Analysis of Connection Methods and Key Design Points Between GRC Curtain Walls and the Main Structure

As the "outer garment" of modern architecture, building curtain walls not only carry the responsibility of aesthetic expression, but also directly affect the safety and durability of buildings. GRC curtain walls, with their lightweight yet high-strength properties and flexible shaping capabilities, are widely used in high-end buildings such as grand theaters and commercial complexes, while their connection design with the main structure is the core link ensuring the stability of the curtain wall system. As an industry leader with 28 years of full-chain experience in UHPC/GRC/GRG/GRP materials, Qinglong Group will start from the technical key points and design logic of connection methods to provide professional solutions for designers and owners.

GRC Curtain Wall Connection Systems: From "Rigid-Flexibility Integration" to "Precise Coordination"

The connection between GRC curtain walls and the main structure must balance load transfer and displacement compensation. Common connection methods can be divided into two categories: rigid connections and flexible connections. Rigid connections are directly anchored to the main structure through embedded parts, suitable for scenarios with heavy loads and low displacement requirements, such as standard exterior wall panels of commercial buildings; flexible connections achieve micro-displacement compensation through sliding supports or elastic gaskets, making them particularly suitable for high-rise buildings or buildings in earthquake-prone areas, effectively resolving stresses caused by temperature deformation and structural settlement. Within the annual capacity of 600,000 square meters at Qinglong's Nanning production base, customized embedded part systems have been developed for different connection needs. Its hot-dip galvanizing process extends the anti-corrosion service life to more than 30 years, far exceeding the industry average.

Design Key Points: Deep Integration from Material Properties to Engineering Practice

The design of connection nodes must fully consider the properties of GRC materials and the engineering environment. First, load calculations must precisely match the flexural strength of GRC components (high-quality GRC can reach over 20MPa), with BIM technology used to simulate the stress state under wind loads and seismic loads to avoid cracking risks caused by stress concentration. Second, waterproof sealing design is critical. The double-sealing process adopted by Qinglong, combining EPDM rubber strips with weather-resistant sealant, can effectively prevent rainwater penetration. This technology withstood extreme weather tests in the Century Plaza renovation project on Nanjing East Road. In addition, for special-shaped GRC components, Qinglong achieves precise positioning of connection nodes through parametric design (Rhino+Grasshopper), ensuring that installation errors of complex structures such as double-curved surfaces and hollow-out shapes are controlled within ±2mm.

Full-Chain Service: Quality Assurance from Detailed Design to After-Sales Maintenance

As a National High-Tech Enterprise, Qinglong incorporates connection system design into full-process control: in the detailed design stage, it works with design institutes on node optimization, such as avoiding condensation problems through thermal bridge breaking design when adopting the "GRC + insulation layer" composite construction; in the manufacturing stage, automated production lines ensure that embedded part position deviation is ≤1mm; in the construction and installation stage, 3D laser scanning technology achieves "zero-error" splicing, a technology that helped the Dongguan Women and Children's Activity Center project win the GRC Construction Engineering Innovation Award. In addition, Qinglong has established a comprehensive after-sales maintenance system, conducting regular inspection and maintenance of connection nodes. Its "2-hour response, 24-hour on-site" service standard provides solid assurance for the long-term safety of GRC curtain walls.

From material R&D to project implementation, the connection design between GRC curtain walls and the main structure is a combination of technology and art, and even more a reflection of responsibility and professionalism. Building on 28 years of industry experience, Qinglong Group will continue to drive innovation and upgrading of GRC connection technology, providing the construction industry with safer, more durable, and more aesthetically valuable solutions, practicing its mission of "Creating Beautiful Architecture".