Fabricated steel-concrete composite structure pedestal and pre-tensioning method T beam construction method

The invention discloses a pre-tensioning method T beam construction method for a fabricated steel-concrete composite structure pedestal. The device is provided with an end foundation, a counter-forcesupport, a tensioning cross beam, an anti-pulling foundation, a bending device and a force transmission column. Concrete end bases are arranged at the two ends of the pedestal, a prestress tension transmission column is of a reinforced concrete structure, and a tension counter-force beam is machined through profile steel. The force transmission column is designed according to the eccentric pressedcolumn, and the adjacent pedestals in the middle share the force transmission column. The force transmission beam is moved to the underground, so that site occupation and construction are effectivelysaved; a counter-force support system is added, the length of the tensioning cross beam is shortened, a fixed tensioning cross beam is cancelled, and a large-diameter tensioning rod is connected witha movable cross beam to con