Engineering Company

2. FASEC (Hangzhou) Window Wall Company

3. Hangzhou FASEC Building Material Company

Hangzhou USEU Metal Manufacturing Company and some more not listed here.

The key business scope of FASECbuildings Group include but not limited at:

1. Structural Steelworks & Steel Framing (Heavy/Light) construction

2. Glass Windows Doors, Curtain Wall Facade, Aluminum Panels Cladding, Partition Walls, Railing & Louvers, Screens Grills, BIPV etc

3. Building Roof Wall Flooring integrated material and other interiors new material R & D.

FASECbuildings Group always aim to offer cost saving prefab materials for USA-Europe & UK-Australia etc foreign standard market customers, with freely technical supports like engineering design when needed/detailing drawings/site construction guidance etc. We have multiple certification/experiences as well as the overall 2D/3D modelling capability for the building framing and the surroundings.

Brief Introduction of Subsidiaries:

1. Hangzhou FAMOUS Steel Engineering Co.,ltd. focus on the Design & Construction of various Steel Buildings and Structural Steelworks fabrication. The company have received a lot of foreign projects ranging from warehouse buildings, multi-storey apartments, high rise office & hotel buildings, space framing theaters, triangle truss buildings, to steel bridges, handling machinery framing, power plant towers, mining production line steelworks, cement production line steelworks, petro-chemical rackings etc. Basically the company have the full capability to operate various large-scaled projects complex except the simple building project.

2. FASEC (Hangzhou) Window Wall Company specializes in the offer of various aluminum & glass-related products design/manufacture/supply & installation. We have successfully supplied quite a lot of insulated & laminated glass panes, windows, glass doors, curtain walls, partition walls, railings, louvers, grills, metal claddings etc not only in China but also around the world. Australian standard, British Standard, Europe standard, and American standard etc aluminum & glass facade products are in our main research & development range.

3. Hangzhou FASEC Building Material Company play the role of the bridging and lubricating with different customers of new building material requirement for roof wall floor and interiors. Our building material team always are on the way to research and develop new style building material to save cost and time of building industrial customers. USEU Metal factory is its strong manufacturing backup force, and our own engineering team can offer various technical supports too.

FASECBuildings Group have passed by series of certifications like the quality management system (ISO 9001:2008), the Europe product quality control system EN1090, the structural fabrication system certificates of Europe ISO3834 and America AWS D1.1, the Australia AS2047 Glazed Windows Doors Qualifications etc.

Currently, FASECbuildings Group have spread its network across Xi’an, Shanghai, Nanjing, Guangzhou, Wuhan, Xiangfan, Liuzhou, Wuhu, Suzhou, Zhengzhou, and Yunnan, etc., as well as exporting business with America, Canada, Australia, New Zealand, United Kingdom, Germany, France, Bolivia, Chile, Argentina, Uruguary, Peru, Thailand, Philippine, Nigeria, Vietnam, South Africa, Ghana, Kenya, Zambia, UAE, Sudan, Iran, Irap, Angola, Poland, Mongolia, Russia and so on.

Through so many domestic & overseas project cases, FASECbuildings Group has successfully won reputations and experiences not only in China, but also in various foreign standards markets with examples of Europe Standards, America Standards, Australia Standards, British Standards, etc building related materials and building construction.

We keep improvement and innovation, with the slogan of “USA-EUROPE Standard Engineering and Quality Control Build Our Brand Reliability! One Trial Order Bring Constant Cooperation!”

Warmly welcome Customers to visit and communicate with us for free budget and detailed products catalog obtaining. Thank you all.