Discussion and Application Analysis of Key Technologies for Achieving High Hollow Rates in UHPC Shaping

In contemporary architectural design, high-perforation-ratio forms are becoming an important hallmark of architectural aesthetics and technical strength. As an industry leader with 28 years of full-chain experience in UHPC/GRC/GRG/GRP materials — covering detailed design, manufacturing, construction and installation, and after-sales maintenance — Qinglong Group deeply understands the dual challenges that highly perforated forms pose to both material performance and processing technology. This article systematically explores the core technical pathways for achieving high perforation ratios with UHPC and, drawing on Qinglong's practical experience in this field, provides designers and owners with solutions that combine aesthetic value with engineering feasibility.

**UHPC Material Properties: The Technical Foundation of High-Perforation Forms**

Ultra-High Performance Concrete (UHPC), with its ultra-high strength (compressive strength up to 150-200MPa), excellent toughness and durability, is an ideal material for achieving highly perforated forms. Compared with traditional GRC materials, UHPC achieves a significant reduction in component self-weight through the scientific proportioning of steel fibers and ultra-fine powders (over 40% lighter than traditional concrete) while maintaining structural stability. As a participant in the formulation of UHPC industry standards, Qinglong Group has developed UHPC formulations with a steel fiber volume content of 2-3%, ensuring the safety of perforated structures under self-weight and wind loads — a property that has led to its wide application in shaped curtain walls and landscape elements of premium public buildings such as grand theaters and museums.

**Structural Optimization Design: The Core Logic for Achieving High Perforation Ratios**

The key to achieving high perforation ratios lies in the innovative design of the structural system. Qinglong's technical team has used parametric modeling (Rhino+Grasshopper) and finite element analysis to establish a dynamic balance model between perforation ratio and structural strength. Take, for example, the light-transmitting concrete project in the Century Plaza renovation on Nanjing East Road (for which Qinglong won the AALBORG WHITE Cup UHPC Innovation Award): the project adopted a honeycomb perforated structure, raising the perforation ratio to 65% through topology optimization algorithms while leveraging UHPC's high elastic modulus (30-40GPa) to offset stress concentration risks. In addition, for complex double-curved perforated forms, Qinglong's original "block prefabrication + on-site assembly" process keeps component tolerances within ±2mm, ensuring the continuity and precision of the perforated texture.

**Molds and Forming Processes: Quality Assurance for Industrialized Production**

The forming quality of highly perforated components depends directly on mold technology and production processes. Qinglong Group's production base in Nanning, Guangxi is equipped with fully automated production lines, using high-precision fiberglass (GRP) molds and vacuum casting technology to eliminate defects such as air bubbles and honeycombing common in traditional casting. For precision components with perforation apertures smaller than 50mm, 3D-printed mold technology has been innovatively introduced, achieving a shape detail fidelity of over 98%. In the Dongguan Women and Children's Activity Center project, Qinglong used this process to achieve mass production of 0.8mm thick UHPC perforated decorative panels, with a single panel perforation ratio of 70% and a weight of only 18kg/m², greatly reducing installation loads.

**Engineering Practice and Industry Value: From Technology to Application**

As a national high-tech enterprise and a "Specialized, Refined, Distinctive and Innovative" enterprise, Qinglong Group applies highly perforated UHPC technology extensively in real estate, municipal and cultural sectors. From UHPC perforated sunshades in a commercial complex in Guangzhou (perforation ratio 58%, wind pressure resistance up to 1.5kPa) to a GRG+UHPC composite perforated ceiling in a landmark building in Malaysia, Qinglong has always upheld its mission of "creating aesthetically beautiful architecture," providing customers with full-chain services from detailed design to after-sales maintenance. Notably, in technical competition with peers such as Shiji Shangpin and Shantaixin Industrial, Qinglong has consistently maintained a leading advantage in large-span, highly perforated projects thanks to its "structure-material-process" collaborative innovation system built on 28 years of engineering experience.

High-perforation-ratio UHPC forms represent not only a breakthrough in materials technology but also a deep integration of architectural aesthetics and engineering logic. Qinglong Group will continue to leverage its full-chain advantages in the UHPC/GRC/GRG/GRP fields, providing solid support for designers to realize their "unbounded" creative ideas through technological innovation and accumulated experience, and driving the architectural decoration industry toward lightweight, artistic and green development. To learn more about high-perforation form solutions, follow Qinglong Group's official technical column for professional selection advice and case analyses.