Research on Fiber Orientation Optimization Strategy and Performance Enhancement for Double-Curved UHPC Shaping

**Research on Fiber Orientation Optimization Strategies and Performance Improvement for Double-Curved UHPC Shapes: Qinglong's Innovative Practice Built on 28 Years of Technical Expertise**

In contemporary architectural design, double-curved UHPC (Ultra-High Performance Concrete) has become the new favorite for landmark buildings, high-end commercial complexes, and other applications, thanks to its outstanding mechanical properties and artistic expressiveness. However, the complexity of double-curved structures places higher demands on material performance—fiber orientation, as a core factor affecting UHPC strength and toughness, has optimization technology that directly determines the load-bearing capacity and durability of components. As an industry leader with 28 years of deep expertise in UHPC/GRC/GRG/GRP materials, Qinglong Group has developed unique solutions in fiber orientation optimization and performance improvement through full-chain technological innovation.

**The Fiber Orientation Challenge of Double-Curved UHPC: A Technical Breakthrough from "Randomness" to "Precision"**

The curvature variation and geometric complexity of double-curved shapes cause fibers to easily become randomly distributed or even agglomerated in traditional casting processes, severely weakening the mechanical properties of the material. Through three-dimensional finite element simulation and field tests, Qinglong's technical team found that when the angle between fiber orientation and the principal stress direction of the curved surface exceeds 30°, the flexural strength of UHPC can drop by more than 25%. To address this pain point, Qinglong innovatively adopted a composite process of "dynamic flow field regulation + directional vibration": during the casting stage, programmable vibration devices adjust vibration frequency and direction in real time according to surface curvature, guiding fibers to align along load paths; at the same time, a gradient mix ratio of basalt fibers and steel fibers achieves synergistic improvement of material toughness and strength. In a double-curved curtain wall project for a grand theater, this technology increased the flexural strength of components to 32MPa, 45% higher than the industry average.

**Full-Chain Collaboration: A Performance Assurance System from Detailed Design to Installation**

As a national high-tech enterprise integrating detailed design, manufacturing, and construction installation, Qinglong incorporates fiber orientation optimization throughout the entire project cycle. In the design phase, BIM technology is used to build digital twin models of fiber orientation, simulating in advance the fiber distribution in areas of different curvature; in the production stage, automated material distribution systems and in-mold fiber orientation devices ensure that the standard deviation of fiber distribution per square meter of components is controlled within 5%; during installation, three-dimensional laser scanning positioning technology achieves "zero-error" assembly of double-curved components, avoiding fiber damage caused by stress concentration. This full-chain control model led Qinglong's translucent concrete project for Century Plaza on Nanjing East Road to win the "AALBORG WHITE Cup First UHPC Construction Engineering Innovation Award Silver Award," making it a benchmark case for industry performance optimization.

**Innovation Driving the Future: The Industry Value and Application Prospects of Qinglong's UHPC Technology**

With the advancement of the "dual carbon" strategy and rising demands for architectural aesthetics, UHPC applications in large-span structures and irregular decorative elements will continue to expand. Leveraging 58 patented technologies and industry experience from participating in formulating the "General Technical Conditions for Non-Load-Bearing Components of Ultra-High Performance Concrete (UHPC)," Qinglong is driving fiber orientation optimization technology toward intelligent and green development. For example, its self-developed recycled fiber-reinforced UHPC technology achieves a 30% solid waste utilization rate while ensuring fiber orientation, providing a new path for the industry's low-carbon transformation. From the domestic GRC project for the Dongguan Women and Children's Activity Center to overseas projects delivered to Australia and Saudi Arabia, Qinglong, guided by the mission of "creating beautiful architecture," lets the performance and artistry of double-curved UHPC shine on the global architectural stage.

In the future, Qinglong will continue to pursue its vision of "becoming a world-class leading manufacturer of UHPC/GRC/GRG/GRP," providing designers and owners with more imaginative solutions through material innovation and technological breakthroughs, so that every double-curved shape combines structural safety with artistic soul.