外包钢板混凝土桥墩在车辆碰撞下的动力响应研究  

Dynamic Response of Outsourcing Steel Plate Reinforced Concrete Pier under Vehicle Collision

作　　者：韩艳[1] 范东振 刘山[1] 

机构地区：[1]北方工业大学土木工程学院,北京市100144

出　　处：《公路》2017年第2期70-76,共7页Highway

基　　金：国家自然科学基金资助项目;项目编号51308035

摘　　要：进行了外包钢板混凝土墩柱在车辆碰撞作用下的动力性能模型试验,通过采集撞击过程中的撞击力时程、桥墩的加速度及位移响应时程,分析研究了车速、车辆质量、轴压比等对撞击过程中外包钢板混凝土桥墩动力响应的影响。研究结果表明,撞击力的大小与车速、车辆质量、轴压比均成正相关关系;桥墩的加速度与位移响应均随车速提高而增大,桥墩顶部的加速度可能大于也可能小于撞击位置处的加速度,而桥墩顶部的位移总是大于撞击处的位移;桥墩位移与车辆质量之间近似成线性关系,随轴压比增大而减小。研究结果为进一步研究实际车辆与桥梁撞击及桥梁防撞设计提供了数据参考。Dynamic model test of vehicle collision on the outsourcing steel concrete piers are conducted. Through data collection including the impact forces, pier acceleration and displacement response time history during the impact process, the influence of vehicle speed, vehicle mass and axial compression ratio on the dynamic response of outsourcing concrete pier to vehicle collision are analyzed. It is shown that the impact force has a positive correlation to vehicle speed, vehicle mass and axial compression ratio- acceleration and displacement response of bridge piers both increase with the vehicle speed increasing, the acceleration of the pier top might be larger or smaller than that of the impact location, whereas the pier top displacement is always greater than that of the impact position; the pier displacement is approximately linear to vehicle mass and decreases with the axial compression ratio increasing. The study results provide data reference for further studying the actual vehicle bumping on bridge and bridge anti collision design.

关 键 词：撞击力 桥墩 外包钢板 车辆 动力响应 

分 类 号：U445.72[建筑科学—桥梁与隧道工程]