Local casing pipe repairing method and device for damaged concrete-filled steel tubular column

The invention relates to a local casing pipe repairing method and device for a damaged concrete-filled steel tubular column, and belongs to the field of building structures.The local casing pipe repairing method comprises the following steps that S1, a first fixing plate and a second fixing plate are welded and fixed to the outer wall of an upper steel pipe, and then a first mounting plate and a second mounting plate are welded to the upper end and the lower end of an outer steel plate correspondingly; s2, the outer wrapping sleeve is installed; s3, the bottom of a fixing rod is inserted into an insertion hole in a third fixing plate, and then a first locking nut is in threaded connection with an adjusting rod; s4, then the tightening assembly is installed; s5, then a second locking nut is in threaded connection with the adjusting rod, and the second locking nut is covered with a cap; s6, grouting is conducted on the grouting holes till grout flows out of the grout outlet holes; and S7, after concrete is hard