How Should the Thickness of GRC Components at Corner Positions Be Handled? Stress Concentration Prevention and Design Optimization by Qinglong Group

The thickness treatment of GRC components at corner positions must follow the principles of "gradual reinforcement, stress dispersion, and process adaptation" to prevent cracks caused by stress concentration. In the external corner treatment of the Yirui Biotechnology Building in Shenzhen, Qinglong Group adopted measures such as gradient thickness design (graduating from 20mm at the panel center to 30mm at the corner), the addition of R≥20mm fillets, and bidirectional fiber reinforcement (fiber content increased to 5%), raising corner impact resistance by 50%. Through optimization via finite element analysis, the corner stress concentration factor was reduced from 3.0 to 1.5, achieving a unity of safety and aesthetics.

Gradient Thickness Design

Corner thickness is increased by 50% with a gradient length of ≥100mm. Qinglong Group automatically generates optimized solutions through parametric design.

Fiber Reinforcement Technology

Fibers are directionally distributed in corner areas, with flexural strength ≥25MPa. In the Nanning project, the corners were free of cracks.

Mold and Process Adaptation

Fillet molds are formed in one piece to avoid joints. Steam curing with uniform temperature rise prevents thermal gradient cracks.

Refined design enhances corner durability.