侧向撞击荷载作用下内八边形空心钢筋混凝土柱的动力响应

陈亮廷 王蕊

陈亮廷, 王蕊. 侧向撞击荷载作用下内八边形空心钢筋混凝土柱的动力响应[J]. 爆炸与冲击, 2019, 39(7): 075103. doi: 10.11883/bzycj-2018-0119
引用本文: 陈亮廷, 王蕊. 侧向撞击荷载作用下内八边形空心钢筋混凝土柱的动力响应[J]. 爆炸与冲击, 2019, 39(7): 075103. doi: 10.11883/bzycj-2018-0119
CHEN Liangting, WANG Rui. Dynamic response of inner octagonal hollow reinforced concrete columns under lateral impact loading[J]. Explosion And Shock Waves, 2019, 39(7): 075103. doi: 10.11883/bzycj-2018-0119
Citation: CHEN Liangting, WANG Rui. Dynamic response of inner octagonal hollow reinforced concrete columns under lateral impact loading[J]. Explosion And Shock Waves, 2019, 39(7): 075103. doi: 10.11883/bzycj-2018-0119

侧向撞击荷载作用下内八边形空心钢筋混凝土柱的动力响应

doi: 10.11883/bzycj-2018-0119
基金项目: 山西省应用基础研究项目(201701D211006));山西省高等学校科技创新项目(2017130)
详细信息
    作者简介:

    陈亮廷(1992- ),男,硕士研究生,2814365559@qq.com

    通讯作者:

    王 蕊(1979- ),女,教授,wangrui@tyut.edu.cn

  • 中图分类号: O389; TU375.3

Dynamic response of inner octagonal hollow reinforced concrete columns under lateral impact loading

  • 摘要: 相比于实心钢筋混凝土柱,空心钢筋混凝土柱具有自重轻和截面扩展好等优点,被广泛地用作桥墩,由此其不可避免地会受到船舶的撞击。本文中进行6根内八边形空心钢筋混凝土柱和4根内衬八边形钢管空心钢筋混凝土柱的动力响应的实验。在实验中记录了构件破坏形态、撞击力时程曲线和跨中位移时程曲线,并从撞击高度、边界条件和钢板厚度等方面分析了构件的耐撞性能。结果表明:内八边形钢筋混凝土柱和内衬八边形钢管空心钢筋混凝土柱在撞击荷载作用下的破坏形态主要分为两种破坏类型,分别为局部型破坏和整体型破坏;撞击高度越大构件破坏越严重;两端固定对构件的耐撞击性能有提升作用;钢管厚度对构件的耐撞击性能有较明显的提升作用。
  • 图  1  空心混凝土柱

    Figure  1.  Hollow concrete

    图  2  落锤冲击试验装置

    Figure  2.  Drop-weight impact test setup

    图  3  试验装置示意图

    Figure  3.  Schematic illustration of testing setup

    图  4  内八边形空心钢筋混凝土柱

    Figure  4.  Inner octagonal hollow reinforced concrete column

    图  5  内衬八边形钢管空心钢筋混凝土柱

    Figure  5.  Inner octagonal hollow steel tube reinforced concrete column

    图  6  试验后构件破坏形态

    Figure  6.  Failure mode of tested specimens

    图  7  构件破坏简化图

    Figure  7.  Illustration of the failure of specimen

    图  8  撞击力时程曲线

    Figure  8.  Force versus time curves in impacts

    图  9  跨中位移时程曲线

    Figure  9.  Trans-middle displacement versus time curves

    图  10  冲击能量对位移的影响

    Figure  10.  Influence of impact energy on displacement

    表  1  落锤参数

    Table  1.   Parameters of drop-weight

    名称 直径/mm 高度/mm 质量/kg
    锤体 490 486 719.43
    锤头顶部 490 150 221.20
    冲击力传感器 300 150 82.90
    锤头底部 450 100 124.37
    下载: 导出CSV

    表  2  试件材料几何尺寸和性质

    Table  2.   Specimen geometry and material properties

    名称直径/mm屈服强度/MPa极限强度/MPa壁厚/mm
    钢管 304.0 457.0 2.00
    钢管 304.0 457.0 3.91
    纵筋 15.6 455.5 641.6
    箍筋 7.7 475.3 670.0
    下载: 导出CSV

    表  3  试件编号和试验结果

    Table  3.   Experimental results

    试件编号冲击高度/mm冲击能量/J力峰值/MN残余挠度/mm跨中底部实验前高度/mm跨中底部实验后高度/mm
    FF-2 2 000 2.25×104 25.56 9 400 391
    FF-5 5 001 5.63×104 67.00 40 398 358
    FS-2 2 000 2.25×104 12.69 6 398 392
    FS-5 4 999 5.63×104 17.82 50 394 347
    SS-2 2 001 2.25×104 12.33 11 400 389
    SS-5 5 002 5.63×104 31.67 52 397 345
    TFF-2 2 001 2.25×104 10.53 6 398 392
    TFF-5 5 000 5.63×104 16.46 29 397 368
    RSS-2 2 001 2.25×104 13.06 7 397 390
    RSS-5 5 000 5.63×104 29.61 37 397 360
     注:FF、FS、SS 分别代表两端固定、一端固定一端简支以及两端简支;数字 2 和 5 分别表示撞击高度(H)为 2 m 和 5 m;T 和 R 分别表示钢管厚度(T)为 3.91 mm 和 2 mm;FS5 表示试件一端固定一端简支,冲击高度为 5 m 的工况;TFF5 表示两端固支,钢管厚度为 3.91 mm,冲击高度为 5 m 的工况。
    下载: 导出CSV
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出版历程
  • 收稿日期:  2018-04-11
  • 修回日期:  2018-09-17
  • 网络出版日期:  2019-06-25
  • 刊出日期:  2019-07-01

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