Method for removing section steel concrete column

A method for removing a section steel concrete column, comprising:

• determining a failure portion of the section steel concrete column according to a height dimension of the section steel concrete column;
• crushing the failure portion to obtain a blasting position, part of section steel of the section steel concrete column being exposed at the blasting position;
• a blasting object being provided at concrete and the part of the section steel at the blasting position, the blasting object provided at the part of the section steel being a linear energy-concentrating cutter;
• detonating the blasting object to remove the section steel concrete column;
• the failure portion being located at two ends of the section steel concrete column, and a length of the failure portion being ¼ to ⅓ of a length of the section steel concrete column;
• the step of crushing the failure portion to obtain a blasting position comprising:
• crushing part of concrete at the failure portion by means of mechanical crushing to obtain a crushed portion;
• cutting an exposed steel bar at the crushed portion to obtain the blasting position;
• the blasting positions on the two ends of the section steel concrete column being centred on a centre line of the section steel concrete column in a centrosymmetric relationship.