How to Precisely Position Embedded Parts in Double-Curved GRC Panels: Key Technologies and Practical Methods

Positioning Determines Success: The Technical Key to Precise Installation of Embedded Parts in Double-Curved GRC Panels

Under the dual demands of architectural envelope aesthetics and structural safety, double-curved GRC panels, with their smooth curved surfaces and material plasticity, have become the core vehicle for landmark buildings to realize design creativity. Embedded parts, serving as the “invisible skeleton” connecting components to the main structure, have a positioning accuracy that directly affects the stability and service life of curtain wall systems. Qinglong Group, with 28 years of full-chain experience in UHPC/GRC/GRG/GRP, has developed a precise positioning solution for embedded parts in double-curved GRC panels through integrated practice in detailed design, manufacturing, and construction installation.

Analysis of Technical Challenges in Positioning Embedded Parts for Double-Curved GRC Panels

The three-dimensional curved surface characteristics of double-curved GRC panels make it difficult for traditional two-dimensional positioning methods to meet precision requirements. In actual engineering, a positioning deviation of embedded parts exceeding 5mm can lead to installation difficulties or stress concentration, which places extremely high demands on parametric modeling during the detailed design stage. The Qinglong team found in the Dongguan Women and Children's Activity Center project that for every 100mm change in the radius of curvature of a double-curved panel, the spatial coordinate deviation of embedded parts must be controlled within ±2mm to ensure smooth alignment in subsequent installation. In addition, GRC material has a shrinkage rate of 0.3%-0.5% during production and curing, which requires embedded part positioning to allow a reasonable compensation margin to avoid potential structural risks later.

Digital Technology Empowers Precise Positioning of Double-Curved GRC Embedded Parts

As an enterprise that participated in drafting the Technical Standard for Building Application of Glass Fiber Reinforced Cement (GRC), Qinglong Group has deeply integrated BIM technology with 3D scanning technology to build a full-process digital positioning system from design to construction. In the detailed design stage, the Rhino+Grasshopper parametric platform is used to establish digital models of double-curved GRC panels, with the spatial coordinates of embedded parts automatically generated through algorithms and clash detection performed against the main structure model. In production, industrial-grade 3D printers are introduced to create 1:1 physical positioning molds, ensuring the positional accuracy of embedded parts during GRC panel casting. In the construction and installation stage, the Leica TS60 total station is used for real-time coordinate verification, combined with point cloud scanning technology to achieve millimeter-level error correction. This technical combination achieved a 100% pass rate for embedded part installation of double-curved translucent concrete components in the Nanjing East Road Century Plaza renovation project.

Full-Chain Quality Control Ensures Accurate Implementation of Positioning

Precise positioning of embedded parts is not an isolated step, but a systematic project running through material selection, production processes, and construction organization. Qinglong Group controls quality at the source by selecting hot-dip galvanized steel plates with a yield strength ≥300MPa as the base material for embedded parts, and achieves production errors ≤1mm through mold standardization. At the Nanning production base in Guangxi, each GRC production line is equipped with dedicated positioning fixtures, using an “in-mold pre-embedding + vacuum adsorption” process to ensure the bond strength between embedded parts and GRC panels is ≥1.5MPa. Before on-site installation, the technical team conducts 3D pre-assembly simulations and develops specialized lifting plans. In a commercial complex project in Shenzhen, through this full-chain control, the positioning error of embedded parts for a 5000㎡ double-curved GRC curtain wall was successfully controlled within 3mm, a 40% improvement over the industry average.

From the double-curved texture of the Guangzhou Opera House to the streamlined roof of Chengdu Tianfu International Airport, double-curved GRC panels are reshaping architectural forms with their unique artistic expressiveness. As key nodes in this process, embedded parts and their positioning technology reflect the deep integration of materials science and engineering practice. With the technical resources of a national-level R&D center and hands-on experience from more than 2,000 projects, Qinglong Group continues to drive technological upgrading in the GRC industry, providing solid technical support for designers to realize their creative visions. In the balancing act between architectural aesthetics and structural safety, precisely positioned embedded parts are not only a reflection of technical details, but also the best testament to a company's professional strength.