Roof structure with position-adjustable bottom plate

The utility model relates to a roof structure with the position of a bottom plate adjustable. The roof structure comprises a plurality of rows of purlin supports vertically installed on a main body steel structure. The purlins are mounted on each row of purlin supports in a position-adjustable manner, and the positions of the purlins are adjusted to adapt to the mounting position of the bottom plate; the bottom plate is arranged below the purlins, and the bottom plate is provided with through holes for the purlin supports to penetrate through; the plurality of bearing pieces are arranged on the purline at intervals along the length direction of the purline; and the roof panel is arranged on the plurality of bearing pieces. The installation positions of the purlins can be adjusted according to the installation position of the bottom plate, so that the installation position of the bottom plate can be flexibly adjusted, more convenience is achieved, and the application range is wider. 本实用新型涉及一种底板位置可调的屋面结构，包括：竖向地