Discussion and Application Analysis of Key Technologies for Achieving High Openwork Rate in UHPC Shaping

When architectural aesthetics and structural engineering collide at millimeter-level precision, UHPC—with a compressive strength 300% beyond traditional concrete—is redefining the art of perforation in building envelopes. As an industry player with 28 years of deep engagement in the UHPC/GRC/GRG/GRP materials field, we have witnessed how this material technology makes "lightness and strength" no longer a contradiction; especially in realizing high-perforation designs, its technical breakthroughs are reshaping the visual language of modern architecture.

1. Material Science Breakthroughs in High-Perforation UHPC Forming

The material properties of ultra-high performance concrete (UHPC) offer inherent advantages for high-perforation designs. Through the synergy of steel fibers and ultra-fine silica fume, the material achieves ductility beyond the reach of traditional concrete while maintaining a 200MPa-class compressive strength. In the Dongguan Women and Children's Activity Center project, the Qinglong team applied a proprietary UHPC formulation to raise the component perforation ratio to 65% while still meeting the wind pressure load requirements of the curtain wall structure. This "skeleton-style" structural design cuts weight by more than 30% compared with GRC materials, greatly reducing the load-bearing pressure on the building's main structure.

2. The Dual-Engine Drive of Digital Design and Precision Manufacturing

Realizing high-perforation UHPC designs depends on the deep integration of parametric design and intelligent manufacturing. Digital models built with Rhino and Grasshopper allow precise control over the topology of perforated units, ensuring the mechanical balance of every opening. The five-axis machining centers at Qinglong's production base in Nanning, Guangxi, keep design accuracy within ±0.5mm, providing the technical guarantee for the seamless assembly of more than 3,000 irregular perforated units in the translucent concrete project at Century Plaza on Nanjing East Road. Notably, this digital workflow shortens the detailed design cycle by 40% compared with traditional methods, effectively easing the project schedule pressure faced by real estate developers.

3. Key Technical Points in Engineering Practice

In practical applications, high-perforation UHPC components must overcome three major technical bottlenecks: first, solving stress concentration at perforation edges through oriented fiber arrangement technology; second, adopting vacuum casting to reduce air bubbles and ensure component density; third, developing dedicated release agents to solve the demolding challenges of complex perforated designs. The industry standard "General Technical Conditions for Non-Load-Bearing Components of Ultra-High Performance Concrete (UHPC)", developed with Qinglong's participation, is a systematic summary of these key technologies. Take, for example, the double-curved perforated curtain wall of a landmark project: pre-assembly simulation using BIM technology kept on-site installation errors within 2mm, achieving a flawless realization of the design intent.

4. Full-Chain Services to Ensure Design Realization

As a national high-tech enterprise integrating detailed design, manufacturing, and construction installation, Qinglong has built a service system covering the entire UHPC life cycle. For designers concerned about design freedom, we provide end-to-end technical support from scheme optimization to material selection; to address owners' concerns about durability, we issue test reports covering 1,000 freeze-thaw cycles; and to solve installation challenges for contractors, we have innovatively developed a modular hoisting system. This "one-stop" service model enabled the precise delivery of 12,000㎡ of high-perforation UHPC curtain wall in a cultural center project in Saudi Arabia, winning high recognition from international clients.

From the dynamic skins of commercial complexes to artistic installations in museums, UHPC high-perforation technology is giving architecture more diverse possibilities of expression. Qinglong's 28 years of technical accumulation show that when material science, digital technology, and engineering experience join forces, even "impossible" architectural aesthetics can become reality. Looking ahead, with the combined application of UHPC and materials such as GRC and GRG, we will continue to push the boundaries of architectural decoration, offering designers a broader creative stage and shaping more vibrant architectural expressions for our cities.