桥梁结构抗爆安全评估研究进展

张宇 李国强 陈可鹏 陈艾荣

张宇, 李国强, 陈可鹏, 陈艾荣. 桥梁结构抗爆安全评估研究进展[J]. 爆炸与冲击, 2016, 36(1): 135-144. doi: 10.11883/1001-1455(2016)01-0135-10
引用本文: 张宇, 李国强, 陈可鹏, 陈艾荣. 桥梁结构抗爆安全评估研究进展[J]. 爆炸与冲击, 2016, 36(1): 135-144. doi: 10.11883/1001-1455(2016)01-0135-10
Zhang Yu, Li Guoqiang, Chen Kepeng, Chen Airong. Research advances of safety assessment of bridges under blast load[J]. Explosion And Shock Waves, 2016, 36(1): 135-144. doi: 10.11883/1001-1455(2016)01-0135-10
Citation: Zhang Yu, Li Guoqiang, Chen Kepeng, Chen Airong. Research advances of safety assessment of bridges under blast load[J]. Explosion And Shock Waves, 2016, 36(1): 135-144. doi: 10.11883/1001-1455(2016)01-0135-10

桥梁结构抗爆安全评估研究进展

doi: 10.11883/1001-1455(2016)01-0135-10
基金项目: 

国家自然科学基金青年基金项目 51508412

中国博士后基金项目 2014M551451

西安交通大学机械结构强度与振动国家重点实验室开放基金项目 SV2014-KF-17

详细信息
    作者简介:

    张宇(1983—),女,博士,讲师,zhangyu1983xinxin@163.com

  • 中图分类号: O383

Research advances of safety assessment of bridges under blast load

  • 摘要: 随着恐怖袭击和偶发爆炸事故造成的桥梁爆炸事故不断增多,桥梁结构抗爆安全问题越来越受到关注。本文中系统总结了桥梁结构抗爆安全评估的研究进展,分析桥墩、桥面、桥索和桥塔爆炸载荷作用下桥梁的理论简化方法和结构的动力响应,和桥梁的连续性、冗余性和鲁棒性对结构连续性倒塌的影响,通过对建筑和桥梁抗连续倒塌的研究现状及相关规范的归纳,明确了桥梁连续倒塌的特性及现行桥梁设计方法的缺陷。而后,就承载能力评估、耐久性评估和适用性评估等桥梁安全评估问题的研究进展进行了梳理,并对桥梁爆破拆除技术和近地下爆炸对桥梁产生的响应和破坏作用进行分析,并针对当前研究的现状,分别提出建议。
  • 图  1  桥墩爆炸下荷载确定方法[13]

    Figure  1.  Load determination methods for bridge pier under blast load[13]

    图  2  桥板下爆炸示意图[17]

    Figure  2.  Response of bridge under blast load[17]

    图  3  桥墩在爆炸与地震作用下破坏模式对比[21]

    Figure  3.  Contrast of pier damage models of pier under blast load and earthquake[21]

    图  4  不同动载下桥墩的弯矩图[13]

    Figure  4.  Diagram of pier bending moment under various dynamic loads[13]

    图  5  梁响应阶段[28]

    Figure  5.  Beam response stage[28]

    图  6  梁端至墩、台帽或盖梁边缘的最小距离

    Figure  6.  Minimum distance from beam end to pier, cap and coping edges

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  • 收稿日期:  2014-01-02
  • 修回日期:  2014-03-10
  • 刊出日期:  2016-01-25

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