Transmission towers are the main link of electric energy transmission, exchange and regulation in the power system. The bolted joints play a vital role in ensuring the bearing capacity of the transmission towers. To realize the smart transmission line and build the database of the hysteresis performance of the tower, it is necessary to dig into the mechanical properties of the bolted joint. In this paper, two types of finite element models of a 500 kV wine-glass extra high voltage (EHV) transmission tower were set up by ABAQUS to assess the dynamic response under wind load. Then the hysteresis curve and energy dissipation coefficient of a typical bolt joint connection with different displacement amplitudes were explored by numerical simulation. After that, the influence of the friction coefficient on the mechanical properties was analyzed. The results show that the displacement amplitude has a great influence on the hysteresis performance. The energy dissipation coefficients of the joints fluctuate with displacement amplitudes and reach a peak at 1.4 mm. Increasing the friction coefficient of the contact surfaces can enhance the deformation capacity. The research can provide a reference for the design and optimization of the bolted joint connection of the tower and lay a foundation for digital twins of future transmission lines.