GRC Curtain Wall to Main Structure Connection Technology: Mainstream Methods and Safe Selection

The connection method is the “lifeline” of GRC curtain walls, where safety and suitability are both indispensable. The quality of the connection between a GRC curtain wall and the main structure directly determines the wall's stability, safety, and service life. Especially in high-rise and large-span buildings, connection technology becomes a critical link in project safety. As a Qinglong manufacturer with 28 years of full-chain GRC experience, and drawing on thousands of project practices, we explain in detail the mainstream connection methods and the logic behind selecting them.

#Mainstream Connection Methods: Characteristics and Applicable Scenarios There are three mainstream methods for connecting GRC curtain walls to the main structure. First, dry-hanging connection: GRC components are fixed to the steel framework of the main structure using stainless steel hangers, offering flexible installation and removability, suitable for conventional curtain walls of mid-to-high-rise buildings, such as the GRC curtain wall of Shenzhen Longhua Xiangshan Science and Technology Park. Second, embedded connection: connecting parts are pre-embedded during main structure construction, and GRC components are directly docked and fixed during installation, featuring high connection strength and good stability, suitable for large irregular components and heavy-duty GRC curtain walls, such as the large GRC shaped panels of the Wuhan Han Show Theatre. Third, steel framework connection: a steel framework is first erected outside the main structure, and GRC components are then fixed onto it, suitable for curtain walls with complex shapes and scenarios where the distance to the main structure is large, such as the hyperbolic GRC exterior wall of the Guangxi New Media Center.

#Selection Core: Three Principles of Safety and Suitability The selection of connection methods must follow the principles of safety first, scenario suitability, and ease of construction. First, select based on the weight and dimensions of the GRC components: small lightweight components may use dry-hanging connection, while large heavy components require embedded or steel framework connection to ensure the load capacity matches. Second, select based on the building's structural characteristics: concrete main structures suit embedded connection, while steel structures can prioritize dry-hanging or steel framework connection. Finally, consider environmental factors: coastal areas with high salt fog require corrosion-resistant stainless steel connectors, and cold regions need allowance for thermal deformation to prevent damage to connection points from thermal expansion and contraction. In the Sanya Festival Plaza project, Qinglong selected 316 stainless steel connectors to suit the high-humidity environment, ensuring connection durability.

#Qinglong Technology: Safety Upgrades and Practice of the Connection System Qinglong continuously innovates in GRC connection technology to enhance safety performance and suitability. First, it develops customized connectors, designing dedicated connectors according to project requirements, such as adjustable connectors for hyperbolic GRC curtain walls that allow fine adjustment of the installation angle to ensure precise connections. Second, it strengthens anti-corrosion treatment: all connectors undergo hot-dip galvanizing or are made of stainless steel, combined with anti-corrosion coatings to extend service life. Third, it optimizes joint design by adding elastic washers at connection points to absorb vibration and deformation stress and prevent cracking. Through optimized connection joint design, the GRC curtain wall of the Shenzhen Pingshan High-tech Zone Comprehensive Service Center successfully withstood strong wind loads, and the project won the Luban Award.

Connection technology for GRC curtain walls is the core guarantee of safety and performance, and selection must be made scientifically based on project characteristics, component parameters, and environmental conditions. With deep technical expertise, customized connection solutions, and strict quality control, the Qinglong manufacturer provides safe and reliable connection systems for all types of GRC curtain wall projects. Today, as building safety becomes increasingly important, professional connection technology will become the core competitiveness of GRC manufacturers, safeguarding buildings.