| 摘要 |
A method for lifting a slab of a bridge by using a high tension steel rod and an assembly steel bracket is provided to guarantee great amount of supporting force without damaging the bridge by burying a high tension steel rod at an upper surface of the bridge. A method for lifting a slab(13) of a bridge(12) comprises the steps: forming a block out by digging a coping upper surface of the bridge until an inner steel exposes; installing at least two hollow steel pipes(40) on a block out surface to allow a nut(41) to direct upwards; returning the coping surface by pouring a non-contracted mortar on the blockout surface; inserting a high tension steel rod(50) into the hollow steel pipes to conform a bolt fixing groove to the nut; inserting a fixing bolt(55) from an upper part of the coping surface and adhering to the bolt fixing groove; installing an assembly steel bracket(70) at an end of the high tension steel rod; putting the assembly steel bracket on a jack supporting plate and balancing the jack supporting plate; and lifting the slab of the bridge by using an oil jack(30) placed on the jack supporting plate. |
