Discussion on Key Technologies for Achieving High Hollow-Out Ratios in UHPC Shaping

When architecture engages light and shadow through the art of openwork, UHPC is redefining the boundaries of spatial aesthetics through a material revolution.

In the field of contemporary architectural design, high-perforation-rate forms have become an important hallmark of artistic expressiveness and technical capability. From the curved curtain walls of grand theaters to the parametric skins of commercial complexes, UHPC (Ultra-High Performance Concrete), with its outstanding mechanical performance and forming freedom, is gradually replacing traditional materials as the preferred solution for complex openwork designs. As an industry leader with 28 years of dedication to the UHPC/GRC/GRG/GRP materials field, Qinglong Group has accumulated systematic solutions for achieving high-perforation-rate forms through full-chain technological innovation.

I. Material Performance Breakthroughs in UHPC High-Perforation Forms

The key to achieving a high perforation rate lies in the material's own structural load-bearing capacity and forming precision. With a compressive strength above 200MPa and excellent toughness, UHPC breaks through the application limitations of traditional concrete in thin-walled components. By incorporating ultra-fine silica fume and steel fibers, Qinglong Group enables UHPC materials to maintain structural stability even at a perforation rate of 60%, delivering over 30% higher flexural strength than GRC materials. In the Dongguan Women and Children's Activity Center project, the Qinglong team used a proprietary UHPC formulation to successfully create openwork sunshades only 30mm thick, achieving a perfect balance between light transmittance and structural safety.

II. Synergistic Technologies of Digital Design and Precision Manufacturing

Achieving high-perforation forms is inseparable from the deep integration of parametric design and intelligent manufacturing. Qinglong Group uses the Rhino+Grasshopper parametric platform to transform architects' artistic concepts into producible digital models, and realizes full-process visualization from design to construction through BIM technology. In the Nanjing East Road Century Plaza renovation project, for light-transmitting concrete openwork components, the team adopted 3D-printed molds and CNC engraving technology, controlling the machining precision of openwork textures within ±0.5mm and perfectly reproducing the fluid curves in the design drawings. This digital production model improves production efficiency by 40% compared to traditional processes while reducing material waste by 25%.

III. Innovative Practices in Joint Construction and Installation Techniques

The connection stability of openwork components is a key challenge in project implementation. The “Invisible Anchoring System” developed by Qinglong Group forms a rigid-flexible combined load-bearing system through embedded stainless steel connectors and the structural body. In a commercial complex project in Guangzhou, it successfully solved the wind-induced vibration problem of an 8-meter-span UHPC openwork cantilevered eave. Meanwhile, the team innovatively adopted 3D laser scanning positioning technology, controlling on-site installation errors within 2mm to ensure precise assembly of openwork units. This full-process quality control system has enabled Qinglong's UHPC projects to achieve a 100% first-pass acceptance rate.

From material R&D to engineering practice, breakthroughs in UHPC high-perforation form technology require enterprises with full-industry-chain integration capabilities. As a National High-Tech Enterprise, Qinglong Group has a provincial-level engineering technology center and 58 patented technologies, and has participated in formulating multiple industry standards, including the “General Technical Conditions for Non-Load-Bearing Components of Ultra-High Performance Concrete (UHPC).” In the future, with the deep development of green building and digital construction, UHPC will shine in more landmark projects, and Qinglong will continue to pursue its mission of “creating beautiful architecture,” driving technological innovation and aesthetic upgrades in architectural decoration materials.