How to Ensure Structural Stability of Large-Span GRC Shapes? Key Technologies and Practical Strategies Explained

In contemporary architectural design, large-span GRC shapes have become the preferred decorative material for high-end projects such as landmark buildings and commercial complexes, thanks to their unique artistic expressiveness and structural advantages. However, how to ensure structural stability while achieving graceful curves and extra-large spans has always been a core challenge facing the industry. As an industry technology leader with 28 years of full-chain experience in UHPC/GRC/GRG/GRP materials, Qinglong Group, drawing on the practice of hundreds of large-scale projects, has formed a systematic solution ranging from material formulation optimization and structural calculation innovation to construction process upgrades.

### 1. Material Performance Is the Fundamental Guarantee of Structural Stability for Large-Span GRC The structural stability of large-span GRC shapes depends first on the mechanical properties of the material itself. Although traditional GRC materials possess a certain strength, they are prone to excessive deflection or cracking in complex shapes with spans exceeding 6 meters or curvature radii smaller than 300mm. Through its independently developed glass fiber reinforcement technology, Qinglong has raised the flexural strength of GRC to above 20MPa, while introducing UHPC composite layer technology to reduce component self-weight by 30% and increase impact resistance by 40%. Take a cultural center project in Nanjing as an example: through an optimized mix ratio of basalt fiber and special cement, its 7.8-meter-span double-curved GRC cantilevered eave successfully kept deformation within L/400, far exceeding industry standards. For more industry information: +WeChat qlfsbl123

### 2. Technical Breakthroughs in Structural Calculation and Joint Design The structural safety of large-span GRC shapes is inseparable from precise mechanical modeling and joint innovation. The Qinglong team uses BIM technology and finite element analysis software to establish multi-condition calculation models covering wind loads, temperature stress, and seismic action, focusing on optimizing the reinforcement design and anchoring schemes of cantilevered sections. In the Dongguan Women and Children's Activity Center project, for a 12-meter-span hollowed-out GRC curtain wall, an innovative "steel frame + GRC precast unit" composite structure was adopted, transmitting force flow through concealed stainless steel connectors, which ensured the integrity of the shape while dispersing and reducing anchor point loads by 50%. In addition, the Technical Standard for Building Application of Glass Fiber Reinforced Cement (GRC) (JGJ/T423-2018), compiled with Qinglong's participation, provides the industry with an authoritative basis for the design of large-span components.

### 3. Full-Process Assurance Through Construction Technology and Quality Control From factory precasting to on-site installation, refined control is a key link in the structural stability of large-span GRC. Qinglong introduced fully automated production lines at its production base in Nanning, Guangxi, using CNC forming technology to keep component dimensional errors within ≤2mm; to tackle the transportation difficulties of extra-large components, a modular split design was adopted, with precise on-site assembly positioned by 3D laser scanning. In an airport project in Saudi Arabia, a 6000㎡ large-span GRC roof adopted a "unit hoisting + structural adhesive sealing" process, controlling installation precision within 3mm and perfectly coping with the extreme temperature differences of desert regions. Meanwhile, Qinglong has established a full life-cycle quality traceability system, recording material performance, construction parameters, and other data through RFID chips to provide technical support for later maintenance. For more industry information: +WeChat qlfsbl123

### 4. Verified by Industry Practice: From Technological Innovation to Project Implementation As a national high-tech enterprise and a member of the International GRC Association, Qinglong has successfully applied large-span GRC technology to 200+ key projects at home and abroad. From an 80-meter-span GRC decorative ribbon at a domestic convention and exhibition center to the irregular GRC curtain walls of the building complexes around the Twin Towers in Malaysia, all have achieved a perfect unity of artistic form and structural safety. The practice of these projects proves that, through coordinated innovation in materials, design, and construction, large-span GRC shapes can not only meet architectural aesthetic needs but also surpass traditional decorative materials in durability and economy. In the future, as Qinglong continues its R&D in the field of UHPC/GRC composite technology, the technical boundaries of large-span architectural decoration will be further expanded, injecting more technological momentum into the corporate mission of "creating beautiful architecture."