Upward dismantling device and method for continuous beam bridge

The invention discloses an ascending type dismantling device for a continuous beam bridge. The ascending type dismantling device comprises a static pressure suspension support and a crane. The static pressure hanging support comprises a support body, a jack and a hanging rod, the support body is detachably installed on a beam section adjacent to a to-be-cut beam section, the jack is installed on the support body, the hanging rod is connected with a piston rod of the jack, the hanging rod is detachably connected with the to-be-cut beam section, and the jack pre-lifts the to-be-cut beam section through the hanging rod. And the potential energy of the impact load is absorbed when the to-be-cut beam section is cut off. And the crane is connected with the to-be-cut beam section, after the to-be-cut beam section is cut off, the dismantled beam section is lifted to the position above the bridge, and the crown block lifts and transports the dismantled beam section to the beam transporting vehicle from the position ab