What Are the Transport Fixing Methods for Large-Size GRC Panels? Safe Transport Fixing Solutions and Practical Operation Standards

Large-size GRC panels (typically referring to lengths over 4m or areas over 10㎡) are prone to bending deformation, edge damage, and surface scratches during transportation due to their large dimensions, heavy weight, and relatively low stiffness. Scientific transport fixing methods are key to ensuring panel integrity. Drawing on transport experience from large projects such as the Hainan International Convention and Exhibition Center and the Shenzhen Pingshan High-tech Zone, Qinglong analyzes the core fixing methods and practical specifications.

1. Core Principles of Transport Fixing for Large-Size GRC Panels

Transport fixing must follow four principles: rigid support, even load distribution, impact protection, and secure reliability. Rigid support principle: use customized rigid transport frames to ensure panels bear load evenly and avoid localized compression deformation. Even load distribution principle: panels should be placed vertically or at an incline (inclination angle ≥75°); horizontal stacking is prohibited; each panel must have no fewer than 4 support points with support spacing ≤1m. Impact protection principle: flexible cushioning materials should be placed between panels and between panels and the transport frame, with reinforced protection at edges and corners. Secure reliability principle: use multiple fixing methods to ensure no displacement or shaking during transport. Qinglong strictly followed these principles when transporting double-curved large panels for the Guangxi New Media Center, reducing the panel damage rate to below 0.1%.

2. Core Transport Fixing Methods and Equipment Selection

Common transport fixing methods fall into two categories: dedicated transport frame fixing and customized container fixing. Dedicated transport frame fixing: the frame is welded from structural steel with dimensions matched to the GRC panels; anti-slip pads and fixing bolts are installed at the bottom; panels are placed vertically and secured on both sides with adjustable push-tight devices, with the clamping areas wrapped in rubber pads to avoid surface damage. Customized container fixing: for extra-large GRC panels (length >6m), custom containers are used with rigid support frames and impact cushioning layers inside; panels are secured with dual fixing of diagonal braces plus cables to ensure stability during transport. Flatbed trailers or low flatbed trailers should be selected, with flat vehicle floors and load capacity matched to panel weight. In the Shanghai Qingpu R&D project, Qinglong used a 12-meter low flatbed trailer to transport 6m×3m large GRC panels safely and efficiently.

3. Practical Procedures and Key Points of Transport Fixing

Standardized procedures ensure fixing effectiveness and avoid transport risks. Pre-loading preparation: inspect the transport frame and fixing equipment to ensure no damage or deformation; clean the GRC panel surfaces, apply impact-resistant rubber strips to edges, wrap panels entirely with pearl cotton or bubble film, and cover surfaces with dust cloths; use a crane for hoisting, selecting flexible slings to prevent wire ropes from directly contacting the panels; keep lifting smooth to avoid collisions. Loading and fixing: slowly hoist panels onto the transport frame and adjust positions so that support points bear load evenly; panel spacing should be ≥100mm, with EVA foam boards filling the gaps; secure panels with high-strength nylon straps or dedicated clamps at strap spacing ≤500mm, combined with push-tight devices for dual fixing; install a rain canopy on top of the transport frame to prevent rain erosion. During transport: choose smooth road conditions, keep speed within 60km/h, and avoid sudden braking and sharp turns. Through this procedure, Qinglong has achieved zero damage in long-distance transport of large-size GRC panels.

4. Optimized Transport Fixing Solutions for Special Scenarios

Fixing solutions should be adjusted for different scenarios to improve adaptability. Extra-long, extra-thin GRC panels (length >6m, thickness <20mm): transport frames use segmented supports with an increased number of support points at spacing ≤800mm, and temporary reinforcing bars are added at the panel midsections to prevent bending deformation. Large-size shaped GRC panels (such as double-curved or hollow panels): customized mold-type transport frames are used to precisely fit the panel shape and ensure even loading, with dedicated protective nets installed at hollow areas to prevent damage. Cross-border transport: sealed container transport is used, with anti-sway devices added inside and panel protection upgraded to double-layer pearl cotton plus wooden boards. In the transport of large-size GRC panels for the Singapore Defence Service Center project, Qinglong ensured safe and compliant cross-border delivery through this optimized solution.