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Box Girder Formwork

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Box Girder Formwork
Box Girder Formwork
Box Girder Formwork
Box Girder Formwork
Box Girder Formwork
Box Girder Formwork
Box Girder Formwork
Box Girder Formwork
Box Girder Formwork
Box Girder Formwork
Box Girder Formwork
Box Girder Formwork

Box Girder Formwork

Box girder steel formwork is a kind of formwork used in bridge construction, which is characterized by a box-shaped structure in cross section. The box girder steel mold plate mainly consists of four parts: outer mold, inner mold, end mold and bottom mold. The specifications of Pansol box girder steel formwork are varied and can be customized according to different project requirements. The design and manufacture of this type of formwork needs to take into account factors such as the actual span of the bridge, the construction method and the expected loads.

Product Details

Product technical parameters

  • Material: q235b steel, durable and reusable.

  • Delivery: Drawing design and OEM customization according to project requirements.

  • Panel thickness: 6 mm or more.

  • Formwork components: outer formwork, inner formwork, end formwork and bottom formwork

  • Connecting accessories: bolts, supporting system, channel steel, etc.

  • Surface treatment: spraying anti-rust paint to minimize rusting of formwork.

  • Application works: concrete pouring and molding of precast box girder structures for bridges.


Product advantages

  • Good molding effect: the surface of box girder steel formwork is flat and smooth, the splicing joints are tight and tight, no gaps and no leakage of slurry, these features ensure the appearance quality after concrete pouring.

  • Long service life: our box girder steel formwork uses high quality steel with high stability and strength, which is not easy to be deformed, warped or cracked in the process of use.

  • High reuse rate: the box girder steel formwork can be reused many times, which not only reduces the consumption of materials, but also reduces the cost and time brought by material treatment and recycling, and is also conducive to environmental protection.

  • Short construction cycle: Due to the high precision of box girder steel mold plate production, it can be quickly assembled without the need for on-site shearing, combining and other cumbersome processes, which greatly shortens the construction cycle and improves the efficiency of the project.

1.Product Overview & Definition

Bridge formwork refers to a temporary or permanent mold system into which fresh concrete is poured and cast to form specific structural components of a bridge. This is a critical engineered system that must withstand the immense hydrostatic and dynamic loads of wet concrete, construction live loads, and environmental forces, while ensuring the precise dimensional accuracy and surface finish required for bridge structures. Our formwork systems are not merely containers for concrete but are high-precision tools that directly impact structural integrity, project timelines, and overall costs.


2.Key Application Scenarios

Our formwork solutions are tailored for all major bridge components:

Substructure:

  • Abutments and Wing Walls: Custom-sized formwork for complex earth-retaining structures.

  • Piers and Columns: Systems for circular, rectangular, or irregular-shaped columns of significant height, including single-piece "jump" or "slip" forming systems for tall piers.

  • Pile Caps and Foundations: Heavy-duty formwork for mass concrete pours.

  • Superstructure:

  • Girders and Beams: Formwork for precast I-beams, U-beams, and box girders, as well as cast-in-situ girders.

  • Deck Slabs: Large-area formwork systems supported by falsework or suspended from completed girders.

  • Segmental Balanced Cantilever Construction: Specialized self-launching form travelers for constructing bridge decks segment-by-segment from piers.

  • Bridge Overhangs (Haunches): Brackets and systems for forming cantilevered deck sections.


3. Core Product Features & Technical Advantages

3.1. Structural Performance & Safety

  • High Load-Bearing Capacity: Engineered to withstand concrete pressures exceeding 90 kN/m², with options for higher ratings for specialized applications like pylon construction.

  • Minimal Deflection: Utilizes high-strength steel and aluminum alloys with controlled elastic deformation (typically < L/270 or L/360 of panel span) to ensure dimensional accuracy and seamless concrete finish.

  • Integrated Safety Systems: Features built-in guardrail posts, toe guards, and scaffold attachment points to comply with stringent international safety standards (e.g., EN 12812, EN 12813).


3.2. Unmatched Efficiency & Constructability

  • Modular Design: Standardized panel sizes with universal connection details enable rapid assembly and disassembly, reducing labor and crane time.

  • Adaptability & Reusability: Highly configurable systems suitable for diverse geometries. High-quality materials and coatings ensure long service life with over 100 reuses for steel systems, delivering low cost-per-pour.

  • Mechanized Systems: We supply advanced Self-Climbing Formwork (Auto-Climbing Systems) for bridge pylons and tall piers, which use hydraulic cylinders to climb, eliminating crane needs for each lift and drastically accelerating cycle times.


3.3. Superior Finish & Precision

  • High-Quality Facing Materials: Options include high-density, phenolic-coated film-faced plywood for smooth, consistent finishes, or steel skin for high-reuse applications requiring exceptionally flat surfaces.

  • Tight Tolerances: Manufactured to meet international tolerance standards (e.g., ±2mm over a 3m span), ensuring precise alignment and geometry of the final concrete structure.

  • Leak-Free Joints: Proprietary sealants and jointing systems prevent grout loss, minimizing surface blemishes and costly post-cast repairs.


4. Material & System Specifications

Steel Formwork: For heavy-duty, high-reuse applications. Panels typically use hot-rolled steel sheet (minimum yield strength 235 MPa) with structural steel frames.

Aluminum Formwork: Lighter weight (approx. 1/3 that of steel) for faster handling and reduced crane demand, ideal for repetitive layouts.

Climbing Formwork: A system comprising wall formwork, working platforms, and climbing rails that uses hydraulic jacks to "climb" the hardened concrete structure.

Formwork Traveler: A movable formwork system used in balanced cantilever construction, capable of supporting and forming each new bridge deck segment.


5. Compliance & Engineering Support

Our systems are designed and certified to comply with major international standards, including EN 12812, EN 12813, and AS 3610. We provide comprehensive engineering support, including:

Formwork Layout & Design Services

Load Calculations & Structural Analysis

Detailed Assembly and Striking Procedures


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+86 15116183980

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