Construction structure for dismantling girder of bridge girder erection machine

The utility model discloses a bridge girder erection machine girder dismantling construction structure which comprises sleeper layers capable of being folded or unfolded in a rotating mode to form variable widths, and the multiple sleeper layers are mutually stacked. And the main beam is stressed and supported on the mutually stacked sleeper layers. A sleeper layer capable of being folded or unfolded in a rotating mode is formed by the multiple sleeper strips through the hinge arms A and the hinge arms B. The multiple sleeper layers are stacked in a staggered mode to support the main beam, and due to the fact that the single sleeper layers form a whole with the variable width, the stress supporting stability of the main beam is improved, and the stability of the main beam is improved. The problem that sleeper strips on the same layer cannot form a variable whole to be stacked, and the stress supporting stability of a main beam is poor is solved. 本申请公开了一种架桥机主梁拆除施工结构，包括：能进行旋转收拢或撑展构成可变宽度的枕木层，多个枕木层相互堆叠；主梁，主梁受力支撑在