冲击破坏的桥梁下部结构应急抢险修复设计

某山区高速公路桥梁由于岸坡滚石碰撞,下部结构发生脆性破坏,交通受阻。首先提出临时加固方案,对下部结构进行临时处理后及时恢复交通;然后进行永久性加固,确保结构在设计使用年限内的安全运营,为同类山区桥梁修复设计提供参考。

Design on Emergency Rescue and Repair of Bridge Substructure Damaged by Impact

The brittle failure occurs in the substructure of a mountain expressway bridge because of rolling stone collision on the bank slope, which causes the traffic blocked. Firstly, the temporary reinforcement scheme is proposed to restore the traffic in time after the temporary treatment of the substructure. Then, the permanent reinforcement is carried out to ensure the safe operation of the structure within the designed service life, which provides the reference for the repair design of bridges in similar mountainous areas.