What Are the Transportation Fixing Methods for Ultra-Thin UHPC Panels (≤20mm)?

During transportation, ultra-thin UHPC panels (≤20mm), owing to their "large, thin, brittle, and heavy" characteristics, are highly prone to warping, vibration resonance, and edge or corner damage, placing extremely high demands on fixing methods. Traditional rope lashing or simple wooden blocking is completely infeasible. Based on extensive experience in transporting ultra-thin panels, Qinglong Group has developed a professional "four-in-one" transport fixing solution: "rigid frame constraint, vacuum adsorption fixing, flexible cushioning isolation, and dynamic monitoring with early warning." When transporting 500 pieces of 18mm-thick, 3m×1.5m translucent UHPC panels for an art installation in Shanghai, we used custom A-type steel frames combined with a vacuum system, achieving zero breakage over a 3,000 km long-distance journey.

Rigid Dedicated Transport Frames Are the Core Carrier

Flat stacking must be abandoned in favor of vertical transport. For this purpose, dedicated "A-type frames" or "grid-type multi-layer racks" must be designed and manufactured. The frame is welded from structural steel and offers extremely high rigidity and stability, resisting overall deformation caused by road bumps. Each slot is precisely sized to the panel dimensions, with flexible cushioning materials (such as high-density foam or rubber) attached to the inner sides. Panels are inserted vertically into the slots, with initial constraint provided by bottom positioning grooves and side stop blocks, ensuring no rigid contact between panels or between panels and the steel frame. Vertical transport maximizes the use of compartment space and prevents bending stress in panels caused by their own weight.

Vacuum Adsorption Systems Provide Active Fixing Force

For polished or high-value ultra-thin panels, once placed vertically in the rack, a vacuum adsorption system is applied for secondary reinforcement. Multiple vacuum suction cups are arranged on both sides of the rack or on the back of the panels, generating negative pressure via a vacuum pump to firmly "suction" the panels onto the rack surface. This not only provides strong normal-direction fixing force to prevent panels from tipping forward during sudden braking, but also effectively suppresses panel tremor during transport (a resonance phenomenon that drives microcrack propagation). The vacuum system is equipped with pressure gauges and safety valves to monitor adsorption status in real time.

All-Round Flexible Cushioning and Corner Protection

All metal components that may come into contact with UHPC panels must be wrapped and isolated with flexible materials. 1) Corner protection: thickened PE or PU corner protectors are used to tightly wrap the four corners of the panels and secured to the steel frame with strapping bands. 2) Edge protection: elastic rubber strips are inserted between the panel sides and the rack stop blocks. 3) Surface protection: the panel faces are covered with scratch-resistant protective film or separated with felt. The selection of cushioning materials must take into account their compression deformation characteristics and resilience to ensure they do not fail under prolonged vibration.

Intelligent Monitoring and Standardized Loading and Unloading Operations

During transportation, onboard GPS and vibration monitors record the transport route, vehicle speed, number of sudden accelerations and decelerations, and vibration acceleration spectra. Once abnormal vibration is detected, the system issues an alert. This serves both as process monitoring and as data for analyzing potential causes of damage. During loading and unloading, vacuum suction lifting devices must be used, operated by trained workers, lifting smoothly and placing or removing panels from the racks slowly; dragging is strictly prohibited. Transport vehicles should be air-suspension models, with the compartment filled with anti-collision air cushions for further shock absorption.

In summary, transporting ultra-thin UHPC panels is a highly technical logistics operation. Qinglong Group manages every shipment as a precision engineering project, using customized hardware equipment and standardized operating procedures to ensure these "thin as ice" artworks arrive safely at the construction site.