Patent ID: 8220220

Claim:
A method of reinforcing a corrugated steel plate structure having alternating furrows and ridges, the reinforcing method comprising: affixing to a surface of said corrugated steel plate structure at each one of a plurality of intervals spaced along an axial length of said corrugated steel plate structure, a discrete reinforcement liner having a predetermined length coextensive with the lengths of said alternating furrows and ridges, and a predetermined width, each said reinforcement liner being provided by, an anchor bolt installing step (S 10 ) of forming an anchor bolt insert hole ( 13 ) through each of a plurality of furrows and/or ridges spanning a segment of said axial length of said corrugated steel plate structure shorter than the width of said liner, and installing an anchor bolt ( 21 ) in each anchor bolt insert hole ( 13 ) such that an upper end of each anchor bolt ( 21 ) protrudes from the surface of the corrugated steel plate ( 10 ) to a predetermined height; a reinforcing bar installing step (S 20 ) of fastening a reinforcing bar ( 22 ) to each anchor bolt ( 21 ), which protrudes from the surface of the corrugated steel plate ( 10 ), using a wire ( 23 ); a mold installing step (S 30 ) of mounting a mold ( 30 ) to at least one anchor bolt ( 21 ) using a nut ( 24 ) such that the reinforcing bar ( 22 ), which has been installed above the surface of the corrugated steel plate ( 10 ), is covered with the mold ( 30 ), the mold ( 30 ) having a cavity with a length parallel to said furrows and ridges and a width transverse to said furrows and ridges and less than said length so that the liner formed therein is elongated in a direction parallel to said alternating furrows and ridges of said corrugated steel plate; a concrete placing step (S 40 ) of placing concrete ( 60 ) inside the mold ( 30 ), which has been installed on the surface of the corrugated steel plate ( 10 ); and a mold removing step (S 50 ) of removing the mold ( 30 ) after the concrete ( 60 ), which has been placed inside the mold ( 30 ), has been cured, wherein the mold installing step (S 30 ) comprises: placing a seal ( 40 ) between the mold ( 30 ), which has been mounted on the surface of the corrugated steel plate ( 10 ), and the surface of the corrugated steel plate ( 10 ); and reinforcing the mold ( 30 ), which has been mounted on the surface of the corrugated steel plate ( 10 ), using a support bar ( 50 ) spanning the width of said mold with threaded parts ( 51 ) formed on opposite ends of the support bar ( 50 ) and engaging with respective locking nuts ( 52 ).