| 摘要 |
PURPOSE: A dowel bar is provided to easily move a movable piece as lubricant is coated between a circular steel bar and a thermal expansion pipe to reduce frictional force. CONSTITUTION: A dowel bar(20) comprises a cross bar(30), a chair bar(40), and a circular or angular steel bar. The cross bar is installed on the dowel bar, and the chair bar is installed. The dowel bar is fixed to the real side and front sides of the chair bar by fillet welding. The dowel bar is mounted on a dowel bar assembly(10). The circular or angular steel bar comprises a fixed end and a movable end. One side of the fixed end is fixed to concrete. The other side of the fixed end moves in the concrete. |
