Research on Fiber Orientation Optimization Strategies and Mechanical Performance Improvement of Double-Curved UHPC Components

Under the dual pursuit of contemporary architectural aesthetics and structural performance, double-curved UHPC forms, with their unique artistic expressiveness and mechanical challenges, have become both a technical difficulty and an innovation focus in the high-end architectural decoration field. As an industry leader with 28 years of full-chain experience in UHPC/GRC/GRG/GRP materials, Qinglong Group has always taken materials science as its cornerstone, using fiber orientation optimization technology to overcome the mechanical bottlenecks of complex forms and providing solid technical support for bringing architects' creative visions to life.

Mechanical Challenges of Double-Curved UHPC Forms and the Core Value of Fiber Orientation Optimization

Due to complex curvature variations in double-curved structures, traditional casting processes easily result in uneven fiber distribution, creating performance weaknesses in stress concentration areas. Through its self-developed fiber dispersion simulation system, combined with CT scanning technology to visualize the three-dimensional distribution of fibers, Qinglong Group found that orienting fibers along the principal stress direction of the curved surface can increase the flexural strength of components by more than 30%. For example, in the translucent concrete project of the Nanjing East Road Century Plaza renovation, by adjusting the mix ratio and orientation angles of steel fibers and polypropylene fibers, the company successfully achieved a lightweight design for 25-meter-span double-curved panels, reducing dead weight by 28% compared with traditional solutions while simultaneously meeting both light transmittance and structural safety requirements.

Multi-Dimensional Optimization Strategy: Full-Process Innovation from Material Mix to Forming Process

The "Material-Structure-Process" collaborative optimization system built by Qinglong Group provides systematic solutions for double-curved UHPC forms. At the material level, 1200MPa-grade ultra-fine steel fibers combined with nano-calcium carbonate composite modification technology increase the matrix-fiber interface bond strength by 40%; in the forming stage, the pioneering "centrifugation-vibration" composite forming process, with programmable robotic arms controlling the casting path, ensures that the directional distribution precision of fibers across different areas of the double-curved surface reaches 92%. This full-chain technical advantage enabled Qinglong to perfectly achieve seamless integration between 5-meter-radius double-curved GRC curtain wall panels and UHPC shading components in the Dongguan Women and Children's Activity Center project, which won the Silver Award of the AALBORG WHITE Cup GRC Construction Engineering Innovation Award.

Verified by Engineering Practice: Performance Leap from Laboratory to Landmark Projects

Tempered by more than 2,000 projects, Qinglong Group has established a full life-cycle quality control system covering everything from detailed design to after-sales maintenance. To address the warping deformation commonly seen in double-curved UHPC components, it developed dedicated release agents and steam curing curves, controlling dimensional accuracy within ±2mm; by using BIM technology to simulate installation stresses, combined with 3D laser scanning positioning, "zero-error" joining of complex curved components has been achieved. This professional capability has been successfully applied in overseas projects such as the podium renovation of the Petronas Twin Towers in Kuala Lumpur, Malaysia, and the decoration of royal palaces in Saudi Arabia, fully verifying the reliability of fiber orientation optimization technology in extreme environments.

As a national high-tech enterprise and a participant in setting UHPC industry standards, Qinglong Group has always upheld the mission of "creating aesthetically beautiful architecture," deeply integrating material innovation with engineering practice. The fiber orientation optimization technology for double-curved UHPC forms not only breaks through the performance boundaries of traditional building materials, but also provides architects with complete technical support from creative concept to engineering implementation through Qinglong's full-chain service capabilities. Going forward, Qinglong will continue to explore the composite applications of UHPC with GRC, GRG and other materials, leveraging 28 years of professional expertise to drive architectural decoration materials toward higher performance and greater creativity.