How to Prevent Edge and Corner Damage During UHPC Component Transportation? Transport Protection Techniques and Safety Standards

UHPC components are hard but relatively brittle; during transport, edges and corners are prone to damage from collisions and vibration, especially for irregular and oversized components, which carry a higher risk of damage. Scientifically formulated transport protection measures and safety standards are key to ensuring the intact delivery of components. Drawing on extensive transport case studies, Qinglong analyzes the core protection solutions.

1. Core Packaging Protection Measures Before Components Leave the Factory

Pre-shipment packaging is the first line of defense against edge and corner damage and requires targeted protection. For edge and corner protection, custom foam corner guards (thickness ≥50mm) are wrapped around components and secured externally with waterproof tape; for oversized components, wooden protection boards are additionally fitted at edges and corners to enhance impact resistance. In Qinglong's transport of 12㎡ UHPC components for Shanghai Century Plaza, dual edge and corner protection resulted in zero damage throughout the journey. Flat panel components are packed vertically with surfaces covered by PE protective film to prevent scratches and moisture erosion, with rubber buffer pads placed between layers to prevent mutual friction and collision. Irregular components such as sculptures and double-curved panels are sealed in custom foam molds that fully conform to the component shape, restricting movement space and reducing vibration impact. Qinglong's custom packaging for irregular components keeps the damage rate below 0.5%.

2. Transport Vehicle and Loading/Securing Standards

Transport vehicle selection and loading/securing directly affect transport safety and must strictly follow standards. Flatbed special-purpose transport vehicles are selected, equipped with hydraulic lifting devices and fixed slots, with anti-slip rubber mats laid on the vehicle floor to reduce component sliding. During loading, cranes are used for smooth hoisting, and collisions must be avoided during lifting and placement. Flat panel components are placed vertically at an incline (10-15° angle), irregular components are fixed in their design posture, and loading height does not exceed 2 layers. For securing, special straps and turnbuckles are used, with rubber sleeves fitted at contact points between straps and components to avoid crushing damage; securing points are set at 1.5m intervals to ensure no loosening. Qinglong's transport fleet is staffed with dedicated securing personnel to ensure firm loading. Long-distance transport vibration tests show that component displacement after securing is ≤5mm.

3. Safety Control Measures During Transport

Transport process control can promptly avoid risks and safeguard component safety. Reasonable transport routes should be selected, avoiding bumpy sections, sharp bends, and height-limited sections. Long-distance transport is equipped with GPS positioning systems to monitor vehicle driving status and component conditions in real time; Qinglong assigns dedicated personnel to accompany long-distance transport, checking securing conditions every 2 hours. Driving speed must be controlled: ≤80km/h on expressways and ≤60km/h on national highways, avoiding sudden braking and sharp turns to reduce inertial impact on components. Transport should be avoided in severe weather (heavy rain, strong wind, low temperature); when transport is truly necessary, rainproof and thermal covers are added and vehicles are equipped with anti-slip chains to ensure transport safety. In Qinglong's cross-sea transport from Hainan to Guangdong, strict control ensured the intact delivery of components.

4. Protection Extension for Unloading and On-site Transfer

Unloading and on-site transfer are high-risk stages for damage and require continued protection measures. Unloading uses cranes matched to the loading equipment, fitted with special lifting devices to avoid component deformation caused by single-point lifting, with flexible cushioning layers set at contact points between lifting devices and components. On-site transfer uses flatbed trailers or hydraulic forklifts, with special pallets placed under component bottoms; slow down when turning and climbing slopes to prevent components from slipping off. After unloading, component edge and corner conditions should be checked immediately; when minor damage is found, special repair agents should be applied promptly to prevent damage from expanding. In Qinglong's Shenzhen Pingshan High-tech Zone Comprehensive Service Center project, full-process transport protection achieved a 99.5% intact arrival rate for components, ensuring smooth subsequent installation.