兰州理工大学学报 ›› 2020, Vol. 46 ›› Issue (5): 137-143.

• 建筑科学 • 上一篇    下一篇

内衬空八边形钢管的混凝土组合柱耐撞击性能

张凯航1, 王蕊1, 赵晖1, 朱翔2   

  1. 1.太原理工大学 建筑与土木工程学院, 山西 太原 030024;
    2.山西大学 土木工程系, 山西 太原 030013
  • 收稿日期:2019-11-08 出版日期:2020-10-28 发布日期:2020-11-06
  • 通讯作者: 王蕊(1979-),女,山西太原人,博士,教授.
  • 作者简介:张凯航(1992-),男,山西太原人,硕士.
  • 基金资助:
    山西省优秀青年基金(201701D211006)

Performance of concrete composite columns with lining hollow octagon steel tube-reinforced on impact resistance

ZHANG Kai-hang1, WANG Rui1, ZHAO Hui1, ZHU Xiang2   

  1. 1. College Of Architecture and Civil Engineering, Taiyuan University of Technology, Taiyuan 030024, China;
    2. College of Architecture And Civil Engineering, Shanxi University, Taiyuan 030013, China
  • Received:2019-11-08 Online:2020-10-28 Published:2020-11-06

摘要: 为研究内衬空八边形钢管混凝土组合柱的耐撞击性能,利用无导轨落锤式撞击试验机进行内衬八边形钢管混凝土组合柱耐撞击试验研究.试验过程中采用力传感器、高速摄像机记录撞击全过程中构件的撞击力时程曲线和跨中位移时程曲线.试验中观察边界条件、撞击能量、轴压比和圆钢管壁厚等因素对组合柱破坏形态与能量耗散的影响规律.试验结果表明:外包钢筋混凝土可与空八边形钢管和钢管混凝土相互协调,共同工作;在承受撞击荷载时,撞击高度对试件耗能能力的影响最为显著,边界条件次之,轴压比影响较弱,圆钢管壁厚影响最弱.

关键词: 钢管混凝土, 组合柱, 能量耗散, 撞击性能, 破坏特征

Abstract: In order to study impact behaviors of the lining hollow octagon steel tube-reinforced concrete column, an experimental study on the impact resistance of the lining hollow octagon steel tube-reinforced concrete column without guideway was carried out by using a guideway falling weight impact testing machine. In the test process, the time history curve of impact force and displacement of specimens in the whole process of impact were recorded by using force sensor and high-speed camera. At the same time, the effects of boundary conditions, impact energy and axial pressure ratio on the failure pattern and energy dissipation of the steel tube-reinforced concrete column were also observed and investigated. Our tested results show that the outsourced reinforced concrete can work in coordination with hollow octagon steel pipe and steel pipe concrete. When bearing impact loading, the impact height has the most significant influence on the energy dissipation capacity of the specimen, followed by the boundary condition. The influence of axial compression ratio is weak, and the influence of the wall thickness of circular steel tube becomes the weakest.

Key words: concrete-filled steel tube, composite column, energy dissipation, impact performance, failure characteristics

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