Analysis of Bearing Capacity Calculation Methods and Key Influencing Factors for UHPC Panels Used as Floor Slabs

In the field of building structures, Ultra-High Performance Concrete (UHPC) is becoming an innovative force in floor slab design with its outstanding mechanical properties. As an industry leader with 28 years of full-chain experience in UHPC/GRC/GRG/GRP materials, Qinglong Group will analyze, from a professional perspective, the load-bearing capacity calculation methods and key influencing factors when UHPC panels are used as floor slabs, providing designers and owners with a scientific basis for selection.

### Theoretical Basis and Practical Approach for Calculating UHPC Floor Slab Load-Bearing Capacity

The load-bearing capacity calculation of UHPC floor slabs must be built on the dual foundation of material properties and structural mechanics. Its core formula needs to incorporate key parameters such as UHPC's compressive strength (typically ≥150MPa), flexural strength (≥20MPa), and elastic modulus, with refined simulation conducted through finite element analysis software. During the detailed design phase, Qinglong Group, in accordance with the industry standard "General Technical Conditions for Non-Load-Bearing Components of Ultra-High Performance Concrete (UHPC)", adopts a three-dimensional calculation model of "material properties - cross-sectional form - load combinations" to ensure the accuracy of results. Compared with traditional concrete, UHPC, thanks to the improved toughness brought by steel fiber incorporation, can reduce floor slab thickness by more than 30%, demonstrating significant advantages in large-span spaces (such as exhibition centers and commercial complexes).

### Four Key Factors Affecting the Load-Bearing Capacity of UHPC Floor Slabs

**Material mix optimization** is the foundation of load-bearing capacity. Through 28 years of process accumulation, Qinglong's production base has established a database covering steel fiber content (typically 2-5%), silica fume replacement rate, and mechanical properties, ensuring that the coefficient of variation of compressive strength for each batch of UHPC material is ≤5%. **Cross-sectional form design** directly affects force-bearing efficiency; special-shaped section designs such as ribbed and hollow sections can increase load-bearing capacity by 40%, which was verified in the Nanjing Road Century Plaza renovation project undertaken by Qinglong. **Reinforcement schemes** must balance structural safety and economy; BIM technology is used to simulate the impact of different rebar arrangements on crack control, achieving the "strong shear, weak bending" design goal. **Construction technology** is equally critical: Qinglong's proprietary UHPC component curing process achieves an early strength of 85% of the design value, effectively avoiding insufficient load-bearing capacity during construction.

### Full-Chain Services Ensure Successful Implementation of UHPC Floor Slab Applications

As a National High-Tech Enterprise, Qinglong Group has established a full-process service system from detailed design to after-sales maintenance. In the design phase, parametric design software is used to optimize UHPC panel reinforcement and anchoring joints; in production, automated casting equipment ensures component precision; during construction and installation, 3D laser scanning positioning technology achieves millimeter-level splicing error control. To address the cost control concerns of real estate developers, Qinglong offers a "UHPC + traditional materials" composite floor slab solution that reduces overall cost while ensuring load-bearing capacity. To date, Qinglong has provided UHPC floor slab solutions for more than 500 landmark projects across China, with its overseas market covering 12 countries including Malaysia and Australia.

The load-bearing capacity calculation of UHPC floor slabs represents a deep integration of materials science and structural engineering, requiring suppliers to possess full-chain capabilities from theoretical research to engineering practice. With 28 years of professional expertise, Qinglong Group will continue to promote innovative applications of UHPC in the construction field, providing technical support for fulfilling its mission of "Creating Beautiful Buildings", helping designers break through traditional structural limitations and create architectural spaces that combine both safety and aesthetics.