Sectional Mold Principles and Practical Applications for Complex GRC Shapes

Principles and Practical Applications of Mold Splitting for Complex GRC Shapes

In the field of architectural decoration, GRC (Glass Fiber Reinforced Concrete) has become an ideal material for shaping complex architectural forms thanks to its lightweight, high-strength, and flexible molding characteristics. However, the mold splitting process for complex GRC shapes directly determines product precision and construction efficiency, making it a core step in bringing designs to life. As an industry participant with 28 years of experience in GRC detailed design and production, Qinglong Group has developed a scientific and systematic mold splitting methodology through practice on over a thousand landmark projects, helping designers turn creative ideas into reality.

Core Principles of GRC Mold Splitting Design: The Golden Rule of Balancing Art and Engineering

Mold splitting for complex GRC shapes must follow three major principles: first is structural safety—the splitting interface must avoid stress concentration areas and ensure the self-weight of a single component does not exceed hoisting limits, generally controlled within 50-80kg; second is process feasibility—splitting lines should align with the mold draft direction, avoid undercuts, and take into account the continuity of glass fiber fabric placement; finally is visual integrity—splitting seams must blend with the building texture, with concealed jointing techniques applied at complex areas such as double-curved surfaces. Taking the double-curved curtain wall of a cultural center in Guangzhou as an example, parametric mold splitting divided the 1,200㎡ curved surface into 286 standard units, with jointing errors controlled within 2mm, achieving a perfect unity of design effect and engineering efficiency.

Key Technologies in Mold Splitting Practice: The Transformation Path from Digital Models to Physical Components

In the detailed design stage, parametric models are built using Rhino+Grasshopper, with mold splitting schemes optimized through algorithms. For openwork relief shapes, a "whole first, details second" splitting strategy is adopted, with the main structure and decorative details formed in separate steps; for oversized irregular components, such as a 3.6m-high twisted cornice at an airport terminal, an innovative solution combining horizontal splitting with an embedded steel structural frame was adopted, solving the process challenge of integral forming. In production, Qinglong Group's modular mold system enables over 90% component reuse, reducing mold splitting costs by 30%—a technical advantage fully validated in the Nanning ASEAN Cultural Plaza project.

Quality Control of the Mold Splitting Process: Full-Process Management with Millimeter-Level Precision

Mold splitting quality directly affects installation precision. Qinglong has established a closed-loop control system of "3D scanning—error analysis—mold correction." In the Dongguan Women and Children's Activity Center project, BIM technology was used to simulate the pre-assembly of split components, identifying and adjusting 17 joints with cumulative errors exceeding 5mm in advance. During installation, a 3D positioning system combined with customized connectors achieved docking precision of ±3mm between GRC components and the main structure. This rigorous quality control system is precisely the core competitiveness that enables Qinglong to undertake overseas high-end projects such as Gardens by the Bay in Singapore.

Industry Trends and Innovation Directions: Mold Splitting Technology Expanding the Boundaries of GRC Applications

As building envelope forms become increasingly complex, mold splitting technology is advancing toward intelligent development. The AI-assisted mold splitting system developed by Qinglong can automatically identify model features and generate optimized schemes, shortening the traditional 2-3 day splitting cycle to 8 hours. Meanwhile, combining the material properties of UHPC (Ultra-High Performance Concrete), the "GRC-UHPC composite mold splitting process" was developed, achieving single-step forming of 3.2m-span cantilevered components in a commercial complex project in Shenzhen. These technological innovations not only enhance the ability to realize complex shapes but also open up new paths for GRC applications in super high-rise and large-span buildings.

As the key bridge from GRC design to implementation, the technical level of the mold splitting process directly reflects a company's overall strength. With 28 years of technical accumulation, Qinglong Group has formed a full-chain solution spanning parametric design, modular production, and smart installation. In the future, with the deep integration of technologies such as BIM and AI, the GRC mold splitting process will become even more precise and efficient, offering unlimited possibilities for architectural artistic creation. Choosing a supplier with mature mold splitting technology is an important guarantee for the success of complex GRC projects.