Analysis of Key Technologies and Design Points for Combined Application of UHPC Curtain Walls and Glass Curtain Walls

In contemporary architectural design, the combined application of UHPC curtain walls and glass curtain walls is becoming an innovative choice for shaping city skylines. This building envelope system, blending rigidity with flexibility, retains the lightness and transparency of glass curtain walls while leveraging the ultra-high strength and design freedom of UHPC materials to give buildings richer spatial expression. As an industry leader with 28 years of dedicated expertise in the UHPC/GRC/GRG/GRP materials field, Qinglong Group will analyze the key technologies and design points of this combined application from three dimensions: material properties, structural synergy, and construction techniques.

I. Material Property Synergy: The Technology Path of Functional Complementarity Between UHPC and Glass

UHPC (Ultra-High Performance Concrete), with its compressive strength exceeding 150MPa and elastic modulus reaching 40GPa, forms a golden partnership with glass curtain walls as a “rigid skeleton + flexible skin.” In a commercial complex project in Shenzhen, the Qinglong team combined precast UHPC sunshade louvers with Low-E glass, relying on UHPC's high durability to resist typhoon loads while using its surface texture and the glass's reflective properties to create light and shadow interplay. The design must pay special attention to matching the thermal expansion coefficients of the materials — UHPC's linear expansion coefficient is approximately 10×10⁻⁶/℃, so elastic connection joints are required to eliminate the thermal stress difference with glass (expansion coefficient 9×10⁻⁶/℃) and prevent structural cracking in the curtain wall system.

II. Structural System Design: Comprehensive Considerations from Load Transfer to Seismic Safety

The structural design of combined curtain walls must address three core issues: first, the lightweight design of UHPC components — by optimizing the reinforcement ratio (typically controlled at 2%-3%) and hollow-core structures, Qinglong keeps the self-weight of UHPC cladding panels within 150kg/㎡, just 1/3 that of traditional stone curtain walls; second, the seismic performance of connection joints — three-dimensionally adjustable stainless steel connectors achieve ±30mm displacement compensation, meeting the requirements of seismic fortification intensity 9; third, the wind pressure resistance of glass curtain walls — the design of UHPC support frames requires wind vibration coefficient verification to ensure that the maximum deflection under force-12 typhoon loads does not exceed L/250 (L is the span). In an airport terminal project, Qinglong innovatively adopted a UHPC honeycomb support structure, improving the glass curtain wall's wind pressure resistance by 40% while reducing overall cost by 15%.

III. Construction Technique Innovation: Practical Solutions for Digital Construction and Precision Control

The construction precision of combined curtain walls directly determines the final result. Drawing on the technical expertise of its national-level R&D center, Qinglong has established a full-process digital system of “BIM parametric design - robotic precasting - 3D scanning installation”: in the detailed design phase, the Rhino+Grasshopper platform is used to complete parametric modeling of UHPC components, ensuring seamless integration with glass panels; in production, automated casting equipment keeps component dimensional errors within ±2mm; in the installation phase, 3D laser scanning technology achieves millimeter-level positioning, and combined with custom lifting fixtures, the installation efficiency of a single 8㎡ UHPC component is improved by 50%. This industrialized construction method has proven its reliability in more than 30 landmark projects across China, including the Nanjing East Road Century Plaza renovation project, winner of the AALBORG WHITE Cup UHPC Construction Engineering Innovation Award.

As a national “Specialized, Refined, Distinctive, and Innovative” enterprise and a participant in industry standard-setting, Qinglong Group has always upheld the mission of “creating beautiful architecture.” In the combined application of UHPC and glass curtain walls, it upholds the rigor of materials science while unleashing the unlimited possibilities of architectural aesthetics. In the future, as green building and intelligent construction develop, this combined system will show even greater potential in areas such as energy conservation (reducing air conditioning loads by 30% through UHPC shading components) and intelligent integration (embedded sensors enabling health monitoring). Choosing an experienced UHPC manufacturer is not only a guarantee of technical solutions, but also an investment in the full life-cycle value of a project.