Reinforcement method and reinforcement structure of the corrugated steel plate structure

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 (S10) 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 (S20) 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 (S30) 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 (S40) 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 (S50) 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 (S30) 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).