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

The artistic expression and technological innovation of building envelopes often lie hidden in the ingenious combination of materials. When the strength-and-flexibility of Ultra-High Performance Concrete (UHPC) meets the lightness and transparency of glass curtain walls, how can the two materials work together to achieve a 1+1>2 effect? As an industry player with 28 years of deep expertise in the UHPC/GRC/GRG/GRP materials field, Qinglong will analyze the core points of this combined application from the perspectives of technical logic and engineering practice.

I. Material Property Synergy: Performance Complementarity Strategy of UHPC and Glass Curtain Walls

With its ultra-high strength (compressive strength ≥150MPa), excellent durability, and design freedom, UHPC serves as an ideal supporting structure for curtain wall systems, while glass curtain walls excel in light transmittance and modern aesthetics. The key to combining the two lies in performance matching: UHPC components require structural calculations to optimize cross-sectional dimensions, meeting the load transfer requirements of the glass curtain wall while controlling self-weight (usually ≤25kN/m²) to avoid imposing additional burden on the main structure. For example, in a commercial complex project, Qinglong used precast UHPC ribbed panels as lateral supports for the glass curtain wall, achieving deflection control over a large span (6.5m single span) through fiber content adjustment (2% steel fiber volume ratio) and prestressing design, while leveraging the interplay of light and shadow between UHPC surface textures and glass to create a richly layered facade effect.

II. Connection Joint Design: Detail Control from Mechanical Safety to Waterproof Sealing

Joint treatment is a technical challenge in combined curtain walls. In its detailed design, Qinglong follows the principle of "flexible connection + rigid restraint": UHPC components are connected to glass frames via stainless steel embedded parts, with a reserved 5-8mm displacement gap to accommodate thermal deformation; the joints adopt a dual sealing system—EPDM rubber strips on the inner side for structural sealing and weather-resistant silicone sealant on the outer side—combined with hydrophobic treatment of the UHPC surface (water absorption ≤4%) to ensure water tightness. In a landmark project, for the junction between curved UHPC surfaces and curved glass, Qinglong used BIM parametric modeling to control errors within ±2mm, achieving a "seamless dialogue" between the two materials.

III. Whole-Process Control: Integrated Solutions from Detailed Design to Construction and Installation

As a UHPC/GRC manufacturer integrating detailed design, manufacturing, and construction installation, Qinglong emphasizes full-chain collaboration: at the design stage, Rhino+Grasshopper is used for parametric panelization to optimize UHPC mold design (using a steel mold + elastic liner process to ensure surface precision ≤0.5mm/m); in production, automated material distribution and steam curing (48 hours at 90°C) ensure that components meet strength requirements; on-site installation uses 3D laser scanning for positioning, combined with modular hoisting (a single UHPC component can weigh up to 1.2 tons), improving efficiency by 30% compared to traditional methods. This closed-loop "design-production-construction" management has proven its reliability in hundreds of projects nationwide, including strategic cooperation projects with real estate groups such as Poly and China Overseas.

IV. Sustainability and Cost Optimization: Balancing Green Technology and Economic Value

The combination of UHPC and glass curtain walls is not a simple stacking of materials, but a practice of green building concepts. UHPC's high durability (design service life ≥50 years) reduces later maintenance costs, and its industrial solid waste content (up to 20%) meets low-carbon requirements; the combination of low-E glass and UHPC shading components can reduce building energy consumption by 15%-20%. Through material recycling (mold turnover ≥50 times) and standardized production, Qinglong keeps UHPC component costs within a reasonable range, making this high-end combination economically viable for commercial projects.

From the translucent concrete curtain wall at Century Plaza on Nanjing East Road to the GRC-UHPC composite skin of the Dongguan Women and Children's Activity Center, Qinglong has always driven the evolution of building envelopes through technological innovation. The combination of UHPC and glass curtain walls is not only a fusion of material aesthetics, but also a crystallization of engineering wisdom—only by deeply coupling structural safety, construction precision, and design creativity can architecture truly become an art that transcends time.