低速冲击作用下混凝土板破坏效应试验研究

PDF(1561 KB)

振动与冲击 ›› 2019, Vol. 38 ›› Issue (24) : 107-114.

论文

低速冲击作用下混凝土板破坏效应试验研究

古松1,2，彭丰1，余志祥3，李金星1,2,4

作者信息 +

An experimental study on the damage effects of the concrete slabs under low-velocity impact

GU Song1,2，PENG Feng1，YU Zhixiang3，LI Jinxing1,2,4

Author information +

文章历史 +

摘要

为探讨混凝土板在低速冲击作用下的破坏效应，利用落锤试验机对6组混凝土板进行试验研究，分析了不同冲击速度、混凝土板强度和长厚比对混凝土板冲击破坏效应的影响；采用高速摄像机记录了各个试件在冲击过程中裂缝的发生、发展直至破坏的全过程。试验表明：在冲击荷载下混凝土板的裂缝分布随冲击速度的提高向冲击点局部集中有明显趋势，在较高能量下混凝土板在冲击点附近发生冲切破坏；并且基于试验现象推导了考虑板结构整体变形的冲击力计算方法，与试验结果对比可知，该计算方法结果偏差在25%以内，该计算方法合理。

Abstract

In order to investigate the damage effect of concrete slabs under low velocity impact, six groups of concrete slabs were tested by a drop hammer tester, and the effects of different impact velocities, concrete slab strength, and length-thickness ratio on the impact damage of concrete slabs were analyzed.A high-speed camera records the whole process of crack occurrence, development, and destruction of each test piece during the impact process.The test shows that under the impact load, the crack distribution of the concrete slab has a clear trend with the impact velocity increasing to the impact point.At higher energy, the concrete slab is punched and damaged near the impact point; and the board is deduced based on the experimental phenomenon.The calculation method of the impact force of the overall deformation of the structure was compared with the experimental results, which shows that the error of the calculation method are within 25%.

导出引用

古松1,2，彭丰1，余志祥3，李金星1,2,4. 低速冲击作用下混凝土板破坏效应试验研究[J]. 振动与冲击, 2019, 38(24): 107-114

GU Song1,2，PENG Feng1，YU Zhixiang3，LI Jinxing1,2,4. An experimental study on the damage effects of the concrete slabs under low-velocity impact[J]. Journal of Vibration and Shock, 2019, 38(24): 107-114

参考文献

[1] 胡厚田. 崩塌落石研究.[J]. 铁道工程报, 2005: 387-390.
     Hu Houtian. Research on the Collapse and Falling Stone [J]. Journal of Railway Engineering Society, 2005: 387-390.
[2] 沈均, 何思明, 吴永. 滚石灾害研究现状及发展趋势[J]. 灾害学, 2008.23(4): 225-231.
     Shen Jun, He siming, Wu Yong. Research on Standardization of Earthquake Field Data Sharing and Its Standards Drafting [J]. Journal of Catastrophology, 2008,23 (4): 225-231.
[3] 张路青, 杨志法, 许兵. 滚石与滚石灾害[J]. 工程地质学报, 2004.12(3): 225-231.
     Zhang Luqing, Yang Zhifa, Xu Bing. Rock falls and rock fall hazards[J].Journal of Engineering Geology, 2005,12(3): 225–231.
[4] 何思明, 沈均, 吴永. 滚石冲击荷载下棚洞结构动力响应[J].岩土力学, 2011.32(3): 781-788.
     He Siming, Shen Jun, Wu Yong. Rock shed dynamic response to impact of rock-fall [J]. Rock and Soil Mechanics, 2011,32(3): 781-788.
[5] 袁进科. 斜坡震裂岩体结构特征与震后崩塌识别体系研究[D]. 成都理工大学, 2012.
     Yuan Jinke.Slope collapse cracked rock mass structure characteristics and after the identification system research [D]. Chengdu university of technology, 2012.
[6] 李金星. 落石低速冲击混凝土板破坏效应研究[D]. 西南科技大学, 2017.
Li Jinxing. Failure effect of low impact concrete slab with rockfall [D]. Southwest University of Science and Technology, 2017.
[7] 余志祥, 许浒, 吕蕾, 赵雅娜. 落石冲击对山区桥梁墩柱破坏的影响[J].四川大学学报, 2012, 44(06):86-91+132.
Yu Zhixiang, Xu Hu, Lu Lei, Zhao Yana. Influence of rockfall impact on bridge pier failure in mountainous area [J]. Journal of Sichuan University, 2012, 44 (06): 86-91+132.
[8] Kishi N, Mikami H, Matsuoka K G, et al. Impact behavior of shear-failure-type RC beams without shear rebar. International Journal of Impact Engineering,2002,27(9): 955-968
[9] Fujikake K,Li B, Soeun S. Impact Response of Reinforced Concrete Beam and Its Analytical Evaluation. Journal of Structural Engineering，2009，135(8): 938-950
[10] 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)
[11] 陈万祥, 郭志昆. 粘弹性支座RC梁在低速冲击下的弹性响应分析[J]. 工程力学, 2010 , 27 (02) : 186-192+203.
     Chen Wanxiang, Guo Zhikun. Elastic responses of rc beams with viscous-spring supports subjected to low velocity impact. [J]. Engineering mechanics, 2010, 27 (02) : 186-192+203.
[12] Zineddin M. Simulation of Reinforced Concrete Slab Behavior under Impact Loading. In Proc of AEI Conf on Building intergration Solutions. Denver，Colorado，2008，1-9.
[13] Zineddin M,Krauthammer T. Dynamic response and behavior of reinforced concrete slabs under impact loading. International Journal of Impact Engineering，2007，34(9): 1517-1534
[14] 王明洋,宋春明,王德荣,潘越峰.钢筋混凝土板在低速冲击下的计算方法[J].兵工学报, 2004, 25 (06):672-678.
     Wang Mingyang, Wang Derong, Song Chunming. A Calculation Method of Reinforced Concrete Beam
     Under Low Velocity Impact. [J]. Engineering mechanics, 2006, 27 (03) : 399-405.
[15] 余志武.钢筋混凝土板和基础的极限承载力计算及破坏类型判别方法[J].建筑结构学报,1990,11(4): 46-52
YU Zhiwu. Calculation of ultimate bearing capacity and method for determining damage type of reinforced concrete slabs and foundations[J]. Journal of Building Structures, 1990, 11(4): 46-52.

[16] 周朝阳.冲切与弯曲和剪切的比较分析[J].工程力学,1997增刊, 391-394.
ZHOU Chaoyang.Comparative analysis of punching, bending and shearing[J].Engineering Mechanics,1997 （Sup1）：391-394.
[17] 韩菊红,丁自强.钢筋混凝土四边支承矩形板抗冲切性能试验研究[J].建筑结构学报,1994,15(6): 38-46.
HAN Juhong, DING Ziqiang. Experimental study on punching resistance of reinforced concrete four-sided supporting rectangular plates[J]. Journal of Building Structures, 1994, 15(6): 38-46.
[18] 周朝阳.配置抗冲切钢筋的混凝土板柱连接的破坏形态与承载力分析[J].建筑结构学报,1997,18(6): 26-31.
ZHOU Chaoyang.Analysis of failure modes and bearing capacity of concrete slab-column connections with shear-cut bars[J].Journal of Building Structures,1997,18(6): 26-31.
[19] 安玉杰,赵国藩,黄承逵.配筋钢纤维混凝土板抗冲切性能的试验研究(上) [J].建筑结构报, 1994, 15(2): 11-16
AN Yujie, ZHAO Guofan, HUANG Chengkui. Experimental study on punching resistance of reinforced steel fiber reinforced concrete slabs (Part I) [J]. Building Structure Report, 1994, 15(2): 11-16.
[20] 郑作樵,欧阳成生.钢筋混凝土圆板的冲切强度[J].   建筑结构学报,1985,3(6): 14-22.
ZHENG Zuoqiao, OUYANG Chengsheng. Punching strength of reinforced concrete circular plates[J]. Journal of Building Structures, 1985, 3(6): 14-22.
[21] Moe,J. Shearing strength of Reinforced Concrete Slabs and Footings Under concentrated Loads. Development Department Bulletin D47. Portland Cement Association，1961: 57-63.
[22] 郭晓林,刘广义,曹声远等.钢筋混凝土板冲切破坏机理的试验研究及冲切承载力计算[J].哈尔滨建筑工程学院学报,1993,26(6): 74-80.
GUO Xiaolin, LIU Guangyi, CAO Shengyuan ,et al. Experimental study on punching failure mechanism of reinforced concrete slab and calculation of punching bearing capacity[J].Journal of Harbin Institute of Civil Engineering and Architecture,1993,26(6): 74-80.
[23] 王晓琴.厚筏与地基共同作用及冲切承载力研究[D].   兰州理工大学,2005.6.
[24] Derueher K.N. Analysis of concrete bridge piers for vessel impaet[A]. Proceeding of Sino American Symposium on Bridge and Structural Engineering [C] , Sept.13-19,1982.
[25] Chuan-YuWu,Long-YuanLi,Colin Thornton. Energy dissipation during impact of elasticand elastic-plastic spheres. [J]. International Jour-nal of Impact Engineering, 2005: 593-604.