外包钢板混凝土桥墩在车辆碰撞下的动力响应研究

发布时间：2018-01-10 20:24

本文关键词：外包钢板混凝土桥墩在车辆碰撞下的动力响应研究　出处：《公路》2017年02期 　论文类型：期刊论文

【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。
[Abstract]:The dynamic performance model test of steel plate concrete pier columns under vehicle collision was carried out. The impact force time history, the acceleration and displacement response time history of bridge pier were collected during the impact process, and the speed of the bridge was analyzed and studied. The effect of vehicle mass and axial compression ratio on the dynamic response of steel plate concrete pier during impact is studied. The results show that the impact force is positively correlated with vehicle speed, vehicle mass and axial compression ratio. The acceleration and displacement response of the pier increase with the increase of the speed. The acceleration at the top of the pier may or may be smaller than the acceleration at the impact position, and the displacement at the top of the pier is always greater than the displacement at the impact site. The displacement of piers is approximately linear with the mass of the vehicle and decreases with the increase of the axial compression ratio. The results provide a data reference for the further study of the collision between the vehicle and the bridge and the anti-collision design of the bridge.
【作者单位】：北方工业大学土木工程学院;
【基金】：国家自然科学基金资助项目,项目编号51308035
【分类号】：U441.3;U443.22
【正文快照】： 2016-06-20近年来,国内外车辆撞击桥墩事故频频发生,不仅造成桥毁、人亡等惨剧,而且极易造成严重的交通堵塞,直接或间接地造成巨大的经济损失,已引起了桥梁工程界及社会各界的广泛关注,也成为土木工程防灾减灾领域的研究热点之一[1-8]。我国交通运输事业蓬勃发展,立交桥、高架

【相似文献】