STRINGING METHOD OF OPTICAL FIBER COMPOSITE OVERHEAD EARTH WIRE

摘要

PURPOSE:To apply a prefabrication method to an optical fiber overhead earth wire and to enable improvement in workability by stringing the overhead earth wire fixed with drop-wire clamps at intervals allowing for sag between steel towers by means of a traction wire and anchoring the drop-wire clamps to the steel towers. CONSTITUTION:The span length between steel towers are precisely measured and drop-wire clamps 14 are fixed to an optical fiber composite overhead earth wire 10 inserted internally with an optical fiber cable 9 at the intervals corresponding to the measured span length added with a sag amount and interposed with surplus amounts B1, B2 in the stage of stringing the wire 10 between the steel towers. The front end of the wire 10 is pulled by a messenger wire and is strung between the steel towers and thereafter the wire 10 is anchored to the steel towers except the lengths B1, B2.... The application of a prefabricated stringing method to the wire 10 is thus made possible and the workability is remarkably improved.