How to Optimize Fiber Orientation in Double-Curved UHPC Forms: A Study Based on the Synergy of Structural Performance Enhancement and Forming Processes

The Art and Science of Double-Curved UHPC: Fiber Orientation Optimization Is the Key to Resolving the Conflict Between Aesthetic Form and Structural Performance.

Driven by both contemporary architectural aesthetics and engineering technology, double-curved UHPC (Ultra-High Performance Concrete) has become the "new favorite" of high-end projects such as landmark buildings and cultural venues, thanks to its outstanding mechanical performance and exceptional expressive form. However, the forming quality and long-term performance of such complex curved structures depend heavily on precise control of fiber orientation within the material. As an industry leader with 28 years of full-chain experience in UHPC/GRC/GRG/GRP materials, Qinglong Group deeply understands the decisive role of fiber orientation optimization for double-curved UHPC components—it is not only the key to achieving "millimeter-level" dimensional precision, but also the core of ensuring structural safety and durability.

Double-Curved UHPC Fiber Orientation: A Shared Pain Point Between Structural Performance and Forming Technology

Fiber orientation optimization for double-curved UHPC components is essentially a deep collaboration between materials science and engineering practice. In traditional casting processes, fibers are prone to localized clustering or disordered orientation under gravity and flow-field effects, causing tensile strength differences of over 30% across different regions of the curved surface, directly affecting the crack resistance and load-bearing capacity of the components. Taking the double-curved facade of a certain grand theater as an example, early unoptimized fiber distribution caused micro-cracks in components after hoisting; later, through process adjustments, fiber orientation deviation was controlled within 5°, significantly improving structural stability. At the detailed design stage, Qinglong Group uses BIM technology to simulate fiber flow trajectories, combined with 3D printing pre-forming technology, achieving "visualized control" of fiber distribution on complex curved surfaces.

Multi-Dimensional Optimization Strategies: Full-Chain Innovation from Material Mix to Intelligent Forming

Fiber orientation optimization must run through the entire process of design, production, and construction. At the material level, Qinglong Group's specially developed steel fibers exhibit excellent interfacial bonding with the UHPC matrix, and customized fibers with an aspect ratio of 1:20 can form a uniform suspension system during mixing; in forming technology, a combination of vacuum-assisted casting and centrifugal molding enables fibers to align along the principal stress direction at curvature changes, increasing flexural strength by 25% compared to traditional processes. To address the challenge of deformation during demolding of double-curved components, Qinglong achieved a technological leap from "empirical control" to "digital twin" through parametric mold design and a fiber orientation monitoring system; in a double-curved sunshade project for a commercial complex, the fiber orientation pass rate reached 98%, with installation precision error controlled within ±2mm.

Qinglong's Full-Chain Advantage: Taking Double-Curved UHPC from Blueprint to Flawless Realization

As a National High-Tech Enterprise and participant in UHPC industry standard development, Qinglong Group provides expert-level solutions for double-curved UHPC projects through its full-chain capabilities of "design-production-installation-maintenance." Backed by an annual production capacity of 600,000 square meters at its Nanning, Guangxi production base, and equipped with advanced tools such as fiber distribution detectors and 3D scanning positioning equipment, Qinglong delivers integrated services from material R&D and custom mold making to on-site installation. In the translucent concrete project at Century Plaza on Nanjing East Road, Qinglong met the light transmittance requirements (≥85%) of the double-curved form through coordinated design of fiber orientation optimization and translucent aggregate mix proportions, while also ensuring structural load-bearing capacity, winning the Silver Award at the First UHPC Construction Engineering Innovation Awards.

Fiber orientation optimization for double-curved UHPC is the balance point between material performance, structural safety, and architectural aesthetics. With 28 years of industry expertise, Qinglong Group integrates technological innovation into every detail, from millimeter-level fiber arrangement to ten-thousand-ton project delivery, consistently fulfilling its commitment to "meticulous craftsmanship and relentless excellence." In the future, as intelligent construction technology develops, fiber orientation control will advance toward greater precision and efficiency, and Qinglong will continue to leverage its full-chain advantages to create UHPC masterpieces for designers and owners that combine artistic expression with engineering reliability.