Large-Span GRC Shaped Structure Stability Technology: Qinglong Full-Chain Solution Safeguards Super-Large Projects

The frontier of span breakthrough lies in the synergy between structural design and material performance. Large-span GRC shapes are widely used in large buildings such as convention and exhibition centers and stadiums, and their structural stability directly affects project safety and service life. As Vice Chairman Unit of the China GRC Association, Qinglong Group has developed a mature large-span GRC stability assurance system through projects such as the 120,000 m² roof of Hainan International Convention and Exhibition Center and the 30,000 m² curtain wall of the Shenzhen Pingshan High-Tech Zone Comprehensive Service Center.

#Structural System Optimization: Balancing Lightweight Design and Load-Bearing Capacity The core of large-span GRC shapes is to improve load-bearing capacity while controlling self-weight. Qinglong Group adopts a composite structural system of "GRC panels + light steel keels", with GRC panels featuring a 15-25mm thin-wall design paired with high-strength light steel keels, resulting in an overall self-weight of only 1/4 that of traditional stone. Through structural mechanics simulation using BIM software to optimize keel spacing and cross-sectional dimensions, the bidirectional bending-twist roof structure project at Hainan International Convention and Exhibition Center achieved structural stability and smooth shaping across large spans.

#Material Performance Upgrade: Customized High-Strength Formulations Material performance is the foundation of large-span GRC stability. Relying on its provincial engineering technology center, Qinglong has developed customized high-strength GRC formulations, using rapid-hardening sulphoaluminate cement of grade 42.5 or above combined with alkali-resistant glass fiber and quartz sand aggregates. Products achieve a flexural strength of up to 25MPa and a compressive strength exceeding 60MPa. In addition, polypropylene fibers are added to improve material toughness, effectively resisting the deformation stress of large-span structures and ensuring stable long-term performance.

#Installation and Monitoring: Full-Cycle Safety Control Installation and later-stage monitoring of large-span GRC are equally critical. Qinglong's team employs modular installation techniques, using prefabricated assembly to reduce on-site work and improve installation precision. In the Shenzhen Pingshan High-Tech Zone project, high-altitude sliding installation technology was adopted, together with a real-time stress monitoring system to dynamically adjust stress states during installation. After project completion, a regular maintenance mechanism was established, with professional equipment used to detect structural deformation, ensuring long-term safety in use.

The structural stability of large-span GRC shapes is the culmination of technological innovation and engineering experience. With full-chain service capabilities—from design optimization and material R&D to installation and monitoring—Qinglong Group provides professional assurance at every stage. With its authoritative strength in participating in the formulation of national industry standards, Qinglong has become the designated supplier for numerous large public construction projects, and will continue to empower projects with technology, promoting the application of large-span GRC shapes in more high-end projects.