某上跨铁路立交桥防撞护栏维修加固设计

Design of Maintenance Reinforcement of Crash Barrier for Interchange Overpassing Railway

随着时间的推移,较早修建的公路上跨铁路立交桥的防撞护栏已出现损坏;同时现行规范对交通安全要求的提高,既有防撞护栏已不满足现行规范要求,亟需对立交桥防撞护栏进行维修加固。维修加固过程中为保证桥下既有铁路的运营安全,需对防撞护栏进行专项的维修加固设计,从防撞护栏结构本身及维修加固防撞护栏施工时采用的挂篮支撑防护体系进行了详细的检算和设计。该维修加固设计已顺利实施,并保证了桥下既有铁路的运营安全。

As time goes on,the crash barriers of early built highway interchanges overpassing railway have been damaged.At the same time,owing to the improvement of traffic safety requirements in the current standard,the existing crash barriers have not met the current standard requirements.It is necessary to maintain and reinforce the crash barriers of interchanges.In order to ensure the operation safety of the existing railways under the interchanges during the maintenance and reinforcement,the crash barriers are required to carry out the special maintenance and reinforcement design.The structure of crash barrier and the supporting protection system of form traveler used in the maintenance and reinforcement of crash barrier are checked and designed in detail.This maintenance and reinforcement design has been smoothly implemented,and has guaranteed the operation safety of the existing railways.