GRC Component Load Pocket: The Hidden 'Load-Bearing Core' Key to Structural Stability

The load-bearing pack is the "invisible skeleton" inside GRC components. Though not exposed, it plays a core role in distributing loads and enhancing connection strength. Qinglong Group, with 28 years of experience in GRC detailed design, optimized the load-bearing pack design in complex projects such as the double-curved components of the Guangxi New Media Center, ensuring long-term stable service of the components.

The load-bearing pack of GRC components is typically set at installation joints, corners, and large-span areas, and its design and fabrication quality directly affect the load-bearing capacity of the components. The industry standard that Qinglong participated in formulating specifies the technical requirements for load-bearing packs, providing a normative basis for the industry.

Core Functions: Three Functions to Reinforce Structural Safety

The primary function of the load-bearing pack is to distribute loads, evenly transferring external forces such as the self-weight of GRC components and wind loads to the installation joints, preventing cracking caused by local stress concentration. The second is to enhance connection strength; through built-in steel mesh or steel frames, it improves the connection stability between components and countersunk bolts or hangers. In addition, the load-bearing pack can also improve the overall rigidity of components and reduce deformation risk. In the GRC sculptures over 3 meters tall at the Shanghai Astronomy Museum, Qinglong kept the deformation of components within the allowable range through load-bearing pack optimization.

Design Points: Precise Customization to Match Load Requirements

Load-bearing pack design requires mechanical calculation to determine dimensions and materials based on component weight, span, and installation method. For ordinary components, the load-bearing pack thickness shall be no less than 30mm, with built-in double layers of alkali-resistant glass fiber mesh; heavy components require an additional steel frame, made of Q235B steel and tightly bonded with the GRC substrate. In the GRC special-shaped double-curved panel project of Poly Peninsula No. 1 in Hainan, Qinglong used BIM technology to simulate load conditions and precisely design the position and specifications of the load-bearing packs.

Production Process: Detail Control Ensures Quality

Load-bearing pack fabrication requires high-grade GRC slurry to ensure tight integration with the component body without delamination. The built-in reinforcement materials must be evenly distributed, and the steel mesh protective layer shall be no less than 15mm thick to prevent corrosion from affecting performance. In production, Qinglong uses special molds to position the load-bearing packs, ensures slurry compactness through high-frequency vibration, and conducts load tests before delivery to verify that the load-bearing capacity of the packs meets standards.

The load-bearing pack is the core guarantee of structural safety for GRC components, and its design and fabrication reflect the manufacturer's technical strength. Qinglong has been deeply engaged in the GRC field for 28 years, and with 58 patented technologies and rich project experience, has achieved precision in load-bearing pack design and standardization in production. Only by emphasizing the technical optimization of load-bearing packs can GRC components remain stable over the long term under complex load conditions, providing solid support for building safety.