Innovative Steel Frame Formwork System Technical White Paper

——Precision Casting Solution Based on Q235B Steel Frame

As a groundbreaking advancement in cast-in-place concrete construction, our steel frame composite formwork system achieves revolutionary efficiency improvements for shear walls and structural columns through material mechanics optimization and modular design. The core components include Q235B low-alloy structural steel frames (yield strength ≥235 MPa) and multilayer composite panels, delivering significantly enhanced performance metrics compared to traditional methods.

I. Technical Breakdown of System Components

1. Load-Bearing Frame System

Fabricated from Q235B rolled steel profiles compliant with GB/T 700 standards, finite element analysis confirms deflection ≤L/400 under 60 kN/m² fresh concrete lateral pressure (exceeding JGJ 162-2008 requirements). Modular rapid-disassembly joint design reduces installation time to 2.8 labor-hours/m² per layer.

2. Composite Panel Technology

12mm birch plywood laminated with 0.8mm polypropylene (PP) film creates dual-phase interface performance:

45° cross-grain orientation increases elastic modulus to 11,000 MPa

PP film contact angle >110° enables zero-release agent operation (validated per GB 50204-2015 Annex D)

II. Economic Validation Through Engineering Practice

Field data from 28 projects including Zhengzhou-Jinan High-Speed Rail Bridge:

Lifecycle Cost: 94.7% steel strength retention after 500 cycles (Third-party report CMT-2023-0765)

Dimensional Control: Laser-aligned slot system ensures ±1.2mm sectional tolerance, reducing concrete waste by 19%

Labor Optimization: 22.3 kg/m² unit weight allows manual handling, cutting equipment costs by 37% vs traditional systems

III. Performance Under Extreme Conditions

1. Thermal Compensation Design

-20°C operation: 1.2mm/m thermal expansion gap (per CECS 281:2010 cold-formed steel specifications)
50°C environments: PP film Vicat softening point >150°C ensures continuous operation stability

2. Complex Geometry Adaptation

Adjustable edge modules (300-1200mm width) enable precise curvature forming for radii ≥800mm (refer to 18XG101-3 detailing standards)

IV. Project Performance Metrics

V. Certifications & Quality Assurance

Complies with GB50204 fair-faced concrete standards (surface flatness ≤2mm/2m)

Passes 1200-hour salt spray test per ISO 9227 (CNAS accredited)

BIM component library compatible with Autodesk Revit 2024+

For access to the Steel Frame Formwork Construction Methodology (Code: GF-2023-019) or customized solutions, contact our Technical Service Center.
We provide lifecycle cost modeling reports to optimize project decision-making.