STRUCTURE OF PIPE JOINT PART FOR SHEATH PIPE JACKING METHOD

PROBLEM TO BE SOLVED: To provide a structure of a pipe joint part used for the aseismatic sheath pipe jacking method for a fluid transporting pipe used for water service, gas, and sewerage or the like, which is extendable even when it is being filled with air mortar. SOLUTION: The spigot of a pipe is inserted and connected into a socket provide at the rear end part of a preceding pipe to newly form a conduit in a sheath pipe. An expansion/shrinkage margin capable of being expanded or shrunk in the prescribed range when large external force by an earthquake or the like is applied is secured on the joint part used for the jacking method. A first spacer having the prescribed length and arranged on the outer periphery of the spigot so that the front end part is kept in contact with the rear end part of the socket and a second spacer having the prescribed length and arranged on the front side outer periphery of the large-diameter part of the socket are provided.