How to Design UHPC Curtain Walls for Wind Load Resistance: Key Technologies and Engineering Practice Research

**How to Design the Wind Load Resistance Performance of UHPC Curtain Walls: Research on Key Technologies and Engineering Practice**

In the field of architectural curtain walls, wind load resistance is a core indicator for ensuring building safety and durability. Especially for super high-rise buildings and projects in strong wind regions, UHPC (Ultra-High Performance Concrete), with its ultra-high strength, excellent toughness, and design flexibility, has become an ideal choice for wind load resistant curtain wall design. As an industry leader with 28 years of deep expertise in UHPC/GRC/GRG/GRP materials, Qinglong Group, leveraging its full-chain technical advantages, has been deeply involved in wind load resistance solutions for numerous landmark projects in China. This article analyzes the core logic of wind load resistant design for UHPC curtain walls from three aspects: technical principles, design key points, and engineering practice.

### The Underlying Logic of Wind Load Resistant Design for UHPC Curtain Walls: Material Properties and Structural Advantages

The wind load resistance performance of UHPC curtain walls stems from breakthroughs in the material itself. Compared with traditional curtain wall materials, UHPC achieves a compressive strength above 150MPa and a flexural strength above 20MPa through its steel fiber reinforcement system, with a density only 1/3 that of natural stone, providing a "lightweight yet high-strength" foundation for wind load resistant design while reducing structural loads. Through 28 years of material formula optimization, Qinglong Group has raised the elastic modulus of UHPC to above 45GPa, ensuring that curtain wall deformation under strong wind loads stays within the range permitted by standards and avoiding structural fatigue caused by resonance effects.

At the structural design level, UHPC curtain walls adopt a three-tier "material-component-system" wind load resistance system: at the material level, crack resistance is enhanced through fiber content and interface strengthening technology; at the component level, thin-walled hollow structures and rib-reinforced designs are adopted — for example, the UHPC curtain wall panels developed by Qinglong, optimized through BIM parametric design, control thickness within 30-50mm while achieving deflection ≤L/200 (L is the span) under a 1.5kPa wind load; at the system level, rigid connections between embedded parts and the main structure, combined with seismic bearing design, form a wind load resistance system that combines rigidity and flexibility.

### Key Technologies in Wind Load Resistant Design: From Load Calculation to Joint Innovation

The core of wind load resistant design for UHPC curtain walls lies in precisely matching project requirements. First, wind load calculations must be performed in accordance with the Load Code for the Design of Building Structures, combined with the basic wind pressure at the project location (e.g., coastal areas can exceed 0.75kN/m²), building height, and shape coefficient, to determine the standard wind load value for the curtain wall panels. Qinglong's technical team uses its self-developed wind tunnel simulation software to simulate wind pressure distribution on buildings with complex shapes, ensuring the accuracy of design loads.

Joint design is the critical chokepoint of wind load resistance performance. Qinglong adopts "three-dimensionally adjustable" connection joints, which use mechanical interlocking between stainless steel embedded parts and UHPC components to achieve fine adjustment in the X, Y, and Z directions, ensuring installation accuracy while absorbing vibration energy generated by wind loads through elastic gaskets. In a coastal landmark project, this joint design successfully withstood the impact of a Category 12 typhoon, with a curtain wall system integrity rate of 100%. In addition, edge reinforcement technology (such as carbon fiber cloth wrapping) and sealant selection (weather-resistant silicone sealant) further enhance the overall wind load resistance capacity of the system.

### Engineering Practice: Full-Chain Assurance from Laboratory to Project Site

The implementation of theoretical design relies on rigorous testing and verification. Qinglong Group has established an industry-leading wind load resistance laboratory at its production base in Nanning, Guangxi, capable of simulating wind pressure environments of typhoons up to Category 18 and conducting 100,000 fatigue loading tests on UHPC curtain wall panels. Taking the Nanjing East Road Century Plaza renovation project as an example, after its light-transmitting UHPC curtain wall passed cyclic loading tests at 1.8kPa wind pressure in the laboratory, on-site installation adopted Qinglong's "modular hoisting" process, with 3D laser positioning ensuring installation error ≤2mm, ultimately achieving stable operation during Shanghai's typhoon season.

As a National High-Tech Enterprise and a participant in formulating UHPC industry standards, Qinglong Group has transformed 28 years of engineering experience into standardized solutions: from wind load simulation analysis in the detailed design stage, to material strength control in production (compressive strength of UHPC test blocks in each batch ≥180MPa), to dynamic load monitoring during construction and installation, forming a full-chain "design-production-construction" wind load resistance assurance system. To date, Qinglong UHPC curtain walls have been successfully applied in 300+ projects across the country, including wind load sensitive buildings such as commercial complexes and airport terminals, with overseas markets also expanded to strong wind regions such as Singapore and Australia.

### Conclusion: Future Trends in Wind Load Resistant Design for UHPC Curtain Walls

As building heights and architectural complexity increase, wind load resistant design for UHPC curtain walls is developing toward "intelligence" and "refinement". Qinglong Group is exploring embedding sensor technology into curtain wall systems to achieve real-time wind load monitoring and early warning, combined with AI algorithms to optimize structural design. In the future, the composite application of UHPC with materials such as GRC and GRP will further expand the boundaries of wind load resistant curtain wall design, providing more possibilities for building safety and aesthetic expression. As an industry pioneer, Qinglong has always upheld the mission of "creating beautiful architecture", providing reliable wind load resistance solutions for global building projects through technological innovation and full-chain services.