Overweight combined highway and railway bridge rigid suspending cable stiffened continuous steel trussed beam pushing device with stiffening string

The invention discloses an overweight combined highway and railway bridge rigid suspending cable stiffened continuous steel trussed beam pushing device with a stiffening string. The pushing device comprises a sliding device, a vertical jacking device, a horizontal pushing system device and a transverse deviation rectifying device. The sliding device comprises a left girder sliding block, a middle girder sliding block and a right girder sliding block and slideway beams. The sliding blocks are located above the slideway beams, MGE sliding plates with oil channels are arranged at the bottoms of the sliding blocks, and a long MGE stainless steel plate is laid on the tops of the slideway beams. The vertical jacking device comprises a left girder vertical lifting jack, a middle girder vertical lifting jack, a right girder vertical lifting jack, a horizontal counter force seat and distributive girders, and the horizontal contour force seat is fixed to the front ends of the slideway beams. The transverse deviation re