冲击波和预制破片联合作用下H型钢柱抗爆设计
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摘要
为分析近距爆炸冲击波和预制破片联合载荷作用下H型钢柱的抗爆性能,基于非线性有限元软件ANSYS-LSDYNA,采用参数化研究方法,在圆柱型炸药外侧设置预制破片,对钢柱的截面尺寸、炸药的比例距离和钢柱的防护加固进行定量研究。研究结果表明:在相同用钢量下,为提高钢柱的抗爆能力,应尽量选择翼缘宽度小于等于腹板高度的截面类型;腹板厚度较厚时,钢柱不易发生屈曲失稳破坏;较小的高厚比和宽厚比有利于提升钢柱的抗爆性能;在比例距离相同时,炸药量对钢柱的抗爆性能影响较大,在钢柱抗爆设计时应将炸药量作为主要考虑因素;在炸药量相同时,随着距离因素R增加,钢柱的破坏程度逐渐降低,但最终破坏作用呈现趋同的效果;在距离因素R相同时,随着炸药量的增加,钢柱的破坏程度逐渐加重,且破坏效果具有加速破坏效应。外粘CFRP材料对H型钢柱防护效果良好,从经济性考虑,黏结1层CFRP板就能起到很好的防护效果。
In order to analyze the antiknock performance of H-section steel column under the combined blasting of near explosion and prefabricated fragments, the section size, the proportional distance and the reinforcement of steel column were studied by using parametric research methods based on the ANSYS/LS-DYNA. The results show that with the same amount of steel, the flange width less than or equal to the height of the web section type should be chosen. Thicker web is not prone to buckling destabilization damage. Smaller ratios of height to thickness and width to thickness are beneficial to steel column. When the proportional distance is the same, the amount of explosives has a great influence on the antiknock performance of steel column. When the amount of explosives is the same, with the increase of the distance factor R, the destruction degree of the steel column gradually decreases, and the destructive effect shows a convergent effect. When the distance factor R is the same, as the amount of explosives increases, the damage degree of the steel column gradually aggravates, and the destructive has superposition enhancement effect. External sticky CFRP material has good protective effect.
In order to analyze the antiknock performance of H-section steel column under the combined blasting of near explosion and prefabricated fragments, the section size, the proportional distance and the reinforcement of steel column were studied by using parametric research methods based on the ANSYS/LS-DYNA. The results show that with the same amount of steel, the flange width less than or equal to the height of the web section type should be chosen. Thicker web is not prone to buckling destabilization damage. Smaller ratios of height to thickness and width to thickness are beneficial to steel column. When the proportional distance is the same, the amount of explosives has a great influence on the antiknock performance of steel column. When the amount of explosives is the same, with the increase of the distance factor R, the destruction degree of the steel column gradually decreases, and the destructive effect shows a convergent effect. When the distance factor R is the same, as the amount of explosives increases, the damage degree of the steel column gradually aggravates, and the destructive has superposition enhancement effect. External sticky CFRP material has good protective effect.
引文
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[2]张秀华,张春巍,段忠东.爆炸荷载作用下钢框架柱冲击响应与破坏模式的数值模拟[J].沈阳建筑大学学报(自然科学版),2009,25(4):656-662.ZHANG Xiuhua,ZHANG Chunwei,DUAN Zhongdong.Numerical simulation of shock response and failure mode of steel frame columns under explosive load[J].Journal of Shenyang Jianzhu University(Natural Science),2009,25(4):656-662.
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[10]侯海量,张成亮,李茂,等.冲击波和高速破片联合作用下夹芯复合舱壁结构的毁伤特性[J].爆炸与冲击,2015,35(1):116-123.HOU Hailiang,ZHANG Chengliang,LI Mao,et al.Damage characterristics of sandwich bulkhead under the impact of shock and high-velocity fragments[J].Explosions and Shocks,2015,35(1):116-123.
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[12]GB T-11263-2010,热轧H型钢和剖分T型钢[S].GB T-11263-2010,Hot-rolled H-beam and split T-shaped steel[S].
[13]师燕超.爆炸荷载作用下钢筋混凝土结构的动态响应行为与损伤破坏机理[D].天津:天津大学建筑工程学院,2008:61-62.SHI Yanchao.Dynamic response behavior and damage mechanism of reinforced concrete structures under explosive load[D].Tianjin:Tianjin University.School of Civil Engineering,2008:61-62.
[14]CHUNG K Y S,LANGDON G S,NURICK G N,et al.Response of V-shape plates to localized blast load experiments and numerical simulation[J].International Journal of Impact Engineering,2012,46:97-109.
[15]田力,张浩.冲击波和预制破片复合作用下H型钢柱损伤效应分析[J].同济大学学报(自然科学版),2018,46(3):289-299.TAIN Li,ZHANG Hao.Damage effect of H-section steel columes subjected to synergistic effects of blast and prefabricated fragments[J].Journal of Tongji University(Natural Science),2018,46(3):289-299.
[16]段新峰,呈远胜,张攀,等.冲击波和破片联合作用下I型夹层板毁伤仿真[J].中国舰船研究,2015,10(6):45-69.DENG Xinfeng,CHEN Yuansheng,ZHANG Pan,et al.Damage simulation of type I sandwich plate under shock wave and fragment joint action[J].Chinese Journal of Ship Research,2015,10(6):45-69.
[17]张成亮.爆炸冲击波和高速破片联合作用效应及防护机理研究[D].武汉:海军工程大学舰船工程系,2013:7-10.ZHAGN Chengliang.Study on the combined effect and protection mechanism of explosive shock wave and high speed fragmentation[D].Wuhan:Naval Engineering University.Department of Naval Architecture Engineering,2013:7-10.
[18]冯武强,吴刚.高弹膜CFRP板加固钢梁的试验研究[C]//中国公路桥梁和结构工程分会学术会议论文集.北京:人民交通出版社,2008:1000-1007.FENG Wuqiang,WU Gang.Experimental study on steel beams reinforced by CFRP plate with high elasticity[C]//Chinese Highway Bridge and Structural Engineering Branch Conference Proceedings.Beijing:People’s Transport Press,2008:1000-1007.
[2]张秀华,张春巍,段忠东.爆炸荷载作用下钢框架柱冲击响应与破坏模式的数值模拟[J].沈阳建筑大学学报(自然科学版),2009,25(4):656-662.ZHANG Xiuhua,ZHANG Chunwei,DUAN Zhongdong.Numerical simulation of shock response and failure mode of steel frame columns under explosive load[J].Journal of Shenyang Jianzhu University(Natural Science),2009,25(4):656-662.
[3]丁阳,宋骁然,师燕超.爆炸荷载作用下基于抗剪承载力的钢柱失效准则[J].北京工业大学学报,2014,40(8):1151-1162.DING Yang,SONG Xiaoran,SHI Yanchao.Failure criterion of steel columes under blast load based on maximum shear reisisrance[J].Journal of Beijing University of Technology,2014,40(8):1151-1162.
[4]LIU J H,JONES N.Experimental investigation of clamped beams struck transversely by a mass[J].International Journal of Impact Engineering,1987,6:303-335.
[5]LI Q M,JONES N.Response and failure of a double-shear beam subjected to mass impact[J].International Journal of Solids and Structures,2002,39:1919-1947.
[6]王蕊,裴畅.热轧H型钢梁在侧向冲击荷载作用下动力响应的参数分析[J].工程力学,2013,30(增刊):258-262.WANG Rui,FEI Chang.Parametric analysis of dynamic response of hot rolled H beam subjected to lateral impact load[J].Engineering Mechanics,2013,30(suppl):258-262.
[7]孔祥韶,吴卫国,李晓彬,等.圆柱形战斗部破片速度及等效装药特性研究[J].振动与冲击,2013,32(9):146-149.KONG Xiangshao,WU Weiguo,LI Xiaobin,et al.Fragment Velocity and equivalent bare charge characteristic of cylindrical warhead[J].Journal of Vibration and Shock,2013,32(9):146-149.
[8]吕勇,石全,钱芳,等.不同时序破片和冲击波在对天线的复合毁伤分析[J].火力与指挥控制,2014,39(3):128-132.LüYong,SHI Quan,QIAN Fang,et al.Analysis of composite damage of antennas with different chronological fragments and shock waves[J].Fire Control and Command Control,2014,39(3):128-132.
[9]陈力,方秦,章毅,等.爆炸波与破片联合作用下结构的局部与整体破坏效应分析[J].武汉理工大学学报,2013,35(2):124-129.CHEN Li,FANG Qin,ZHANG Yi,et al.Analysis of local and overall structural failures subjected to blast wave and fragment[J].Journal of Wuhan Polytechnic University,2013,35(2):124-129.
[10]侯海量,张成亮,李茂,等.冲击波和高速破片联合作用下夹芯复合舱壁结构的毁伤特性[J].爆炸与冲击,2015,35(1):116-123.HOU Hailiang,ZHANG Chengliang,LI Mao,et al.Damage characterristics of sandwich bulkhead under the impact of shock and high-velocity fragments[J].Explosions and Shocks,2015,35(1):116-123.
[11]张成亮,朱锡,侯海量,等.爆炸冲击波与高速破片对夹层结构的联合毁伤效应试验研究[J].振动与冲击,2014(15):184-188.ZHANG Chengliang,ZHU Xi,HOU Hailiang,et al.Experimental study on joint damage effect of blast shock wave and high velocity fragment on sandwich structure[J].Journal of Vibration and Shock,2014(15):184-188.
[12]GB T-11263-2010,热轧H型钢和剖分T型钢[S].GB T-11263-2010,Hot-rolled H-beam and split T-shaped steel[S].
[13]师燕超.爆炸荷载作用下钢筋混凝土结构的动态响应行为与损伤破坏机理[D].天津:天津大学建筑工程学院,2008:61-62.SHI Yanchao.Dynamic response behavior and damage mechanism of reinforced concrete structures under explosive load[D].Tianjin:Tianjin University.School of Civil Engineering,2008:61-62.
[14]CHUNG K Y S,LANGDON G S,NURICK G N,et al.Response of V-shape plates to localized blast load experiments and numerical simulation[J].International Journal of Impact Engineering,2012,46:97-109.
[15]田力,张浩.冲击波和预制破片复合作用下H型钢柱损伤效应分析[J].同济大学学报(自然科学版),2018,46(3):289-299.TAIN Li,ZHANG Hao.Damage effect of H-section steel columes subjected to synergistic effects of blast and prefabricated fragments[J].Journal of Tongji University(Natural Science),2018,46(3):289-299.
[16]段新峰,呈远胜,张攀,等.冲击波和破片联合作用下I型夹层板毁伤仿真[J].中国舰船研究,2015,10(6):45-69.DENG Xinfeng,CHEN Yuansheng,ZHANG Pan,et al.Damage simulation of type I sandwich plate under shock wave and fragment joint action[J].Chinese Journal of Ship Research,2015,10(6):45-69.
[17]张成亮.爆炸冲击波和高速破片联合作用效应及防护机理研究[D].武汉:海军工程大学舰船工程系,2013:7-10.ZHAGN Chengliang.Study on the combined effect and protection mechanism of explosive shock wave and high speed fragmentation[D].Wuhan:Naval Engineering University.Department of Naval Architecture Engineering,2013:7-10.
[18]冯武强,吴刚.高弹膜CFRP板加固钢梁的试验研究[C]//中国公路桥梁和结构工程分会学术会议论文集.北京:人民交通出版社,2008:1000-1007.FENG Wuqiang,WU Gang.Experimental study on steel beams reinforced by CFRP plate with high elasticity[C]//Chinese Highway Bridge and Structural Engineering Branch Conference Proceedings.Beijing:People’s Transport Press,2008:1000-1007.