Sky roof expansion joints are a common type of structural joint in buildings, used to address deformation and displacement of structures under various factors such as different temperatures, humidity, and loads. Depending on their different application scenarios, sky roof expansion joints can be categorized into the following types:

Linear Shrinkage Joints: Linear shrinkage joints refer to joints set along a straight line. They are suitable for large areas of concrete floors indoors, corridors, aisles, and similar locations.

Circular Deformation Joint: A circular deformation joint refers to a ring-shaped gap installed around a building. It is suitable for locations such as the roofs of large buildings and underground parking garages.

Grid-shaped expansion joints: Grid-shaped expansion joints refer to gaps arranged in a grid pattern. They are suitable for large concrete floor areas, public squares, and similar locations.

Cross-shaped expansion joints: A cross-shaped expansion joint refers to expansion joints set at intersections. It is suitable for locations such as basements and underground pipelines in large buildings.

In summary, the types and application scenarios of Tianmian Deformation Joints vary depending on the specific building, and they require design and selection based on actual conditions.