Precision Control of Multi-Curved UHPC Shape Splicing: Technical Solutions and Practical Experience

Multi-curved UHPC shapes feature complex surfaces and variable spatial forms, making joint precision control key to project quality. Qinglong Group, with 28 years of UHPC/GRC/GRG/GRP construction experience, has developed a complete multi-curved surface joint precision control solution through technological innovation and project practice.

#Digital Modeling and Block Optimization: Front-End Guarantee for Joint Precision The joint precision of multi-curved UHPC shapes begins with block optimization at the digital modeling stage. Qinglong Group uses BIM technology and parametric design to build an overall 3D model of multi-curved surfaces, dividing them into blocks scientifically based on production, transportation, and construction conditions. During block division, each joint face is ensured to be a regular curved surface or flat plane to reduce jointing difficulty; reasonable joint gaps (typically 5-10mm) are reserved for adjusting errors and filling sealant; joint positioning datum points are preset in the model, with each component's positioning error kept within ±1mm. For the hyperbolic UHPC exterior wall panels of the Guangxi New Media Center, no two panels are identical. Through digital modeling and block optimization, Qinglong set precise jointing datums for each component, laying the foundation for on-site joint precision.

#Component Production Precision Control: The Foundation of Jointing Component production precision is the core foundation of joint precision. Qinglong Group strictly controls the production precision of multi-curved UHPC components, with the dimensional error of each component kept within ±1mm and surface curvature error not exceeding ±0.5mm/m. Components are made with high-precision molds, with mold precision errors controlled within ±0.3mm; during production, 3D laser scanning is used to check component dimensions and surface shapes, and production parameters are adjusted promptly; before leaving the factory, each component is numbered and subjected to pre-assembly simulation to ensure joint compatibility between components. For the multi-curved UHPC sculpture project of the Shanghai Astronomy Museum, all components underwent pre-assembly inspection before leaving the factory, and any component with a joint error exceeding 1mm was fully reworked to ensure on-site joint precision.

#On-Site Installation Positioning Technology: The Core Means of Precise Jointing On-site installation positioning technology is key to multi-curved surface joint precision control. Qinglong Group uses 3D laser scanning positioning technology to capture the spatial coordinates of the installation site in real time, compare them with the digital model, and precisely adjust component positions; precision instruments such as total stations and levels are used to monitor the 3D spatial positions of components in real time, with adjustments made immediately once errors exceed 0.5mm; modular installation techniques and dedicated positioning fixtures are used to fix component positions, ensuring no displacement of components during jointing. For the multi-curved UHPC curtain wall project of the Shenzhen Pingshan High-tech Zone Comprehensive Service Center, 3D laser positioning technology kept joint errors within ±1mm, achieving smooth surface transitions.

#Joint Node Treatment: Dual Guarantee of Precision and Function Joint node treatment must ensure precision while meeting functional requirements such as waterproofing and thermal insulation. Qinglong Group adopts a "positioning pin + sealant" solution at joint nodes: positioning pins ensure precise alignment of component joints, while sealant fills the joint gaps, guaranteeing joint precision while achieving waterproof sealing; for complex curved surface joints, elastic connection nodes are adopted with a certain displacement reserved to accommodate deformation caused by temperature changes while maintaining joint precision. For the multi-curved UHPC curtain wall project of Poly Peninsula No. 1 in Hainan, optimized joint node design achieved precise jointing of hyperbolic shapes while effectively preventing leakage.

Precision control of multi-curved UHPC shape jointing must run through the entire process of digital modeling, component production, on-site installation, and node treatment. With 28 years of technical accumulation and professional construction capabilities, Qinglong Group has achieved perfect jointing of multi-curved shapes through precise design, precision manufacturing, and meticulous construction. Only by choosing a professional UHPC manufacturer can you ensure the joint precision of multi-curved shapes and overall project quality.