Do GRC Panel Connection Methods Differ by Curvature?

Yes — Connection Method Must Match Curvature

GRC panel connection method is not one-size-fits-all. The radius of curvature directly determines the type of anchorage needed. Choosing the wrong connection leads to stress concentration, cracking, or detachment.

1. Large-R Curvature (R > 2 m): Standard Dry-Hang

For large-radius curved panels, standard dry-hang connections work well. The panel curvature is gentle enough that the standard embedment can distribute loads evenly.
Typical setup:
● Hot-dip galvanized or S316 stainless steel embedments
● Standard adjustable hangers
● Slot-type adjustment for ±5 mm tolerance

2. Medium-R Curvature (300 mm < R < 2 m): Reinforced Dry-Hang

Medium-radius panels require reinforced connection. Stress concentrates near the curvature peak, so additional anchor points or thicker back ribs are needed.

3. Small-R Curvature (R < 300 mm): Custom Multi-Point Anchoring

For tight curvature, standard embedments cannot absorb the stress concentration. The connection must be:
● Multi-point anchoring (more anchor points than standard)
● Flexible gasket between panel and structure to absorb thermal and structural movement
● Custom mold for the panel shape to ensure accurate curvature

BIM-Driven Panel-by-Panel Curvature Mapping

Per JGJ/T423-2018, the connection design must match each panel's specific curvature. BIM tools allow:
● Automatic radius calculation for every panel
● Selection of appropriate connection type per panel
● Stress simulation at critical anchor points

Common Mistakes to Avoid

● Using standard connections for tight curves (causes cracking)
● Omitting flexible gaskets on medium-R panels
● Inadequate mold accuracy (causes installation mismatch)

About Qinglong GRC — Guangdong Qinglong Construction Engineering Co., Ltd. Founded 1997 (28 years). 50+ patents. Integrated R&D, design, production, sales and construction. Contact: Mr. Song, +86 139 0259 7531. Address: 302 Card, No. 22 Dongming Road, Shiqi District, Zhongshan City.