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

As the "outer garment" of modern architecture, building curtain walls depend on connection technology with the main structure that directly affects a building's safety, aesthetics, and durability. GRC curtain walls are widely used in high-end construction thanks to their advantages of light weight, high strength, and flexible shaping, while the design and installation of connection nodes constitute their technical core. Drawing on Qinglong's 28 years of full-chain experience in new building materials such as GRC/UHPC, this article provides an in-depth analysis of the connection methods between GRC curtain walls and main structures along with key application points, offering professional solutions for designers and owners.

Core Classification and Technical Characteristics of GRC Curtain Wall Connection Systems

The connection methods between GRC curtain walls and main structures must balance load transfer, displacement compensation, and installation precision, and are mainly divided into two systems: rigid connection and flexible connection. Rigid connections are directly fixed via embedded parts and steel structure brackets, suitable for curtain wall panels with heavy loads and regular shapes, such as the standardized exterior wall cladding panels of commercial complexes; flexible connections use elastic supports or sliding nodes, which can accommodate building settlement and temperature deformation, making them particularly suitable for curved curtain walls and large-span structures, such as the hyperbolic GRC skin of grand theaters. In the Dongguan Women and Children's Activity Center project, Qinglong innovatively adopted a "rigid skeleton + flexible node" composite connection technology, which not only ensured installation stability at a height of 30 meters but also achieved precise assembly of complex shapes. The project won the Silver Award at the first GRC Construction Engineering Innovation Awards.

Key Technical Points of Connection Node Design

Node design must comprehensively consider material properties and construction feasibility. GRC components weigh only 1/4 of natural stone, but their glass fiber reinforcement characteristics require stress dispersion treatment at connection points, typically using a combination of "embedded steel plates + stainless steel bolts" to avoid cracking caused by local stress concentration. Qinglong's self-developed UHPC/GRC composite connectors, through parametric modeling with BIM technology, keep node errors within ±2mm. In the Nanjing East Road Century Plaza renovation project, seamless integration between translucent concrete and GRC curtain walls was successfully achieved. In addition, anti-corrosion treatment is central to node durability. Qinglong adopts a dual protection process of hot-dip galvanizing plus fluorocarbon spraying, giving connectors a service life of over 50 years, far exceeding industry standards.

Full-Chain Service Ensures the Implementation Quality of Connection Systems

A high-quality connection system depends on full-process control from design to maintenance. As a national high-tech enterprise, Qinglong has established a closed-loop service model of "detailed design - factory prefabrication - on-site installation - intelligent monitoring": in the design phase, Rhino + Grasshopper is used for parametric node optimization; in the production phase, automated molds ensure the positioning accuracy of embedded parts; during installation, 3D laser scanning achieves "millimeter-level" calibration; and in the after-sales phase, IoT technology enables real-time stress monitoring of connection nodes. This full-chain capability enabled the Guangzhou Baiyun International Airport GRG ceiling project undertaken by Qinglong to achieve the safe connection and perfect assembly of tens of thousands of GRG components under a steel structure roof with a 60-meter span, making it a benchmark project in the industry.

From landmark buildings to public welfare projects, GRC curtain wall connection technology has always been the key link between building safety and aesthetic expression. With 28 years of professional expertise and the mission of "creating beautiful architecture," Qinglong deeply integrates material innovation with engineering practice, providing global customers with integrated solutions from conceptual design to long-term maintenance. In the future, with the widespread application of new materials such as UHPC, curtain wall connection technology will develop toward intelligence and green practices. Qinglong will continue to promote the upgrading of industry standards and contribute to the high-quality development of the building decoration industry.