圆形截面钢筋混凝土悬臂柱抗冲击性能试验研究
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摘要
为了研究冲击作用下的钢筋混凝土悬臂柱的抗冲击性能,采用大型水平撞击试验设备对4根圆形截面钢筋混凝土圆柱进行了试验研究,分析了不同冲击速度和柱配箍率对混凝土柱抗冲击性能的影响。采用高速摄像机记录了各个试件在冲击作用下的裂缝及变形的发展过程,得到了相关的冲击力时程曲线、柱变形分布图、试件裂缝及变形的发展过程和试件最终的破坏形态等试验结果。通过对以上试验结果的分析,发现增加混凝土柱的配箍率可以明显减少在高速冲击作用下的变形和减轻冲击后的损伤状态。
In order to investigate the impact resistance capacity of reinforced concrete cantilever columns,four circular section RC columns were tested by using the horizontal collision facility.The effects of impact velocity and column transverse reinforcement ratio on the impact behavior were analyzed.A high speed camera was employed to record the development of the crack and deformation of the specimens.The corresponding impact force history,deformed shape,crack development and the final damage patterns of specimens were obtained.By analyzing the test results,it was found that increase of the transverse reinforcement ratio could obviously reduce the deformation and mitigate the final damage state under high speed impact.
In order to investigate the impact resistance capacity of reinforced concrete cantilever columns,four circular section RC columns were tested by using the horizontal collision facility.The effects of impact velocity and column transverse reinforcement ratio on the impact behavior were analyzed.A high speed camera was employed to record the development of the crack and deformation of the specimens.The corresponding impact force history,deformed shape,crack development and the final damage patterns of specimens were obtained.By analyzing the test results,it was found that increase of the transverse reinforcement ratio could obviously reduce the deformation and mitigate the final damage state under high speed impact.
引文
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[2]Tachibana S,Masuya H,Nakamura S.Performance based design of reinforced concrete beams under impact[J].Natural Hazards and Earth System Sciences,2010,10(6):1069-1078.
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[4]Zhan T,Wang Z,Ning J.Failure behaviors of reinforced concrete beams subjected to high impact loading[J].Engineering Failure Analysis,2015,56:233-243.
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[8]Fujikake K,Li B,Soeun S.Impact response of reinforced concrete beam and its analytical evaluation[J].Journal of Structural Engineering,2009,135(8):938-950.
[9]Saatci S,Vecchio F J.Effects of shear mechanisms on impact behavior of reinforced concrete beams[J].ACIStructural Journal,2009,106(1):78.
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[14]Bischoff P H,Perry S H.Compressive behaviour of concrete at high strain rates[J].Materials and Structures,1991,24(6):425-450.
[15]Tsang H H,Lam N T K.Collapse of reinforced concrete column by vehicle impact[J].Computer-Aided Civil and Infrastructure Engineering,2008,23(6):427-436.
[16]Bhatti A Q,Kishi N,Mikami H,et al.Elasto-plastic impact response analysis of shear-failure-type rc beams with shear rebars[J].Materials and Design,2009,30(3):502-510.
[17]Kishi N,Bhatti A Q.An Equivalent Fracture energy concept for nonlinear dynamic response analysis of prototype rc girders subjected to falling-weight impact loading[J].International Journal of Impact Engineering,2010,37(1):103-113.
[18]姜华,贺拴海,王君杰.钢筋混凝土梁冲击试验数值模拟研究[J].振动与冲击,2012,31(15):140-145.Jiang Hua,He Shuanhai,Wang Junjie.Numerical simulation of the impact test of reinforced concrete beams[J].Journal of Vibration and Shock,2012,31(15):140-145.(in Chinese)
[19]田力,朱聪,王浩,等.碰撞冲击荷载作用下钢筋混凝土柱的动态响应及破坏模式[J].工程力学,2013,30(2):150-155.Tian Li,Zhu Cong,Wang Hao,et al.Dynamic response and failure modes of RC columns under impact[J].Engineering Mechanics,2013,30(2):150-155.(in Chinese)
[20]田力,朱聪.碰撞冲击荷载作用下钢筋混凝土柱的损伤评估及防护技术[J].工程力学,2013,30(9):144-150.Tian Li,Zhu Cong.Damage evalution and protection technique of RC columns under impulsive load[J].Engineering Mechanics,2013,30(9):144-150.(in Chinese)
[21]程小卫,李易,陆新征,等.撞击荷载下钢筋混凝土柱动力响应的数值研究[J].工程力学,2015,32(2):53-63.Cheng Xiaowei,Li Yi,Lu Xinzheng,et al.Numerical investigation on dynamic reponse of reinforced concrete columns subjected to impact loading[J].Engineering Mechanics,2015,32(2):53-63.(in Chinese)
[22]Jiang H,Chorzepa M G.An effective numerical simulation methodology to predict the impact response of pre-stressed concrete members[J].Engineering Failure Analysis,2015,55:63-78.
[23]李培振,程远超,高宇,等.底层框架柱在黏性泥石流冲击作用下的性能分析[J].结构工程师,2016,32(3):15-21.Li Peizhen,Cheng Yuanchao,Gao Yu,et al.Study on performance of the bottom column of a frame structure under viscous debris flow impact[J].Structural Engineers,2016,32(3):15-21.(in Chinese)
[2]Tachibana S,Masuya H,Nakamura S.Performance based design of reinforced concrete beams under impact[J].Natural Hazards and Earth System Sciences,2010,10(6):1069-1078.
[3]Kishi N,Mikami H.Experimental formulas for designing reinforced concrete beams under impact loading[J].ACI Structural Journal,2012,109(4):509-519.
[4]Zhan T,Wang Z,Ning J.Failure behaviors of reinforced concrete beams subjected to high impact loading[J].Engineering Failure Analysis,2015,56:233-243.
[5]赵德博,易伟建.钢筋混凝土梁抗冲击性能和设计方法研究[J].振动与冲击,2015,34(11):139-145.Zhao Debo,Yi Weijian.Anti-impact behavior and design method for RC beams[J].Journal of Vibration and Shock,2015,34(11):139-145.(in Chinese)
[6]Banthia N,Mindess S,Bentur A,et al.Impact testing of concrete using a drop-weight impact machine[J].Experimental Mechanics,1989,29(1):63-69.
[7]Remennikov A,Kaewunruen S.Impact resistance of reinforced concrete columns:experimental studies and design considerations[C]//19th Australasian Conference on the Mechanics of Structures and Materials,Christchurch,New zealand,2006.
[8]Fujikake K,Li B,Soeun S.Impact response of reinforced concrete beam and its analytical evaluation[J].Journal of Structural Engineering,2009,135(8):938-950.
[9]Saatci S,Vecchio F J.Effects of shear mechanisms on impact behavior of reinforced concrete beams[J].ACIStructural Journal,2009,106(1):78.
[10]曾翔,许斌.无腹筋钢筋混凝土梁抗冲击行为试验研究[J].土木工程学报,2012,45(9):63-73.Zeng Xiang,Xu Bin.Experimental study on the impact-resistant behavior of RC beams without shear-resistant rebar[J].China Civil Engineering Journal,2012,45(9):63-73.(in Chinese)
[11]许斌,曾翔.冲击荷载作用下钢筋混凝土梁性能试验研究[J].土木工程学报,2014,47(2):41-51.Xu Bin,Zeng Xiang.Experimental study on the behaviors of reinforced concrete beams under impact loadings[J].China Civil Engineering Journal,2014,47(2):41-51.(in Chinese)
[12]许斌,曾翔.冲击作用下钢筋混凝土深梁动力性能试验研究.振动与冲击,2015,34(4):6-13.Xu Bin,Zeng Xiang.Tests for dynamic behaviors of deep RC beams under impact loadings[J].Journal of Vibration and Shock,2015,34(4):6-13.(in Chinese)
[13]窦国钦,杜修力,李亮.冲击荷载作用下高强钢筋混凝土梁性能试验[J].天津大学学报(自然科学与工程技术版),2014(12):1072-1080.Dou Guoqin,Du Xiuli,Li Liang.Experimental study on the behavior of high strength reinforced concrete beams under impact laod[J].Journal of Tianjin University(Science and Technology),2014(12):1072-1080.(in Chinese)
[14]Bischoff P H,Perry S H.Compressive behaviour of concrete at high strain rates[J].Materials and Structures,1991,24(6):425-450.
[15]Tsang H H,Lam N T K.Collapse of reinforced concrete column by vehicle impact[J].Computer-Aided Civil and Infrastructure Engineering,2008,23(6):427-436.
[16]Bhatti A Q,Kishi N,Mikami H,et al.Elasto-plastic impact response analysis of shear-failure-type rc beams with shear rebars[J].Materials and Design,2009,30(3):502-510.
[17]Kishi N,Bhatti A Q.An Equivalent Fracture energy concept for nonlinear dynamic response analysis of prototype rc girders subjected to falling-weight impact loading[J].International Journal of Impact Engineering,2010,37(1):103-113.
[18]姜华,贺拴海,王君杰.钢筋混凝土梁冲击试验数值模拟研究[J].振动与冲击,2012,31(15):140-145.Jiang Hua,He Shuanhai,Wang Junjie.Numerical simulation of the impact test of reinforced concrete beams[J].Journal of Vibration and Shock,2012,31(15):140-145.(in Chinese)
[19]田力,朱聪,王浩,等.碰撞冲击荷载作用下钢筋混凝土柱的动态响应及破坏模式[J].工程力学,2013,30(2):150-155.Tian Li,Zhu Cong,Wang Hao,et al.Dynamic response and failure modes of RC columns under impact[J].Engineering Mechanics,2013,30(2):150-155.(in Chinese)
[20]田力,朱聪.碰撞冲击荷载作用下钢筋混凝土柱的损伤评估及防护技术[J].工程力学,2013,30(9):144-150.Tian Li,Zhu Cong.Damage evalution and protection technique of RC columns under impulsive load[J].Engineering Mechanics,2013,30(9):144-150.(in Chinese)
[21]程小卫,李易,陆新征,等.撞击荷载下钢筋混凝土柱动力响应的数值研究[J].工程力学,2015,32(2):53-63.Cheng Xiaowei,Li Yi,Lu Xinzheng,et al.Numerical investigation on dynamic reponse of reinforced concrete columns subjected to impact loading[J].Engineering Mechanics,2015,32(2):53-63.(in Chinese)
[22]Jiang H,Chorzepa M G.An effective numerical simulation methodology to predict the impact response of pre-stressed concrete members[J].Engineering Failure Analysis,2015,55:63-78.
[23]李培振,程远超,高宇,等.底层框架柱在黏性泥石流冲击作用下的性能分析[J].结构工程师,2016,32(3):15-21.Li Peizhen,Cheng Yuanchao,Gao Yu,et al.Study on performance of the bottom column of a frame structure under viscous debris flow impact[J].Structural Engineers,2016,32(3):15-21.(in Chinese)