摘要
对6根不同截面尺寸的支座可拆卸式钢管混凝土防撞柱进行水平撞击试验,采集了撞击力、柱身侧向位移和动态高速撞击视频;基于考虑钢材和混凝土应变率效应及材料之间的接触关系建立了可拆卸式防撞柱在水平撞击作用下的简化数值模型,计算结果与试验结果对比表明,简化数值模型可以很好模拟刚体撞击过程;采用有效数值模型对可拆卸式防撞柱进行了参数分析,基于参数分析结果对可拆卸式防撞柱设计方案进行了优化。
Six Detachable Anti-ram Bollards(DAB) with different section sizes are tested collected impact force, lateral displacement and dynamic impact video. And the simplified numerical model is established considering the contact relationship and the effect of strain rate between steel tube and concrete. Compared the calculation results and experimental results, it is shown that the simplified numerical model is in good agreement with the experimental results. Then, the influences of various parameters that can influence the impact resistance of the detachable anti-collision column are discussed and the design scheme of the detachable anti-collision column is put forward.
作者
盛文武
王银
杜咏
Sheng Wenwu;Wang Yin;Du Yong(Nanjing Public Project Construction Center,Nanjing 210019,China;School of Civil Engineering and Architecture,University of Jinan,Jinan 250022,China;College of Civil Engineering,Nanjing Technology University,Nanjing 211816,China)
出处
《山西建筑》
2023年第5期1-5,10,共6页
Shanxi Architecture
基金
国家自然科学基金面上项目:爆炸荷载作用下泡沫混凝土宏细观损伤破坏及消波机制研究,2022-01-01至2025-12-31(52178515)。
关键词
可拆卸式防撞柱
钢管混凝土
水平撞击
有限元模型
抗冲击性能
detachable anti-ram bollard
concrete-filled steel tube
horizontal impact
numerical model
impact resistance
