Digital Technology Achieves Precise Jointing of Double-Curved GRC Panels: Full-Process Control from BIM to Robots

The precise alignment of double-curved GRC panels relies on digital technology spanning the entire process of design, production, and installation. Qinglong Group uses BIM + 3D scanning + robotics to control installation accuracy within ±2mm, achieving "millimeter-level" seamless splicing of tens of thousands of irregularly shaped panels. This digital construction system allows imaginative designs to be perfectly realized.

The design phase uses BIM collaboration. A parametric digital twin model is created to automatically detect clash conflicts between components. Qinglong Group applies algorithms to optimize the segmentation scheme, reducing the number of joints by 20% while placing them in visually weak areas. The 3D coordinates and orientation data of each panel are exported as the benchmark for production and installation. In a technology park project in Shenzhen, virtual pre-assembly identified and corrected 137 design conflicts, avoiding on-site rework.

The production phase uses digital machining. BIM data directly drives CNC machine tools to fabricate molds, ensuring profile accuracy. Each panel is embedded with an RFID chip storing its unique identity information. Qinglong Group can track production progress and quality data in real time by scanning the chips. The installation phase uses total station + AR technology: workers wearing AR glasses can directly see the positions of virtual panels, guiding precise placement.

Digital acceptance safeguards final quality. 3D laser scanning is performed on the completed site, and point cloud data is compared with the BIM model to generate deviation color maps. Qinglong Group's acceptance criteria require 95% of measurement points to deviate within ±3mm, with maximum deviation not exceeding ±5mm. This digital closed-loop management makes the precise construction of complex curved curtain walls possible.