Concrete-filled steel tube arch bridge vertical splicing jig frame adjusting structure and using method thereof

The invention discloses a vertically-spliced jig frame adjusting structure of a concrete-filled steel tube arch bridge. The two ends of the two webs A are fixedly connected with the large side plate A and the small side plate B. The lower portions of the large side plate A, the two webs A and the small side plate B are fixedly connected with the bottom plate, the upper portions of the large side plate A, the two webs A and the small side plate B are fixedly connected with the sliding plate seat, and the two ends of the two webs B are fixedly connected with the small side plate A, the large side plate B, the small side plate A and the two webs B. The lower portion of the large side plate B is fixedly connected with the sliding plate, and the upper portion of the large side plate B is fixedly connected with the top plate. The limiting screw penetrates through the large side plate A, the sliding plate seat, the sliding plate and the two ends of the large side plate B to be screwed into nuts to be connected. The