Design Key Points and Engineering Application Analysis of Connection Joints Between UHPC Curtain Wall Panels and Steel Frame Keels

The design precision of curtain wall connection joints directly determines the safety and artistic quality of a building's skin. In the connection system between UHPC curtain wall panels and steel frame keels, every detail carries the deep integration of material properties and engineering practice. As Qinglong Group, with 28 years of full-chain experience in UHPC/GRC/GRG/GRP, we have drawn on technical expertise accumulated through hundreds of landmark projects to develop a joint design system that balances structural safety, construction efficiency, and aesthetic expression.

**Key Technical Points for Connecting UHPC Curtain Wall Panels to Steel Frame Keels**

The ultra-high strength (compressive strength ≥150MPa) and toughness of UHPC provide greater possibilities for connection joint design. In joint construction, three core issues must be addressed: the rationality of load transfer paths, the compatibility of material deformation, and long-term durability. Through BIM parametric design, Qinglong's technical team breaks the connection joints down into a three-level load-bearing system of "embedded parts - adapters - keel connectors," ensuring that load transfer efficiency per square centimeter of contact area is improved by more than 30%.

**Joint Optimization Strategies in Engineering Practice**

In a commercial complex project in Guangzhou, for a large-span curved UHPC curtain wall, Qinglong innovatively adopted a "floating adapter" design. By placing elastic shims between the stainless steel sleeves pre-embedded in the UHPC panels and the keels, the design effectively absorbs stresses generated by thermal deformation, enabling individual curtain wall panels weighing up to 800kg to achieve ±5mm displacement compensation. Compared with traditional rigid connections, this design solution keeps installation accuracy within ±2mm while reducing subsequent maintenance costs.

**Full-Chain Service Ensures Joint Implementation Quality**

As a national high-tech enterprise integrating detailed design, manufacturing, and construction installation, Qinglong has established a full-process quality control system spanning material formula optimization to on-site installation guidance. At its Nanning production base, automated production lines keep embedded part positioning errors within ≤0.5mm; on construction sites, 3D laser scanning technology is used for real-time accuracy calibration, ensuring uniform and consistent joints across hundreds of curtain wall panels. This closed-loop "design - production - construction" service model has increased joint installation efficiency by 40% and reduced the rework rate to below 0.3%.

From the translucent UHPC curtain wall of Century Plaza on Nanjing East Road to the custom-shaped decorative components beside the Petronas Twin Towers in Kuala Lumpur, Malaysia, Qinglong has always worked with a meticulous, excellence-driven attitude, deeply coupling material properties with engineering requirements. Looking ahead, as UHPC materials find wide application in building skins, innovative connection joint design will become key to enhancing building quality. Building on 28 years of accumulated technical expertise, Qinglong is ready to provide designers and owners with full-cycle solutions from concept to implementation, jointly creating building skin systems that combine safety and aesthetics.