Galvanized substrate YX51-226-678 composite floor deck.

YX51-226-678 Floor Deck Technical Specifications

As a critical component in modern steel structure building systems, the YX51-233-699 floor deck stands out as the preferred solution for long-span floor systems due to its scientific cross-sectional design and excellent mechanical performance. This model employs a continuous roll-forming process, achieving a balance between load-bearing capacity and lightweight construction through precise parameter combinations: wave height (51mm), wave pitch (233mm), and effective width (699mm).

I. Structural Characteristics Analysis

1. Optimized Geometric Parameters
   The 51mm wave height ensures sufficient bending stiffness while effectively controlling self-weight. The 233mm wave pitch creates a stable truss effect, and the 699mm effective width balances transportation convenience and on-site construction efficiency. Finite element simulations verify that under a live load of 2.5kN/m², the deflection value is only L/300 (where L is the span).

2. Material Performance
   Made from Q345B-grade steel with a yield strength of 205-345MPa and a zinc coating weight of 40-275g/m² on both sides. Special anti-slip embossing treatment increases concrete bond strength by 40%, with no visible corrosion observed in salt spray tests.

3. Innovative Joint Connections
   The interlocking system enables seamless connections between panels, combined with patented stud welding technology to ensure the integrity of the composite floor. Test data show that this connection method increases shear stiffness by 65% compared to traditional forms.

II. Construction Application Advantages

1. Rapid Assembly Features
   Standardized production keeps single-panel weight between 15-18kg, allowing two workers to handle installation. The 678mm width aligns with conventional modules, reducing on-site cutting waste (waste rate <3%).

2. Composite Load-Bearing Performance
   When combined with 150mm thick concrete, the floor achieves a fire resistance rating of 2 hours (GB50016 standard). In seismic fortification zones of intensity 8, shaking table tests confirm it meets damping requirements for Category II buildings.

3. Economic Performance
   Compared to traditional cast-in-place floors, overall costs are reduced by 22%-28%. For a 10,000㎡ project, construction time can be shortened by 15-20 days, with scaffold usage reduced by approximately 30%.

III. Typical Application Scenarios

• Long-span industrial plants (single span ≤36m)

• Core tube areas of high-rise steel structure residential buildings

• Standard floor systems in prefabricated buildings

• Reinforcement and strengthening of existing structures in renovation projects

Design verification should follow the "GB51022-2015 Technical Code for Steel Structures of Lightweight Buildings with Gabled Frames," with particular attention during construction to the anchorage length of deck supports (≥75mm) and temporary support spacing (≤2m).