砖墙抗爆炸冲击震动效应模型试验研究
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摘要
为研究砖墙在爆炸冲击震动作用下的破坏模式及阈值,据工程内砖墙实际情况建立简化的底部固定、周边无约束砖墙模型,在模拟爆炸震动冲击试验台上进行三方向单独作用的冲击试验,研究砖墙模型的动态响应及破坏时加速度峰值、作用时间。结果表明,遭水平向冲击时模型均表现为水平通缝破坏。破坏主要由受拉而非剪切所致。通过对试验结果分析,获得三个冲击方向独立作用下的破坏阈值。
In order to investigate the failure pattern and threshold value of masonry wall under blast shock vibration loads,according to the practical situation of masonry wall in engineering, simplified masonry wall models were established. Experiments under the shock loads acting seperately in three directions were carried out on a shock testing machine for simulating the blast. The dynamic responses of the masonry wall models under the action of shock and vibration as well as the peak values and operation time of acceleration at the moment of failure were investigated. The results show that,for the masonry wall with bottom fixed and all-around constraint unconfined under the load of horizontal shock,the failure displays the form of horizontal straight joint damage. The failure is mainly caused by tensile stress instead of shearing stress. The failure threshold value under the shock loads acting seperately in three directions was obtained by analysis on the experimental results.
引文
[1]杜义欣,刘晶波,伍俊,等.常规爆炸下地下结构的冲击震动环境[J].清华大学学报(自然科学版),2006,46(3):322-326.DU Yi-xin,LIU Jing-bo,WU Jun,et al.Blast shock and vibra-tion of underground structures with conventional weapon[J].Journal of Tsinghua Univ(Sci&Tech),2006,46(3):322-326.
    [2]严东晋,唐德高,钱七虎,等.基于VDV隔震标准的爆炸隔震系统研究[J].振动与冲击,2000,19(3):77-80.YAN Dong-jin,TANG De-gao,QIAN Qi-hu,et al.Study on isolation system for blast shock and vibration based on VDV criterion[J].Journal of Vibration and Shock,2000,19(3):77-80.
    [3]陈妙峰,周早生,唐德高.爆炸冲击下仪器抛离问题研究[J].振动与冲击,2004,23(2):108-110.CHEN Miao-feng,ZHOU Zao-sheng,TANG De-gao.Research on the instrument kick_off under blast shock[J].Journal of Vibration and Shock,2004,23(2):108-110.
    [4]雷真,周德源,张晖,等.玄武岩纤维加固震损砌体结构振动台试验研究[J].振动与冲击,2013,32(15):130-137.LEI Zhen,ZHOU De-yuan,ZHANG Hui,et al.Shaking table test on earthquake-damaged masonry structure strengthened with BFRP[J].Journal of Vibration and Shock,2013,32(15):130-137.
    [5]黄华,吕卫东,刘伯权.爆炸荷载作用下粘贴Polymer Sheet膜材砌体墙防护性能研究[J].振动与冲击,2013,32(19):131-138.HUANG Hua,LWei-dong,LIU Bo-quan.Protective performance of masonry walls strengthened with polymer sheet under explosive loading[J].Journal of Vibration and Shock,2013,32(19):131-138.
    [6]田玉滨,李朝,张春巍.爆炸荷载作用下配筋砌体结构的动力响应[J].爆炸与冲击,2012,32(6):658-662.TIAN Yu-bin,LI Zhao,ZHANG Chun-wei.Dynamic response of reinforced masonry structure under blast load[J].Explosion and Shock Waves,2012,32(6):658-662.
    [7]GB6722-2003,爆破安全规程[S].
    [8]Crandell F J.Ground vibration due to blasting and its effect upon structures[M].Boston:Boston Society of Civil Engineers,1949.
    [9]Langefors U,Kihlstrom B,Westerberg H.Ground vibrations in blasting[J].Water Power,1958,10:335-424.
    [10]Dowding C H,Fulthorpe C S,Langan R T.Simultaneous air blast and ground-motion response[J].Journal of the Structural Division,1982,108(11):2363-2378.
    [11]李伯松,贺永胜,韩乃仁,等.模拟爆炸震动的冲击试验机简介[J].爆炸与冲击,2002,22(1):79-82.LI Bo-song,HE Yong-sheng,HAN Nai-ren,et al.Brief introduction of shock testing machine for simulating blast vibration[J].Explosion and Shock Waves,2002,22(1):79-82.
    [12]黄维平,邬瑞锋,张前国.配重不足时的动力试验模型与原型相似关系问题的探讨[J].地震工程与工程振动,1994,14(4):64-70.HUANG Wei-ping,WU Rui-feng,ZHANG Qian-guo.Study on the analogy between scale models with less ballast and their prototypes under shaking table test[J].Earthquake Engineering and Engineering Vibration,1994,14(4):64-70.

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