STRUCTURE CONSTRUCTING METHOD, TEMPORARY REINFORCING METHOD FOR EXISTING STRUCTURE, AND STRUCTURE RECONSTRUCTING METHOD

摘要

PROBLEM TO BE SOLVED: To simply install and simply remove strong supporting comparable to a reinforced concrete structure.;SOLUTION: When a structure such as a tunnel is constructed, a tunnel of a small cross-section or an intermediate skeleton 4 as a preceding structure is constructed in advance, a frozen soil wall 8 as supporting is installed in the interior of the preceding structure, and then the supporting is removed after an upper skeleton 2 and a lower skeleton 3 as a following structure are constructed. When the supporting is installed, a freezing medium having fluidity at normal temperatures and frozen at a temperature not higher than a freezing temperature to demonstrate strength is employed, and the freezing medium is filled in a form at normal temperatures and forcedly cooled to temperatures not higher than the freezing temperature. When the supporting is removed, the freezing medium is forcedly heated or naturally heated to temperatures not lower than the freezing temperature to fuse and restore fluidity. Using earth and sand containing water as the freezing medium is recommended, and further embedding a latticed fiber reinforcement in the freezing medium is recommended.;COPYRIGHT: (C)2009,JPO&INPIT