Analysis and Application of Connection Methods Between GRC Curtain Wall and Main Structure

As the "outer garment" of modern architecture, a building curtain wall's connection nodes with the main structure not only affect the aesthetic presentation of the building but also directly impact structural safety and service life. GRC curtain walls, with their advantages of light weight, high strength, and flexible shaping, are widely used in high-end buildings, and the scientific design of connection methods is the core guarantee for their performance. As an industry leader with 28 years of deep expertise in the UHPC/GRC/GRG/GRP materials field, Qinglong Group has accumulated rich experience in connection system innovation and engineering practice through full-chain technical accumulation.

Technical Analysis of GRC Curtain Wall Connection Methods: From Load Transfer to Safety Redundancy

The connection between GRC curtain walls and the main structure must simultaneously meet three core requirements: load bearing, seismic resistance, and displacement compensation. Currently, mainstream connection methods can be divided into two categories: rigid connections and flexible connections. Rigid connections are directly fixed via embedded parts and steel structural supports, suitable for low-rise buildings with stable loads; Qinglong adopted this solution in the Dongguan Women and Children's Activity Center project, achieving precise alignment between GRC components and the concrete main structure. Flexible connections, on the other hand, absorb thermal deformation and seismic loads through components such as elastic gaskets and sliding supports. In the Century Plaza renovation project on Nanjing East Road, the Qinglong team innovatively applied three-dimensionally adjustable connection nodes, keeping the translucent GRC curtain wall structurally stable even in environments with temperature differences of ±50℃.

The material selection for connection nodes is equally critical. The special stainless steel connectors developed by Qinglong have a tensile strength of over 500MPa; combined with basalt fiber-reinforced GRC panels, they form a mechanical system of "overcoming rigidity with flexibility." In the Nanning ASEAN Culture and Art Center project, this combined solution successfully and safely fixed double-curved GRC curtain wall panels each weighing up to 800kg. Third-party testing confirmed that its wind load resistance reached 1.5kPa, far exceeding national standard requirements.

Full-Chain Empowerment: A Technical Closed Loop from Detailed Design to Project Delivery

As a National High-Tech Enterprise, Qinglong has built an integrated "design-production-installation" solution. In the detailed design phase, the team applies BIM technology for parametric modeling of connection nodes, simulating stress distribution under different working conditions in advance; the production process employs automated molding technology to ensure embedded part positioning errors of ≤2mm; during construction and installation, millimeter-level precision calibration is achieved through three-dimensional laser scanning. This full-process control capability enabled the GRC curtain wall project undertaken by Qinglong for Terminal 3 of Guangzhou Baiyun International Airport to achieve zero accidents and zero rework in the installation of 30,000㎡ of components.

For complex building forms, Qinglong has innovatively developed a "point-supported + unitized" composite connection system. In the King Saud University Library project in Saudi Arabia, this system organically integrates GRC curtain walls with UHPC sunshades, achieving ±15° angle adjustment through concealed hinge connections, which not only meets the dynamic aesthetic requirements of the building facade but also ensures structural safety in extreme wind and sand environments.

Industry Trends and Qinglong's Practice: The Way of Balancing Safety and Aesthetics

As building skin design grows more complex, GRC curtain wall connection technology is developing toward lightweight, modular, and intelligent directions. The Technical Standard for Building Application of Glass Fiber Reinforced Cement (GRC) (JGJ/T423-2018), which Qinglong participated in formulating, clearly stipulates that the design life of connection nodes shall be no less than 50 years and proposes a "graded seismic resistance" design concept. In the Zhuhai Hengqin International Financial Center project, the team optimized connection nodes through finite element analysis, keeping the GRC curtain wall structurally intact even under a seismic fortification intensity of 8 degrees.

From domestic landmarks to overseas projects, Qinglong's 28 years of technical accumulation prove that the connection system of GRC curtain walls is not only the "lifeline" of structural safety but also a technical bridge for realizing architectural artistic expression. In the future, with the development of UHPC and GRC composite materials, Qinglong will continue to drive innovation in connection technology, providing designers with broader creative space and creating building skin systems that combine safety and aesthetics for owners.