EARTHQUAKE STRENGTHENING STRUCTURE AND METHOD FOR EXISTING BUILDING FRAME

摘要

PROBLEM TO BE SOLVED: To construct a strengthening structure capable of securing sufficient bearing force at a low cost.SOLUTION: A column section 20 of a strengthening structure 10 has: a left-and-right pair of steel plates 21 which are arranged parallel to each other in a manner that extends along an existing column 2; a concrete section 22 which is constructed in a manner that fills a gap between the left-and-right pair of steel plates 21 with concrete; and studs 23 which are installed on the left-and-right pair of steel plates 21 to fix the same to the concrete section 22. A beam section 30 of the strengthening structure 10 has: an upper-and-lower pair of steel plates 31 which are arranged parallel to each other in a manner that extends along an existing beam 4; a concrete section 32 which is constructed in a manner that fills the gap between the upper-and-lower pair of steel plates 31 with the concrete; and studs 33 which are installed on the upper-and-lower pair of steel plates 31 to fix the same to the concrete section 32.