| 摘要 |
PURPOSE: A precast cross beam reinforced by a connection steel box is provided to simplify and automatize a process, to reduce the term of works, to use only one bearing device without additional support and to prevent overturn and movement of a girder and crack. CONSTITUTION: The precast cross beam reinforced by a connection steel box comprises the steps of reinforcing a joint where a PS concrete girder or another cross beam is connected using a steel box(12,13), and installing a welding headed stud(26) or a bolting headed stud(24) to the inside of the connection steel box to move together with a cross beam and to connect mechanically by a high-tension bolt, a bolting headed stud or welding. |
