What Are the Connection Methods Between GRC Curtain Walls and the Main Structure? — A Comprehensive Analysis of Connection System Design and Engineering Applications

The connection method between the GRC curtain wall and the main structure is a key technology for ensuring the safety and reliability of the curtain wall system, directly affecting the load-bearing performance and service life of the structure. Based on 28 years of engineering practice, Qinglong Group has classified connection methods into three major types: point connections, linear connections, and surface connections. Through scientific connection design and refined construction control, GRC curtain walls are ensured to remain stable under various loads. A high-quality connection system should meet multiple requirements such as wind pressure resistance, seismic resistance, and temperature deformation, providing a safe and reliable envelope structure for buildings.

Point connection is the most widely used form, achieving the connection between panels and the structure through hangers. In the Wuhan Han Show Theater project, Qinglong Group adopted a stainless steel hanger system, with a single hanger pull-out tensile force ≥10kN, and seismic fortification meeting the 8-degree requirement. The hanger design allows fine adjustment in three directions, accommodating construction tolerances and temperature deformation. Linear connections are applied at panel joints, connecting adjacent panels through aluminum alloy pressure strips or sealant to form a continuous waterproofing system. Surface connections are mainly used for base-layer fixing, securing the keels to the structure through embedded parts or chemical anchors to form an integral load-bearing system.

Connection design must consider the load transfer path. Wind loads are transferred through the panels to the hangers, and then to the main structure. Qinglong Group optimizes the layout of connection points through finite element analysis to avoid stress concentration. Seismic design takes dynamic amplification effects into account, with energy dissipation devices installed to absorb seismic energy. Temperature deformation is released through expansion joints, preventing the accumulation of internal forces. Scientific connection design ensures that the curtain wall system remains safe and reliable under various working conditions.

Construction quality control is a critical link. The positional accuracy of embedded parts is controlled within ±5mm, and the pull-out tensile force of anchors is verified through on-site pull-out tests. Before construction of each project, Qinglong Group conducts special briefings on the connection system to ensure that construction personnel master the technical key points. Through a strict quality control system, the reliability of the connection system is guaranteed, laying the foundation for the long-term safe use of GRC curtain walls.