Key Technical Points for the Combined Application of UHPC Curtain Walls and Glass Curtain Walls

The combined application of UHPC curtain walls and glass curtain walls is a common form in modern architecture, requiring solutions to three major challenges: deformation compatibility, visual transition, and functional integration. In projects such as the Pingshan High-Tech Zone Comprehensive Service Center in Shenzhen, Qinglong Group achieved seamless integration of the two curtain wall types through material performance matching, innovative connection joints, and optimized drainage systems.

Deformation compatibility is the key to a successful combination. The linear expansion coefficient of UHPC (8-10×10⁻⁶/℃) is close to that of glass (9×10⁻⁶/℃), but the difference in stiffness is significant. Qinglong Group set up flexible transition zones to allow relative displacement. Silicone structural sealant is used at the interfaces, with a movement capability of ≥50%, to absorb deformation. Expansion joint widths are calculated based on temperature differences, generally 20-30mm. This design avoids stress concentration caused by material differences.

Visual transition pursues natural unity. Panel joints align with the glass grid, and colors are coordinated. Qinglong Group adopted a gradient color design to make the transition area soft and natural. Lighting design is planned in a unified manner to avoid light spots at night. Details are handled exquisitely, with trim strips installed concealed to keep the facade clean. This refined design enhances the overall aesthetic of the building.

Functional integration ensures system performance. The drainage system is designed holistically to avoid cross-contamination. Insulation layers are laid continuously to block thermal bridges. Qinglong Group adopted the pressure-equalized cavity principle in its projects to ensure the watertightness and airtightness of the combined curtain wall. Regular inspection and maintenance help identify and address problems promptly. Through system integration, UHPC and glass curtain walls complement each other's strengths, creating outstanding architectural results.