钢筋混凝土梁撞击缓冲效应试验研究

PDF(711 KB)

振动与冲击 ›› 2017, Vol. 36 ›› Issue (13) : 178-183.

论文

钢筋混凝土梁撞击缓冲效应试验研究

王慧，张南，陈旭，魏星，张玲，张文欢

作者信息 +

Experimental studies on impact buffer effect of reinforced concrete beams

Wang Hui, Zhang Nan, Chen Xu, Wei Xing, Zhang Ling, Zhang Wen-huan

Author information +

文章历史 +

摘要

采用落锤撞击试验装置，进行了8根钢筋混凝土梁的撞击试验。对比分析了设置缓冲装置前后试件撞击动力响应的变化。试验结果表明，设置有缓冲装置的试件动力响应有大幅度降低，受弯作用的梁撞击峰值力可降低70.98%，撞击点背面纵筋峰值应变可降低71.11% ；受剪作用的梁撞击峰值力可降低76.24%，撞击点背面纵筋峰值应变可降低83.09%，箍筋峰值应变可降低84.65%，这对研究高效的抗撞综合体系具有试验参考价值。运用能量守恒原理和动量定理，建立了设置缓冲装置后作用于简支梁的撞击力计算公式。撞击力计算值与试验撞击力峰值吻合较好，这为撞击缓冲效应的理论计算提供了具有试验依据的简捷方法。

Abstract

The impact tests of eight reinforced concrete beams were conducted by falling weight impact equipment. The impact dynamic responses of the test specimens with and without buffer were analyzed contrastively. The test results show that the buffer can greatly reduce the impact dynamic responses of specimens. The peak impact force of the beams in bending can be decreased by 70.98%, the peak strain of tensile reinforcement can be decreased by 71.11%; The peak impact force of the beams with shear can be decreased by 76.24%, the peak strain of tensile reinforcement can be decreased by 83.09%, the peak strain of stirrup reinforcement can be decreased by 84.65%. These study results have provided a test reference for the study of efficient anti-collision system. Based on the energy conservation principle and the theorem of momentum, the calculation formula of impact force acting on a simply supported beam was established. The calculated value of the impact force was in good agreement with the test impact force peak, which provides a simple and quick method with test bases for theoretical calculation of impact buffer effect.

导出引用

王慧，张南，陈旭，魏星，张玲，张文欢. 钢筋混凝土梁撞击缓冲效应试验研究[J]. 振动与冲击, 2017, 36(13): 178-183

Wang Hui, Zhang Nan, Chen Xu, Wei Xing, Zhang Ling, Zhang Wen-huan. Experimental studies on impact buffer effect of reinforced concrete beams[J]. Journal of Vibration and Shock, 2017, 36(13): 178-183

参考文献

[1] 许斌，曾翔. 冲击荷载作用下钢筋混凝土深梁动力性能试验研究[J].振动与冲击.2015,34 (4)：6-39.
   XU Bin, ZENG Xiang. Test for dynamic behavior of deep RC beams under impact loadings[J]. Journal of Vibration and Shock. 2015,34(4):6-39.
[2] 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)：41-47.
   XU Bin, ZENG Xiang. Experimental study on the behaviors of reingforced concrete beams under impact loadings [J]. China Civil Engineering Journal . 2014,47(2):41-47.
[3] 崔堃鹏，夏禾，夏超逸，等. 横向撞击力对铁路桥梁及行车影响的模型实验研究[J].振动与冲击.2014,33 (9)：48-54.
   CUI Kun-peng, XIA He, XIA Chao-yi et al. Model test for lateral collision force on railway bridge and vehicle running safety[J]. Journal of Vibration and Shock. 2014,33(9):48-54
[4] 李砚召，王小钧，郭晓辉，等.部分预应力混凝土梁抗冲击性能试验研究[J].爆炸与冲击.2006,26 (3)：256-261.
LI Yan-zhao, WANG Xiao-jun, WANG Xiao-jun, et al. Experimental study on Anti-impact properties of a partially prestressed concrete beam[J]. Explosion and Shock Waves, 2006, 26(3):256-261.
[5] Saatci, Selcuk, Vecchio F J. Effects of shear mechanisms on impact behavior of reinforced concrete beams[J]. ACI Structural Journal,2009,106(1):78-86.
[6] N.Kishia,H.Mikami, K.G.Matsuoka, et al. Impact behavior of shear-failure-type RC beams without shear rebar[J].International Journal of Impact Engineering,2002,27:955-968.
[7] 朱亚迪，卢文良. 小车墩柱撞击力模型试验研究[J].振动与冲击.2013,32 (21)：182-203.
ZHU Ya-di, LU Wen-liang. Model tests for collision force between a vehicle and piers[J]. Journal of Vibration and Shock. 2013,32(21):182-203.
[8]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
[9]孟一,易伟建. 混凝土圆柱体试件在低速冲击下动力效应的研究[J]. 振动与冲击,2011,03:205-210
   MENG Yi, YI Wei-jian. Dynamic behavior of concrete cylinder specimens under low velocity impact[J]. Journal of Vibration and Shock. 2011,03:205-210
[10]ZINEDDIN M, KRAUTHAMMER T. Dynamic response and behavior of reinforced concrete slabs under impact loading [J].International Journal of Impact Engineering,2007,34:1517-1534.
[11] 周泽平，王明洋，冯淑芳，等.钢筋混凝土梁在低速冲击下的变形与破坏研究[J].振动与冲击，2007，26(5)：99-103
    ZHOU Ze-ping, WANG Ming-yang, FENG Shufang, et al. Deformation and failure of a reinforced beam under low velocity impact[J]. Journal of Vibration and Shock, 2007，26(5)：99-103.
[12] 刘思明，崔堃鹏，夏禾，等.基于LS-DYNA的车辆对桥墩撞击力的仿真分析[J].铁道标准设计，2013(08)：70-74
    LIU Si-ming, CUI Kun-peng, XIA He, at al. Dynamic Simulation Analysis Based on LS-DYNA about Impact Force on Bridge Pier Caused by Vehicle[J].Railway Standard Design ,2013(08):70-74.
[13]孟一. 冲击荷载作用下钢筋混凝土梁的试验及数值模拟研究[D].湖南大学,2012
   MENG Yi. Experiment and numerical simulation study on reinforced concrete beam under impact loading[D]Hunan University,2012.
[14]何爱军,张少波,宋晓软,吕金峰,李欣宇,倪孟珠. 钢筋混凝土梁破坏实验的仿真分析[J]. 北方工业大学学报,2012,03:72-77.
   HE Ai-jun ZHANG Shao-bo, SONG Xiao-Ruan, et al. Simulation analysis of reinforced concrete beam failure experiment[J]. Journal of North China University of technology,2012 03:72-77
[15]卢红琴，许琦，张南，撞击荷载下带吸能装置的钢筋混凝土桥墩动力响应研究[J].四川建筑科学研究,2010,36(6):7-18.
   LU Hong-qin, XU Qi, ZHANG Nan. Research on dynamic response of reinforced concrete pier with energy dissipation device under impact load[J]Sichuan Building Science, 2010,36(6):7-18
[16]许琦，张南.撞击荷载下耗能装置缓冲吸能特性研究.[J]重庆交通大学学报（自然科学版），2010,29(4)：506-509.
   XU Qi, ZHANG Nan. Research on buffer effect and energy absorption capacity of buffers under impact loading. Journal of Chongqing Jiaotong University (Natural Science), 2010,29(4)：506-509
[17] 张南，许琦，刘钊，等. 缓冲器对钢筋混凝土桥墩撞击性能影响的试验研究[J].公路交通科技.2009,26 (12)：84-90
   ZHANG Nan, XU Qi, LIU Zhao, et al. Experimental research on effect of buffer on impact performance of reinforced concrete pier[J] Journal of Highway and Transportation Research and Development. 2009,26 (12)：84-90
[18]朱斌.结构简化弹塑性撞击分析模型及新型防撞吸能器初步试验研究.[J]土木工程学报，2007,40(2)：13-17
   ZHU Bin. Elastoplasticity impact model and Experimental Study of new absorber for structural collision protection[J]. China Civil Engineering Journal, 2007, 40 (2):13-17.
[19]QIAO P, YANG M, MOSALLAM A S. Impact analysis of I-Lam sandwich system for over-height collision protection of highway bridges.[J]. Engineering Structures,2004,26:1003-1012.
[20]万志敏，赵桂范，杜星文.复合材料结构的能量吸收[J].材料科学与工艺，2001,9(3)：247-249.
   WAN Zhi-min, ZHAO Gui-fan, DU Xing-wen. Energy absorption in structures of composite materials[J].Materials Science & Technology, 2001,9(3)：247-249.