外包钢板加固钢筋混凝土柱抗爆性能试验研究
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摘要
为研究外包钢板加固钢筋混凝土柱的抗爆性能,专门建立了能实现对柱轴向加载模拟的野外爆炸试验装置,完成了外包钢板加固钢筋混凝土柱与普通钢筋混凝土柱的抗爆性能对比试验,得到了不同试验条件下柱的宏观破坏现象、破坏模式及爆炸响应参数的时程变化曲线等大量试验结果。试验表明:采用钢板对普通钢筋混凝土柱进行抗爆加固,不仅可提高柱的抗爆承载力,而且由于外包钢板对钢筋混凝土产生的约束作用,改善了柱的延性,减轻了混凝土的破碎和飞散,从而大大提高了柱的抗爆性能。
To study blast resistance performance of reinforced concrete columns strengthened by steel plates,field explosion experiments device that can simulate axial loading of columns is specially developed. Contrast tests between blast-resistant experiments of RC columns with steel plates and RC columns are carried out. A great number of test results such as macro damage of columns,failure modes,as well as blast response parameters under different test conditions are obtained. Experimental results show that the RC columns with steel plates can not only enhance blast resistant capacity of columns,but also improve ductility of columns and mitigate fracture and dispersing of concrete because of the restriction of steel plates on reinforced concrete. Thereby,blast resistance performance of RC columns is substantially improved.
To study blast resistance performance of reinforced concrete columns strengthened by steel plates,field explosion experiments device that can simulate axial loading of columns is specially developed. Contrast tests between blast-resistant experiments of RC columns with steel plates and RC columns are carried out. A great number of test results such as macro damage of columns,failure modes,as well as blast response parameters under different test conditions are obtained. Experimental results show that the RC columns with steel plates can not only enhance blast resistant capacity of columns,but also improve ductility of columns and mitigate fracture and dispersing of concrete because of the restriction of steel plates on reinforced concrete. Thereby,blast resistance performance of RC columns is substantially improved.
引文
[1]钱七虎.反爆炸恐怖安全对策[M].北京:科学出版社,2005.
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[6]田志敏,章峻豪,江世永.钢板混凝土复合梁在爆炸荷载作用下的损伤评估研究[J].振动与冲击,2016,35(4):42-48.
[7]CUI J,SHI Y,LI Z X,et al.Failure analysis and damage assessment of RC columns under close-in explosions[J].Journal of Performance of Constructed Facilities,2015,29(5):B4015003.
[8]John E C,Kenneth B M,Joseph M M.Protective design for columns against close-in blast effects[C]//Structure Congress,Massa chusetts:Boston,2014.
[9]Alex M R,Brian U.Explosive testing and modeling of square tubular steel columns for near-field detonations[J].Journal of Constructional Steel Research,2014,101(10):290-303.
[10]李国强,瞿海雁.钢管混凝土柱抗爆性能试验研究[J].建筑结构学报,2013,34(12):69-76.
[11]Fujikura S,Bruneau M,Lopez-Garcla D.Experimental investigation of multi-hazard resistant bridge piers having concrete-filled steel tube under blast loading[J].Bridge Eng,2008,13(6):586-94.
[12]Bodriguez-nikl T,Lee C S,Hegemier G A.Experimental performance of concrete columns with composite plates under blast loading[J].Journal of Structural Engineering,2012,138(1):81-89.
[13]Serdar A,Ted K.Response of normal-strength and ultrahigh-performance fiber-reinforced concrete columns to idealized blast loads[J].Engineering Structures,2014,61(3):1-12.
该文曾在中国土木工程学会防护工程分会第十五次学术年会暨首届国防工程科技论坛交流,修改后在本刊正式发表。
[2]田志敏,张想柏,杜修力.防恐怖爆炸重要建筑物的概念设计[J].土木工程学报,2007,40(1):34-41.
[3]师燕超,李忠献.爆炸荷载作用下钢筋混凝土柱的动力响应与破坏模式[J].建筑结构学报,2008,29(4):112-117.
[4]伍俊,闫秋实.框架结构承重柱内爆炸作用下的破坏与损伤研究[J].防护工程,2011,33(5):24-29.
[5]冯红波,赵均海.爆炸荷载作用下钢管混凝土柱的有限元分析[J].解放军理工大学学报:自然科学版,2007,8(6):680-684.
[6]田志敏,章峻豪,江世永.钢板混凝土复合梁在爆炸荷载作用下的损伤评估研究[J].振动与冲击,2016,35(4):42-48.
[7]CUI J,SHI Y,LI Z X,et al.Failure analysis and damage assessment of RC columns under close-in explosions[J].Journal of Performance of Constructed Facilities,2015,29(5):B4015003.
[8]John E C,Kenneth B M,Joseph M M.Protective design for columns against close-in blast effects[C]//Structure Congress,Massa chusetts:Boston,2014.
[9]Alex M R,Brian U.Explosive testing and modeling of square tubular steel columns for near-field detonations[J].Journal of Constructional Steel Research,2014,101(10):290-303.
[10]李国强,瞿海雁.钢管混凝土柱抗爆性能试验研究[J].建筑结构学报,2013,34(12):69-76.
[11]Fujikura S,Bruneau M,Lopez-Garcla D.Experimental investigation of multi-hazard resistant bridge piers having concrete-filled steel tube under blast loading[J].Bridge Eng,2008,13(6):586-94.
[12]Bodriguez-nikl T,Lee C S,Hegemier G A.Experimental performance of concrete columns with composite plates under blast loading[J].Journal of Structural Engineering,2012,138(1):81-89.
[13]Serdar A,Ted K.Response of normal-strength and ultrahigh-performance fiber-reinforced concrete columns to idealized blast loads[J].Engineering Structures,2014,61(3):1-12.
该文曾在中国土木工程学会防护工程分会第十五次学术年会暨首届国防工程科技论坛交流,修改后在本刊正式发表。