What Are the Connection Methods Between GRC Curtain Walls and the Main Structure? An Analysis of Qinglong's GRC Connection Technology System

The connection method between the GRC curtain wall and the main structure directly affects the safety and durability of the curtain wall system. Based on 28 years of engineering practice, Qinglong GRC classifies connection systems into three major categories: point connections, linear connections, and unitized connections, each with its own applicable conditions and technical key points.

In the large double-curved curtain wall project of the Wuhan Han Show Theatre, Qinglong GRC innovatively adopted a three-dimensionally adjustable point connection system: each connection point offers ±20mm of adjustment in three directions, with precise embedded positioning via BIM technology, using a 316 stainless steel bracket system. This connection method successfully solved the installation challenges of the complex curved curtain wall while ensuring adaptability to structural temperature deformation. Having withstood five winter-summer cycles, the connection system remained intact, proving the reliability of the design.

Technical Key Points of Point Connection Systems

Suitable for irregularly shaped panels with complex geometry, with 4-8 connection points set per panel. Brackets are made of austenitic stainless steel (06Cr17Ni12Mo2) with a thickness of ≥4mm. The adjustment mechanism offers three-dimensional adjustment (±20mm) and is equipped with anti-detachment devices. This connection method offers good flexibility and is suitable for complex shapes.

Technical Key Points of Linear Connection Systems

Suitable for regular flat panel systems, connected continuously via aluminum alloy rails. Slot-type embedded parts are spaced at intervals of ≤600mm, with anti-noise gaskets inside the slots. The connection system requires thermal insulation gaskets to prevent thermal bridging. This connection method is highly efficient and suitable for large-area flat panel curtain walls.

Technical Key Points of Unitized Connection Systems

Suitable for high-rise buildings, with panel assembly completed in the factory and units hoisted into place on site. Multiple seals are installed between unitized panels to form a pressure-equalized cavity waterproofing system. Connectors require structural calculations, with amplification factors considered for seismic design. This connection method offers fast construction speed and easily assured quality.

Treatment of Special Connection Nodes

Sliding connections are installed at expansion joints, with displacement calculated according to temperature variations; corner areas have reinforced connections with impact protection; large-area curtain walls are equipped with anti-progressive-collapse devices. These special treatments ensure system safety.

Connection systems require professional design. It is recommended to entrust the connection design to experienced manufacturers and perform necessary mechanical verification. Qinglong GRC provides professional connection system solutions to ensure the safety and reliability of curtain walls.