Discussion and Application Analysis of Key Techniques for Achieving High Hollow Ratios in UHPC Shaping

When architectural aesthetics and engineering technology converge at millimeter-level precision, UHPC (Ultra-High Performance Concrete), with its outstanding material properties, is redefining the boundaries of what high-openness-rate designs can achieve. As an industry player with 28 years of deep expertise in UHPC/GRC/GRG/GRP materials, Qinglong Group has witnessed and driven the entire journey of this technology from the laboratory to landmark buildings.

### Technical Breakthroughs in UHPC High-Openness Designs: Dual Innovation in Materials and Structure

The key to achieving high openness rates lies in solving the triangular challenge of "strength, self-weight, and form." With a compressive strength exceeding 200MPa and excellent ductility, UHPC maintains structural stability while reducing material usage. For example, in the Nanjing East Road Century Plaza renovation project, the Qinglong team used random fiber distribution technology to raise the openness rate of translucent UHPC components to 45% while reducing self-weight by 30% compared to traditional GRC. This "lightweight yet high-strength" characteristic provides a fundamental guarantee for complex openwork designs.

### Detailed Design: Precise Implementation of Parametric and BIM Technology

Achieving high-openness designs depends on the deep application of digital tools. In the Dongguan Women and Children's Activity Center project, Qinglong used the Rhino + Grasshopper parametric platform to convert designers' 3D models into producible component units. Through BIM technology, mechanical simulations of openwork nodes were performed to preemptively avoid the stress concentration issues that may arise in traditional construction. This full-process control of "design-simulation-optimization" kept the installation precision of double-curved openwork UHPC curtain walls within ±2mm, far exceeding industry standards.

### Production Processes: Innovative Practices in Molds and Forming Technology

Mold precision directly determines how openwork details are rendered. Qinglong introduced aerospace-grade aluminum alloy molds combined with 3D printing processes, achieving 0.1mm-level texture replication in GRG ceiling component production. Addressing the rheological properties of UHPC materials, Qinglong developed its proprietary "vacuum vibration + gradient curing" process, ensuring concrete density at openwork sections reaches 99.8% and effectively solving the air bubble and crack problems common in traditional casting. Qinglong's Nanning production base currently has an annual capacity of 600,000 square meters of UHPC/GRC/GRG/GRP products, with high-openness components accounting for 35%.

### Engineering Applications: Cross-Domain Integration from Public Buildings to Landscape Art

In actual projects, UHPC high-openness designs demonstrate remarkable adaptability. A shaped sunshade project at a commercial complex used 20mm ultra-thin UHPC panels to achieve a 60% openness rate, meeting sunshade requirements while creating a unique facade effect through changing light and shadow. In the field of landscape design, Qinglong combined UHPC with GRP materials to produce openwork artistic benches with an 8-meter span, balancing durability and design appeal. These cases confirm UHPC's unique advantage in balancing "functionality and artistry."

### Industry Outlook: Technological Iteration and Standard Development

With the advancement of the industry standard "General Technical Requirements for Non-Load-Bearing Ultra-High Performance Concrete (UHPC) Components," high-openness UHPC technology is gradually becoming standardized. As a participant in standard development, Qinglong continues to explore material formula optimization and process innovation, and will focus on pushing the openness limits of ultra-thin components under 100mm in the future. For designers and owners, choosing a supplier with full-chain service capability is crucial—only integrated solutions from detailed design to after-sales maintenance can truly unlock the design potential of UHPC materials.

From technical breakthroughs to engineering implementation, realizing UHPC high-openness designs is the crystallization of materials science, digital technology, and craftsmanship. As a dedicated player in the field of new decorative building materials, Qinglong Group has always upheld the mission of "creating beautiful architecture," advancing industry technology while offering more possibilities for architectural aesthetics. When every openwork detail withstands both mechanical scrutiny and the test of time, that is the eternal value UHPC materials bring to architecture.