Method of constructing information correspondence pipe, constructed structure, and construction member

摘要

The object is to provide a construction method of an information-communicable underground pipe whereby communication cables can be readily laid in an underground pipeline having a main pipe and branch pipes branched therefrom thereby allowing the underground pipeline to be used as an information-communicable underground pipe, and to provide a construction structure and a construction member therefor. The construction method of an information-communicable underground pipe comprises inserting a sheath pipe ( 1 ) into an underground pipeline ( 17, 7 ) through a manhole ( 9, 10 ), the sheath pipe having a main body ( 3 ) formed with an empty room ( 2 ) for installing a communication cable ( 6 ) thereinto and a high-strength low-elongation material element ( 4 ) integrally formed in the main body ( 3 ) along the length of the main body ( 3 ), and securing the high-strength low-elongation material element ( 4 ) onto the inner wall of said manhole ( 9, 10 ) by applying tension thereon to secure the sheath pipe ( 1 ) in the substantially upper part inside the underground pipeline ( 17, 7 ).