Effect of Inflow Angle on Aerodynamic Characteristics of Gantry Crane

The wind-induced effect of crane structure under different wind field conditions affects its safety. Based on the theory of computational fluid dynamics, the flow characteristics and wind load of gantry crane under different inflow angles are discussed and analyzed by numerical simulation. The main conclusion is that the wind load of the crane structure is determined by the positive pressure on the windward surface and the negative pressure on the leeward side surface. When the airflow crosses the front beam, a recirculation zone is formed between the main beams due to flow separation, which causes the vortex to continuously act on the windward surface of the rear beam. The wind load of the structure varies greatly under different inflow angles. The change of wind load of main beam determines the change trend of wind load of crane. The maximum wind load will occur under incoming flow perpendicular to the direction of the main beam. The overall wind load of the structure is lower when the rigid leg is located on the upstream windward. The running direction of the car on the top of the crane is parallel to the prevailing wind direction of the environment, and the rigid leg is located upstream, which is conducive to reducing energy consumption and improving safety.