钢管RPC短柱的抗轴向冲击性能
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摘要
基于Hopkinson压杆冲击试验和数值模拟分析,研究了钢管RPC构件对高应变速率冲击荷载的动力响应规律,获得了这种构件的承载力提高系数及构件中钢管与RPC芯柱对冲击动荷载的分配比例关系.
Because of good impact toughness and high load carrying capacity,RPC-filled steel tubular columns promise to be good blast-resistant and impact-resistant structural members.Experimental investigation for impact-resistant property of RPC-filled steel tubular columns is conducted in this paper.Dynamic response of the columns under axial impact loading is studied by means of numerical simulation method.Increase coefficient of load carrying capacity and ratio of load carrying capacity of steel tube to that of RPC core in the columns are obtained.
Because of good impact toughness and high load carrying capacity,RPC-filled steel tubular columns promise to be good blast-resistant and impact-resistant structural members.Experimental investigation for impact-resistant property of RPC-filled steel tubular columns is conducted in this paper.Dynamic response of the columns under axial impact loading is studied by means of numerical simulation method.Increase coefficient of load carrying capacity and ratio of load carrying capacity of steel tube to that of RPC core in the columns are obtained.
引文
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[2]田志敏,吴华杰,姜锡权,等.超高性能混凝土RPC的抗冲击压缩特性[J].解放军理工大学学报:自然科学版,2007,8(5):463-469.TIAN Zhi-min,WU Hua-jie,JIANG Xi-quan,et al.Ultra high performance concrete RPC under compressive impact loading[J].Journal of PLA University of Science and Technology:Natural Science Edition,2007,8(5):463-469.(in Chinese)
[3]卢辉.钢管混凝土动力性能研究新进展[J].世界地震工程,2007,23(4):119-128.LU Hui.New advances in the research on dynamic performance of concrete filled steel tube[J].World EarthquakeEngineering,2007,23(4):119-128.(in Chinese)
[4]田华,张素梅,郭兰慧.矩形钢管高强混凝土双向压弯构件截面强度[J].哈尔滨工业大学学报,2007,39(10):1520-1528.TIAN Hua,ZHANG Su-mei,GUO Lan-hui.Cross-sectional strength of high-strength concrete-filled RHS steel tubes subjectedto axial compression and bi-axial bending moment[J].Journal of Harbin Institute of Technolog,2007,39(10):1520-1528.(in Chinese)
[5]王蕊,李珠,任够平,等.钢管混凝土梁在侧向冲击荷载作用下动力响应的试验研究和数值模拟[J].土木工程学报,2007,40(10):34-40.WANG Rui,LI Zhu,REN Gou-ping,et al.Experimental study and numerical simulation of the dynamic response of concretefilled steel tubes under lateral impact load[J].China Civil Engineering Journal,2007,40(10):34-40.(in Chinese)
[6]任够平,刘斌,王瑞峰,等.钢管混凝土构件在侧向冲击载荷作用下的挠度分析[J].工程力学,2007,24(增刊):191-194.REN Gou-ping,LIU Bin,WANG Rui-feng,et al.Deflection of steel tube-confined concrete in the lateral impact[J].Engineering Mechanics,2007,24(Supp.):191-194.(in Chinese)
[7]余同希,华云龙.结构塑性动力学引论[M].合肥:中国科学技术大学出版社,1994:1-30.
[8]HALLQUISTJ Q.LS-DYNA theoretical manual[M].Livermore,USA:Livermore Software Technology Corporation,1988:3-32.
[9]HALLQUIST J O.LS-DYNA keyword user s manual(970V)[M].Livermore,USA:Livermore Software TechnologyCorporation,2003:1-28.
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