PC CONDUIT-COUPLING METHOD

摘要

The present invention relates to a PC (precast concrete) conduit-coupling method, and more specifically, to a PC conduit-coupling method wherein when a PC conduit is coupled, portions to be coupled are attached using a steel wire and coupled using a coupler, then the steel wire is removed and a waterproof sheet is applied to secure water tightness, and corrosion of the coupled portions can be prevented, and the cost of construction can be reduced. The method comprises: a steel-wire attachment step of closely attaching portions to be coupled by a steel wire inserted into a through-hole, when continuously coupling PC conduits; a coupler-fastening step of coupling reinforcing rods buried in the PC conduits and protruding from mortar-filled grooves in the portions to be coupled using a coupler and fastening a joint of coupling ends; a waterproof sheet-sealing step of removing the steel wire inserted into the through-hole and bonding secondary waterproof sheets onto the surfaces of waterproof sheets inside both lateral mortar-filled grooves, which are buried in the conduits and extendedly installed exposing to the mortar-filled grooves, without any clearance so that the coupled conduits are tightly sealed; and a mortar-filling step of filling mortar into the mortar-filled grooves and finishing coupling the conduits.