爆炸冲击荷载作用下高压输电塔钢管构件抗爆性能试验研究
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摘要
钢管材料易采购、易加工、易安装、构造体型较好,迎风体型系数较小,因而在高压输电塔结构中得以推广使用,研究爆炸冲击荷载作用下钢管构件的抗爆性能具有重要的理论意义和工程实用价值。通过各比例距离下静爆试验,研究爆炸冲击荷载作用下钢管构件迎爆面、背爆面各测试点的超压数值,进一步掌握爆炸冲击波的传播规律和对钢管构件的作用特点。临近场爆炸时,钢管构件中部呈现出撕裂、局部屈曲的破坏形态;近场爆炸时,钢管构件主要受爆炸冲击荷载第一个波阵面正压的影响;远场爆炸时,钢管构件除受第一个波阵面影响外,地面反射的冲击波也对构件产生影响。
Steel tube member has advantages such as easy to purchase,easy to process,easy to install,better structural shape and so on. Therefore,it has been widely applied in the high-voltage transmission tower structures. It is of great theoretical significance and practical value to study the anti-explosion performance of steel tube members under blast load.In the paper,through the static explosion test of different proportional distances,overpressure values of the front and the back surface of the steel tubes of each test point were studied to further understand the propagation laws of blast wave and the characteristics of steel tube members under blast load. In quite near field explosion,the central part of the steel tube showed the tearing and local buckling failure modes. In the near field explosion,the steel tube member was mainly affected by the positive pressure of the first wavefront of the blast load. In the far field explosion,besides the first wavefront,the shock wave reflected by the ground also affected the steel tube members.
Steel tube member has advantages such as easy to purchase,easy to process,easy to install,better structural shape and so on. Therefore,it has been widely applied in the high-voltage transmission tower structures. It is of great theoretical significance and practical value to study the anti-explosion performance of steel tube members under blast load.In the paper,through the static explosion test of different proportional distances,overpressure values of the front and the back surface of the steel tubes of each test point were studied to further understand the propagation laws of blast wave and the characteristics of steel tube members under blast load. In quite near field explosion,the central part of the steel tube showed the tearing and local buckling failure modes. In the near field explosion,the steel tube member was mainly affected by the positive pressure of the first wavefront of the blast load. In the far field explosion,besides the first wavefront,the shock wave reflected by the ground also affected the steel tube members.
引文
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[12]潘金龙,周甲佳,罗敏.爆炸荷载下FRP加固双向板动力响应数值模拟[J].解放军理工大学学报(自然科学版),2011,12(6):643-648.
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[15]SMITH P D,ROSE T.A Blast Wave Propagation in City Streets:An Overview[J].Progress in Structural Engineering and Materials,2006,8(1):16-28.
[16]LUCCIONI B,AMBROSINI D,DANESI,R.Blast Load Assessment Using Hydrocodes[J].Engineering Structures,2006,28(12):1736-1744.
[17]王肇民,马人乐.塔式结构[M].北京:科学出版社,2004.
[2]SUCUOGLU H,CITIPITIOGLU E,ALTIN S.Resistance Mechanisms in RC Building Frames Subjected to Column Failure[J].Journal of Structural Engineering,1994,120(3):765-782.
[3]WILLIAMS M S,LOK T S.Structural Assessment of Blast Damaged Buildings[C]//Structures Under Shock and Impact VI:Proceedings of International Conference on Structures Under Shock and Impact.England:2000.
[4]LUCCIONI B M,AMBROSINI R D,Danesi R F.Analysis of Building Collapse Under Blast Loads[J].Engineering Structures,2004,26:63-71.
[5]RUWAN J,DAVID P T,NIMAL J P,et al.Blast and Residual Capacity Analysis of Reinforced Concrete Framed Buildings[J].Engineering Structures,2011,33:3483-3495.
[6]PANDEY A K.Non-Linear Response of Reinforced Concrete Containment Structure Under Blast Loading[J].Nuclear Engineering and Design,2006,236(9):993-1002.
[7]阎石,王积慧,王丹,等.爆炸荷载作用下框架结构的连续倒塌机理分析[J].工程力学,2009,26(增刊1):119-123.
[8]申祖武,龚敏,王天运,等.汽车炸弹爆炸冲击波作用下建筑物的动力响应分析[J].振动与冲击,2008,27(8):165-168,186.
[9]LI Z X,SHI Y C.Methods for Progressive Collapse Analysis of Building Structures Under Blast and Impact Loads[J].Transactions of Tianjin University,2008,14(5):329-339.
[10]师燕超,李忠献,郝洪.爆炸荷载作用下钢筋混凝土框架结构的连续倒塌分析[J].解放军理工大学学报(自然科学版),2007,8(6):652-658.
[11]宋拓,吕令毅.爆炸冲击对多层钢框架连续倒塌性能的影响[J].东南大学学报(自然科学版),2011,41(6):1247-1252.
[12]潘金龙,周甲佳,罗敏.爆炸荷载下FRP加固双向板动力响应数值模拟[J].解放军理工大学学报(自然科学版),2011,12(6):643-648.
[13]冯红波.爆炸荷载作用下钢管混凝土柱的动力响应研究[D].西安:长安大学,2008.
[14]SMITH P D,MAYS G C,ROSE T A,et al.Small Scale Models of Complex Geometry for Blast Overpressure Assessment[J].International Journal of Impact Engineering,1992,12(3):345-360.
[15]SMITH P D,ROSE T.A Blast Wave Propagation in City Streets:An Overview[J].Progress in Structural Engineering and Materials,2006,8(1):16-28.
[16]LUCCIONI B,AMBROSINI D,DANESI,R.Blast Load Assessment Using Hydrocodes[J].Engineering Structures,2006,28(12):1736-1744.
[17]王肇民,马人乐.塔式结构[M].北京:科学出版社,2004.