Working method for steel plate pile dismantling device special for bridge cofferdam construction

The invention relates to the technical field of bridge construction equipment, in particular to a steel sheet pile dismantling device special for bridge cofferdam construction. The device comprises abottom plate, a rotating mechanism, a walking mechanism, a clamping and limiting mechanism, a beating and vibrating mechanism and a bottom plate fixing mechanism; the right end of the bottom plate isprovided with a storage box with an upward opening; the clamping and limiting mechanism comprises a lifting component, a correcting and limiting component, a clamping component and a lifting plate which is horizontally arranged; and the lifting plate is arranged on the lifting component. The device has the beneficial effects that the two ends of a steel sheet pile can be automatically limited through the correcting and limiting component, so that deviation during moving or pulling process is avoided due to the fact that the upper end of the steel plate pile is clamped; the clamping operation of the steel plate pile can