Movable sound barrier structure suitable for super-long expansion joint of road bridge

The invention relates to a movable sound barrier structure suitable for a super-long expansion joint of a road bridge, which comprises a plurality of layers of sound barrier unit plates arranged between adjacent steel columns, aluminum profiles are fixedly arranged at the tops and/or bottoms of the sound barrier unit plates, and the adjacent aluminum profiles are clamped together in a relatively sliding manner. The adjacent aluminum profiles are connected together through the safety ropes, so that the two adjacent aluminum profiles can be staggered relatively, and the aluminum profiles located on the innermost side and the outermost side and/or the sound barrier unit plates are connected with different steel stand columns respectively. The movable sound barrier structure can be normally used under the condition that the bridge deck of a bridge road stretches out and draws the original effect of a sound barrier, a traditional single-layer sound barrier unit plate is replaced by a double-layer, three-layer or m