低速冲击下混凝土板的能量耗散研究

Abstract
Figure/Table
References (21)
Related Citation (15)

Download: PDF (1620 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract Aiming at the problem of energy dissipation of concrete slabs under low-speed impact,six groups of concrete slab specimens were tested under low-speed impact using a drop hammer device.The elastic deformation energy of the specimens was calculated based on the theory of elastic mechanics,and the plastic deformation energy of the specimens was obtained through the law of energy conservation.The influence of concrete strength and drop hammer impulse on the energy dissipation of concrete slab failure was analyzed.The results show that 98% of the energy absorbed by the concrete slab under low velocity impact is consumed by plastic deformation energy;The strength of concrete can not completely determine the energy consumption of plastic deformation energy of concrete slabs under low velocity impact.The plastic deformation energy of concrete slabs increases with the increase in the impact energy,and presents a good linear relationship.This study can provide a reference for improving the protection ability of concrete slab members under low velocity impact,and it is necessary for the design of protection engineering.

Key words： Falling Rocks concrete Low speed impact Plastic deformation energy energy dissipation

Received: 25 October 2022 Published: 15 December 2023

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors

Cite this article:

URL:

http://jvs.sjtu.edu.cn/EN/ OR http://jvs.sjtu.edu.cn/EN/Y2023/V42/I23/300

[1] 何思明,王东坡,吴永. 崩塌滚石灾害形成演化机理与减灾关键技术[M]. 北京:科学出版社,2015:1-5.
HE Si-ming, WANG Dong-po,WU Yong. Formation and evolution mechanism of rockfall disaster and key technologies for disaster reduction [M]. Beijing:Science Press,2015:1-5.
[2] 胡厚田. 崩塌与落石[M]. 北京:中国铁道出版社1989,78-105.
HU Hou-tian. Collapse and Falling Rocks [M]. Beijing:China Railway Publishing House 1989,78-105.
[3] 古松,彭丰,余志祥,李金星. 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, PENG Feng, YU Zhi-xiang, et al. Experimental study on damage effect of concrete slabs under low velocity impact [J]. Vibration and Impact, 2019, 38(24): 107-114.
[4] 王爽. 高陡边坡落石作用对隧道棚洞的动力响应及抗冲击研究[D]. 西南交通大学,2015.
WANG Shuang. Research on dynamic response and impact resistance of high and steep slope rockfall to tunnel shed [D]. Southwest Jiaotong University,2015.
[5] 张伟. 落石冲击下钢筋混凝土板破坏机理的试验研究[D]. 西安理工大学,2016.
ZHANG Wei. Experimental study on failure mechanism of reinforced concrete slabs under rockfall impact [D]. Xi'an University of Technology,2016.
[6] 王珂. 冲击荷载作用下预加荷载钢筋混凝土板动力响应与损伤研究[D]. 福建工程学院,2021.
WANG Ke. Study on dynamic response and damage of Reinforced concrete slab with preload under impact load [D]. Fujian college of engineering,2021.
[7] 马钢,高松涛,王卓然,马志宏. 低速冲击下纤维混凝土梁的动力学特征与断裂耗能研究[J]. 振动与冲击,2022,41(08):208-216.
MA Gang, GAO Song-tao, WANG Zhuo-ran, et al. Study on Dynamic Characteristics and Fracture Energy Dissipation of Fiber Reinforced Concrete Beams under Low Velocity Impact [J]. Vibration and Impact, 2022, 41(08): 208-216.
[8] 赵雪芹,古松,李金星. 考虑混凝土板整体变形的落石冲击力计算方法研究[J]. 四川建筑科学研究,2019,45(01):64-68.
ZHAO Xue-qin, GU Song, Li Jin-xing. Research on calculation method of rockfall impact force considering the overall deformation of concrete slab [J]. Sichuan Building Science Research, 2019, 45(01): 64-68.
[9] Quanquan Guo, Weiyi Zhao. Design of steel-concrete composite walls subjected to low-velocity impact [J]. Journal of Constructional Steel Research,2019,154:190-196.
[10] M.Roderick Jones, Li Zheng. Energy absorption of foamed concrete from low-velocity impacts [J]. Magazine of Concrete Research,2013,65(4),209–219.
[11] K Senthil, Ziyad Kubba, et al. Experimental and Numerical Investigation on Reinforced Concrete Slab under Low Velocity Impact Loading [J]. Materials Science and Engineering,2021,1090 012090.
[12] 党发宁,李玉涛,任劼等. 混凝土冲击破坏动态力学及能量特性分析[J].爆炸与冲击,2022,42(08):63-76.
DANG Fa-ning, LI Yutao,REN Jie,et al. Analysis of dynamic mechanics and energy characteristics of concrete impact failure [J]. Explosion and Impact, 2022, 42(08): 63-76.
[13] Xiao Y, Li B, Fujikake K. Behavior of reinforced concrete slabs under low-velocity impact[J]. ACI Structural Journal, 2017, 114(3): 643-658.
[14] 柏雪松. 落石冲击棚洞结构的动力响应研究[D].中国地质大学(北京),2019.
BAI Xue-song. Study on Dynamic response of roof Cave structure impacted by falling Rock [D]. China University of Geosciences (Beijing),2019.
[15] 徐芝纶. 弹性力学（下）[M]. 北京：高等教育出版社，2006.
XU Zhi-lun. Elasticity(II) [M]. Beijing:Higher Education Press,2006.
[16] GB 50010-2010, 混凝土结构设计规范[S]. 北京中国建筑工业出版社，2010.
GB 50010-2010, Code for Design of Concrete Structures [S]. Beijing: China Architecture and Building Press, 2010.
[17] 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 Jin-xing. Research on the damage effect of rockfall low velocity impact concrete slabs [D]. Southwest University of Science and Technology,2017.
[18] Xiao Yao, Li Bing, Fujikake Kazunori. Behavior of reinforced concrete slabs under low velocity impact [J]. ACI STRUCTURAL, 2017, 114(3), 643‑658.
[19] ZHANG Z X, KOU S Q, JIANG L G, et al. Effects of loading rate on rock fracture:fracture characteristics and energy partitioning [J]. International Journal of Rock Mechanics and Mining Sciences,2000,37(5):745-762.
[20] 刘石,许金余,刘军忠,等. 绢云母石英片岩和砂岩动态破坏过程的能量分析[J].地下空间与工程学报,2011,7(06):1181-1185.
LIU Shi, XU Jin-yu, LIU Jun-zhong, et al. Analysis on energy of sericite-quartz schist and sandstone in the dynamic fracture process [J]. Chinese Journal of Underground Space and Engineering, 011, 7(6): 1181-1185
[21] 翟越,马国伟,赵均海,等. 花岗岩和混凝土在单轴冲击压缩荷载下的动态性能比较[J]. 岩石力学与工程学报,2007,26(4):762–768.
ZHAI Yue, MA Guo-wei, ZHAO Jun-hai, et al. Comparison of dynamic properties of granite and concrete under uniaxial impact compression load [J]. Journal of Rock Mechanics and Engineering, 2007, 26(4): 762–768.

[1]	. [J]. JOURNAL OF VIBRATION AND SHOCK, 2024, 43(2): 28-.