Joint structure for H-beam

An H-beam joint structure for joining an H-beam and a steel material, the steel material having at least a flange and a web,

• the H-beam joint structure comprising:
• a first transmission plate arranged at an end of the steel material, the first transmission plate being parallel to a front surface of the web of the steel material and welded to a back surface of the flange of the steel material;
• a second transmission plate arranged at an end of the H-beam that is immediately adjacent to the end of the steel material, the second transmission plate being parallel to a front surface of a web of the H-beam and welded to a back surface of a flange of the H-beam;
• and
• a coupling plate connecting the H-beam and the steel material, the coupling plate being arranged on opposite sides of the web of the H-beam and the web of the steel material relative to sides of the web of the H-beam and the web of the steel material where the first and second transmission plates are arranged,
• wherein the coupling plate extends across the first and second transmission plates, and the web of the H-beam, the web of the steel material and the first and second transmission plates are bolted via the coupling plate by a plurality of first bolts and a plurality of second bolts, such that each first bolt extends through the coupling plate, the first transmission plate and the web of the steel material, and such that each second bolt extends through the coupling plate, the second transmission plate and the web of the H-beam.