Hazard analysis and protection measures of direct lightning on Lishui bridge

Lishui Bridge is the key control projection of Zhang Hua freeway. Lightning strike not only can cause casualties, but also can destroy the bridge and other electro-mechanical systems. As a result, the traffic safety will be jeopardized. Taking advantage of lightning location information, analyzing the lightning activity rhythm of Lishui area, the estimation results of lightning damage and spatial and temporal distribution of lightning can be obtained. Several key measures were put forward to when the site survey information and bridge structure were analyzed.