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Box Girder
Exceptional torsional resistance, making it suitable for curved bridges, wide bridges, and interchange overpasses
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Product Description
Box girder is a concrete girder with a closed box-shaped cross-section. It is classified into cast-in-place box girders and precast box girders, and is typically constructed using prestressed concrete. It is currently one of the most widely used superstructure types for long-span bridges and elevated bridges.
Key Features
• Features a closed hollow box section, providing high overall rigidity and uniform stress distribution
• The top plate, bottom plate, and web share the load, resulting in excellent resistance to bending and torsion
• Available in configurations such as single-box single-chamber, single-box multi-chamber, and double-box multi-chamber
• Typically used in conjunction with formwork baskets, scaffolding, and sliding formwork systems during construction
Primary Functions
1. As the core load-bearing component of the bridge superstructure, it directly supports the loads from vehicles and pedestrians on the bridge deck.
2. It distributes the load evenly to the cap beams, piers, and foundations.
3. It offers excellent overall structural performance, capable of meeting the demands of long-span, heavy-load bridges.
4. Its top surface can serve directly as the bridge deck structure, providing good structural integrity and a smooth ride for vehicles.
Advantages
1. High stiffness and minimal deformation, resulting in a smooth bridge alignment and a comfortable driving experience
2. Exceptional torsional resistance, making it suitable for curved bridges, wide bridges, and interchange overpasses
3. Excellent structural integrity with outstanding resistance to seismic activity, wind loads, and overturning
4. Suitable for large spans, allowing for longer spans and reducing the number of piers
5. Clean and aesthetically pleasing appearance, ideal for urban elevated structures and scenic bridges
6. High durability with minimal long-term maintenance requirements
Applications
Widely used in highway bridges, railway and high-speed railway bridges, urban elevated bridges, interchange bridges, bridges spanning rivers and waterways, continuous beam bridges, and rigid-frame bridges, this is the preferred girder type for modern large- and medium-scale bridge projects.
◎ Production Capacity
The company currently occupies a total area of over 50 mu, with workshop space exceeding 20.000 square meters. It is equipped with more than 100 units of advanced formwork machinery, including 3 large-scale laser cutters, 3 CNC intelligent bending machines, 1 fully automatic four-roll plate rolling machine, 2 three-roll plate rolling machines, and 1 GB4260 gantry horizontal metal band saw; The company employs 10 professional engineering and technical staff and over 80 workers, with an annual production capacity of approximately 20.000 metric tons.
◎ Company Qualifications
The company currently holds two invention patents and more than 70 utility model patents related to bridge formwork.
China Railway No. 2 Engineering Group, No. 3 Engineering Group, No. 4 Engineering Group, No. 6 Engineering Group, No. 10 Engineering Group, No. 15 Engineering Group, No. 14 Engineering Group, No. 17 Engineering Group, No. 22 Engineering Group, China Railway Tunnel Group, China Railway Construction Engineering Group, Shandong Road & Bridge Group, Shandong Expressway Engineering Construction Group, China Water Resources No. 4 Engineering Group, China Communications Construction No. 2 Highway Engineering Group, China Communications Construction No. 4 Highway Engineering Group, China State Construction Engineering No. 3 Engineering Group, Sichuan Road & Bridge, etc.
◎ Packaging & Shipping
For many years, the company has consistently adhered to a development strategy centered on technological innovation, quality as the foundation of survival, and reputation as the cornerstone of its brand. It maintains strict quality control, standardizes technical processes, prioritizes investment in research and development, rigorously manages production, and focuses on enhancing efficiency through effective management.
◎ Our Partners
In recent years, the company has been assigned to carry out construction projects for China Railway No. 2, No. 3, No. 4, No. 6, No. 10, No. 14, No. 17, and No. 22 Engineering Bureau; China Railway Tunnel Group; China Railway Construction Engineering Group; Shandong Road & Bridge Group; Shandong Expressway Engineering Construction Group; China Water Resources No. 4 Engineering Bureau; China Communications Construction No. 2 Highway Engineering Bureau; China Communications Construction No. 4 Highway Engineering Bureau; China State Construction Engineering No. 3 Engineering Bureau; and Sichuan Road & Bridge, among others.
keyword:
Box Girder
What materials are primarily used in your products?
Q235B: General-purpose carbon structural steel, offering high cost-effectiveness, commonly used for standard bridge formwork, pile cap formwork, and pier formwork.
Q355B (formerly Q345B): Low-alloy high-strength steel, offering higher strength and greater durability, commonly used for box girder formwork, hanging basket formwork, high pier formwork, and other areas subject to high loads.
Common High-Quality Materials for Panels
Q235B Cold-Rolled Sheet / Hot-Rolled Sheet: Standard panel material, offering excellent value for money
Q355B High-Strength Steel Sheet: The preferred choice for load-bearing applications and repeated reuse
Do you offer customization services?
What is your minimum order quantity?
What is the delivery timeframe?
What type of packaging is used?
• Corner guards and protective padding installed to prevent damage during transport
• Securely bundled by size and secured with steel straps
• Large formwork is reinforced with channel steel or square tubing and shipped either fully assembled or in loose pieces
What payment methods are accepted?
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