周宏元,张雪健,王小娟,周后湛

• 1:北京工业大学城市与工程安全减灾教育部重点实验室
• 2:北京理工大学爆炸科学与技术国家重点实验室

摘要(Abstract)：

为研究挂板对桥墩在爆炸荷载作用下的防护性能,利用ANSYS/LS-DYNA建立钢筋混凝土板爆炸数值模型并验证其有效性,对有无挂板防护空心截面桥墩数值模型在爆炸下的响应与破坏进行分析比较,通过观察应力波的传播过程、桥墩的破坏形态以及背爆面位移,进一步讨论挂板面板厚度、芯层密度及芯层厚度等关键参数对挂板爆炸防护效果的影响。研究表明:安装挂板可显著减轻桥墩在爆炸荷载下的损伤;当挂板面板厚度从1 cm增加到3 cm、芯层厚度从10 cm增加到30 cm,桥墩背爆面位移显著降低;在一定范围内,挂板防护性能随芯层密度的增大而提高,对轻质挂板应用于桥墩爆炸防护具有一定指导意义。

关键词(KeyWords)： 挂板;桥墩;爆炸荷载;抗爆性能

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(51808017、51778028);; 北京理工大学爆炸科学与技术国家重点实验室开放课题(KFJJ20-02M);; 北京市教委科技计划一般项目(KM201810005019)

作者(Author): 周宏元,张雪健,王小娟,周后湛

参考文献(References)：

• [1] THIAGARAJAN G,KADAMBI A V,ROBERT S,et al.Experimental and finite element analysis of doubly reinforced concrete slabs subjected to blast loads[J].Journal of Bridge Engineering,2010,16:63-71.
• [2] 邱文白.RC矩形空心截面桥墩柱抗爆性能研究[D].长沙：国防科学技术大学，2016:22-48.QIU W B.Research on the resistance of RC piers with rectangular hollow section subjected to blast loading[D].Changsha:National University of Defense Technology,2016:22-48.(in Chinese)
• [3] JIANG X,KOLSTEIN M H,BIJLAARD F S K.Experimental and numerical study on mechanical behavior of an adhesively-bonded joint of FRP-steel composite bridge under shear loading[J].Composite Structures,2014,108:387-399.
• [4] HAN L H,HUANG H,ZHAO X L.Analytical behaviour of concrete-filled double skin steel tubular(CFDST) beam-columns under cyclic loading[J].Thin-walled Structures,2009,47(6):668-680.
• [5] 张旭红，王志华，赵隆茂.爆炸载荷作用下铝蜂窝夹芯板的动力响应[J].爆炸与冲击，2009,29(4):356-360.ZHANG X H,WANG Z H,ZHAO L M.Dynamic responses of sandwich plates with aluminum honeycomb cores subjected to blast loading[J].Explosion and Shock Waves,2009,29(4):356-360.(in Chinese)
• [6] ZHU F,ZHAO L M,LU G X,et al.Structural response and energy absorption of sandwich panels with an aluminum foam core under blast loading[J].Advanced Engineering Materials,2008,11:525 536.
• [7] FOGLAR M,KOVAR M.Conclusions from experimental testing of blast resistance of FRC and RC bridge decks[J].International Journal of Impact Engineering,2013,59:18-28.
• [8] LIU L,ZONG Z,TANG B,et al.Damage assessment of an RC pier under noncontact blast loading based on P-I curves[J].Shock and Vibration,2018,Article ID 9204036:1-12.
• [9] 杨欣，石少卿，程鹏飞.空气中TNT爆炸冲击波超压峰值的预测及数值计算[J].爆破，2008,25(1):112-117.YANG X,SHI S Q,CHENG P F.Forecast and simulation of peak overpressure of TNT explosion shock wave in the air[J].Blasting,2008,25(1):112-117.(in Chinese)
• [10] 韩强，周雨龙，杜修力.钢筋混凝土矩形空心桥墩抗震性能[J].工程力学，2015(3):28-40.HAN Q,ZHOU Y L,DU X L.Seismic performance of reinforced concrete rectangular hollow bridge columns[J].Engineering Mechanics.2015(3):28-40.(in Chinese)
• [11] GB 50010—2010 混凝土结构设计规范[S].北京：中国建筑工业出版社，2011.GB 50010—2010 Code for design of concrete structures[S].Beijing:China Architecture and Building Press,2011.(in Chinese)
• [12] ZHOU H Y,ZHANG X J,WANG X J.et al.Response of aluminum honeycombs filled with foam concrete subjected to quasi-static and dynamic compression[J].Composite Structures,2020,239:1-11.