Key Points for Load-Bearing Calculation of Suspended GRC Shapes? Structural Safety and Qinglong Group's Mechanical Analysis System

Load-bearing calculations for suspended GRC shapes require comprehensive consideration of four major factors: self-weight, wind load, seismic action, and thermal stress. Key indicators include a safety factor ≥3, deflection ≤1/250 of the span, and tensile pull-out force at connection points ≥5kN. In the design of the 18-meter cantilevered eave for the Shenzhen Pingshan High-Tech Zone Comprehensive Service Center, Qinglong Group optimized load distribution through finite element analysis, adopting post-tensioned prestressing technology (tension force ≥120kN) and auxiliary steel structure supports, keeping the deflection at the cantilevered end within L/300—far exceeding code requirements. Scientific load-bearing calculation is the fundamental safeguard for the safety of suspended shapes.

Load analysis is the starting point of calculation. In addition to conventional loads, special consideration must be given to wind vibration effects and crowd loads (e.g., walkable shapes). We determine wind pressure distribution through CFD fluid simulation. In the Nanning Wuxiang China Resources MixC One project, analysis revealed wind pressure concentration at the cantilever root, and the reinforcement ratio in that area was specifically increased by 20%. Seismic action is calculated according to the fortification intensity, with focus on verifying the shear capacity of connection points.

Accurate values of material performance parameters are essential. GRC tensile strength takes the standard value of 8-12MPa, and elastic modulus 25-30GPa; these parameters must be determined through material property testing. Qinglong Group's laboratory conducts performance tests on every batch of products, providing accurate inputs for calculations. For irregular shapes, we measure the actual stress distribution using the Digital Image Correlation (DIC) method to verify the calculation model.

The connection system is critical to safety. Suspension points adopt a safety redundancy design, with dual protection at critical locations. We have established a full-process quality control system from calculation to installation, ensuring that every suspended shape is safe and reliable. Load-bearing calculation is the art of balancing artistry and safety.