Analysis of the Parametric Design Process and Key Technologies for GRC Special-Shaped Forms

Driven by the dual forces of contemporary architectural aesthetics and engineering technology, freeform shapes have become the core language through which landmark buildings express their unique character. GRC (Glass Fiber Reinforced Concrete), with its lightweight high strength and high degree of design freedom, has become the ideal material for realizing complex architectural forms. The introduction of parametric design technology has further enabled a qualitative leap in the entire process of GRC freeform shapes, from creative concept to engineering implementation. As an industry leader with 28 years of experience in deepened design and engineering of UHPC/GRC/GRG/GRP materials, Qinglong Group will analyze the process and key technologies of parametric design for GRC freeform shapes from the dual perspectives of technical logic and engineering practice.

The Core Logic and Process Framework of Parametric Design for GRC Freeform Shapes

Parametric design is not merely a software operation; it is a digital bridge built between architectural form and engineering performance. Its core process consists of four key stages: first, the geometric deconstruction of GRC freeform shapes, using tools such as Rhino and Grasshopper to transform designers' abstract concepts into quantifiable parametric models; second, coupled analysis of material performance and structural mechanics, applying topology optimization to the shape based on the physical property of GRC materials with flexural strength exceeding 20MPa; next, reverse derivation of production process parameters, adjusting the digital model according to mold machining precision (e.g., minimum curvature radius ≤300mm); and finally, full-process coordination of design, production, and installation through BIM technology. This process was verified in the translucent concrete project of the Nanjing East Road Century Plaza renovation, where the Qinglong team achieved millimeter-level jointing precision of curved components through parametric control.

Three Key Technical Breakthroughs in Realizing Freeform Shapes

In the practice of parametric design, GRC freeform shapes face three major technical challenges: first, the digital representation of complex curved surfaces, which requires NURBS (Non-Uniform Rational B-Spline) technology to build continuous, smooth surface models that ensure the fluidity of the shape; second, parametric matching of material performance, achieving precise control of material properties by building a correlation database between GRC mix ratios (glass fiber content, water-cement ratio) and component stiffness and toughness; third, parametric-driven mold machining, using CNC engraving technology to directly convert digital models into mold machining paths, making the mass production of complex shapes possible. In the Dongguan Women and Children's Activity Center project, Qinglong Group, through its independently developed parametric mold system, successfully achieved efficient production of double-curved GRC curtain wall panels, improving work efficiency by 40% compared with traditional processes.

Coordination and Optimization Strategies in Engineering Implementation

The value of parametric design lies not only in form generation, but also in coordinated optimization across the entire industry chain. As a national high-tech enterprise integrating deepened design, manufacturing, and construction installation, Qinglong Group has built a closed-loop system of 'digital design – intelligent production – precise installation': in the design stage, real-time linkage between parametric models and structural calculation software is used to avoid construction risks in advance; in the production stage, an automated batching system ensures the uniformity of GRC materials; in the installation stage, 3D laser scanning positioning technology achieves 'zero-error' jointing of freeform components. This full-process coordination capability enabled Qinglong, in a commercial complex project in Guangzhou, to control the installation precision of more than 5,000 freeform GRC components within ±2mm, meeting the architect's exacting requirement for surface continuity.

Parametric technology is reshaping the design boundaries of GRC freeform shapes, while the deep integration of material performance, digital tools, and engineering experience is the key to balancing architectural aesthetics and structural safety. Qinglong Group's 28 years of technical accumulation is reflected not only in its participation in the formulation of industry standards such as the Technical Standard for Building Application of Glass Fiber Reinforced Cement (GRC) (JGJ/T 423-2018), but also in the full-chain solutions from concept to implementation built through 1,000+ project practices. In the future, with the development of AI-driven parametric design and 3D printing technology, GRC freeform shapes will shine with unique charm in more landmark buildings, and Qinglong will continue its mission of 'Creating Aesthetic Architecture' to drive innovative breakthroughs in new architectural decorative material technologies.