STATIC IMBALANCE MODE AND CRITICAL WIND SPEED OF UPRIGHT HUMAN BODY UNDER THE ACTION OF STRONG WINDS

Strong winds can easily cause human imbalance, and existing research rarely addresses personnel safety and human imbalance. Aiming to address the problem of static imbalance of human body under normal strong wind conditions, four types of human body imbalance modes are proposed, and the corresponding critical wind speed formula for imbalance are deduced, considering the influence of various imbalance factors. The results show that the critical wind speed of friction imbalance and torsion imbalance is related to the friction coefficient. The actual imbalance mode experienced by the human body is torque imbalance, and the critical wind speed of 30° wind angle imbalance is the lowest at 13.44 m/s. The human body will become unbalanced in different wind levels due to variations in weight and height. Therefore, when the wind weather warning signal is yellow, orange, or red, people should avoid going out. The study reveals the characteristics of human imbalance under the action of strong winds and provides an important reference for personnel evacuation and government emergency management during wind disasters.