Construction method for temporary positioning of catenary at unfavorable terrain

The invention discloses a construction method for temporary positioning of a catenary at an unfavorable terrain. The construction method comprises the steps of on-site pile crossing and measurement, calculation and prefabrication of an auxiliary cable (6), calculation and prefabrication of a transverse inhaul cable (1), excavation and backfilling of a stay wire pit, and on-site installation and adjustment. The temporary auxiliary cable (6) is adopted to fix the transverse inhaul cable (1), and the catenary is fixed through the transverse inhaul cable (1), so that drilling, anchor bolt implanting and steel column mounting on an existing bridge are avoided, and damage to the existing bridge is avoided; the catenary transverse adjustment positioning point above the frame structure bridge is determined through early-stage measurement and calculation, so that the construction links are reduced, and the accuracy of the transverse adjustment positioning point is improved; the adopted method is simple and practical,