Installation or replacement method of inverted tunnel in service

摘要

To provide a method of changing the invert of a tunnel under service which is superior in strength and durability by carrying out integral construction of invert while maintaining alternate passage on one side.SOLUTION: The present invention relates to a method of manufacturing a pedestal comprising steps of alternately removing one side of pavement, a step of alternately placing a plurality of piles on one side from which the pavement has been removed, a step of placing a cross girder on the piled head A step of removing a lining plate on one side and excavating the ground to alternately remove the invert to form a space portion; a step of forming a space portion on the center side A step of laying a lining plate on both end sides of the space plate, removing the lining plate on both end sides and casting the concrete on the bottom surface of the space part so as to integrally form the invert, and removing the lining plate on one side, A step of laying a lining plate on one side and alternately back filling over the invert on one side with road flooring material and a step of paving the top of the backfilled road flooring material with concrete.(FIG.