TUNNEL, TUNNEL CONSTRUCTION METHOD, AND DEVICE FOR SUPPRESSING CRACKING OF LINING CONCRETE

摘要

PROBLEM TO BE SOLVED: To provide a technology of restraining lining concrete from being cracked due to the displacement of natural ground, in tunnel lining.;SOLUTION: This tunnel includes: a sprayed concrete section which is composed of concrete sprayed on the excavated surface of the natural ground; a fixing section which is inserted toward the natural ground from the inside of the sprayed concrete section, so as to integrate the natural ground and the sprayed concrete section together; a buffer section which is composed of an elastic member provided inside the sprayed concrete section in such a manner as to cover the concrete section, and which is thick enough to allow the displacement of the natural ground; and a lining concrete section which is provided in such a manner as to cover the inside of the buffer section.;COPYRIGHT: (C)2010,JPO&INPIT