桥墩防汽车撞击计算分析方法和防撞方案探讨

Discussion on Calculation and Analysis Methods and Anti-collision Scheme for Anti-collision of Bridge Piers

桥墩防撞计算宜考虑实际存在的汽车撞击风险,根据桥下实际通行车辆的重量和汽车速度,可参考《城市人行天桥与人行地道技术规范》(CJJ 69-95)提供的估算公式进行汽车撞击力估算,与《公路桥涵设计通用规范》(JTG D60—2015)规定的撞击力进行包络设计。防护方案宜结合工程实际情况因地制宜选用隔离式防护装置和附着式柔性防护装置,建议设计时遵循以人为本的原则考虑对撞击车辆和驾乘人员的保护。

The actual vehicle impact risk should be considered in the anti-collision calculation of bridge piers. According to the actual vehicle weight and vehicle speed under the bridge, the vehicle impact force can be estimated with reference to the estimation formula provided in the Technical Code for Urban Pedestrian Overpasses and Pedestrian Underpasses(CJJ 69-95), and the envelope design can be carried out with the impact force specified in the General Code for Design of Highway Bridges and Culverts(JTG D60—2015). In the protection scheme, the isolation type protective device and attached flexible protective device should be selected according to local conditions in combination with the actual situation of the project. It is recommended to follow the principle of people-oriented in the design and consider the protection of the impact vehicles and drivers.