|
|
|
| Dynamic compression tests and damage analysis for ultrahigh performance concrete |
| LIU Jixuan1, CHEN Xudong1, SHI Dandan1, WANG Luyao2, NING Yingjie2, GAN Yuannan3 |
| 1. College of Civil and Transportation Engineering, Hohai University, Nanjing 210098, China;
2. Zhejiang Communications Construction Group Co., Ltd., Hangzhou 310051, China;
3. China Safety Energy Group Second Engineering Bureau Co., Ltd., Nanchang 330095, China |
|
|
|
|
Abstract In order to explore the damage characteristics of ultra-high performance concrete (UHPC) under dynamic compression, the dynamic compressive mechanical properties of UHPC under different strain rates (52 /s ~ 368 /s) were studied by split Hopkinson pressure bar (SHPB) device, and the failure process of the specimen was analyzed based on DIC technology. The failure process of the specimen was analyzed based on high-speed camera and DIC technology. The results show that Under the impact load, the UHPC specimen can still remain intact after failure. The dynamic compressive strength and toughness of UHPC show obvious strain rate sensitivity. With the increase of strain rate, steel fiber can better absorb impact energy and restrain the increase of critical strain. Under different strain rates, the early development rate of cracks is basically the same, and the final width of cracks increases with the increase of strain rate. The crack development is greatly affected by the strain rate, and the final width of the crack increases with the increase of the strain rate. The final width of the crack at low strain rate is not its maximum width. This study provides a theoretical support for the service performance and damage assessment of UHPC.
|
|
Received: 08 May 2023
Published: 15 May 2024
|
|
|
|
| [1] 黄政宇，王若丁. 应用SHPB试验对超高性能重混凝土动态性能的研究[J]. 铁道科学与工程学报，2020, 17(11): 2798-2806.
HUANG Zhengyu, WANG Ruoding. Dynamic behavior of ultra-high performance heavy concrete in split Hopkinson pressure bar testing[J]. Journal of Railway Science and Engineering, 2020, 17(11): 2798-2806.
[2] 任亮，何瑜，王凯. 基于整形器的 UHPC 材料 SHPB 试验数值模拟与分析[J]. 振动与冲击，2019, 38(21): 44-52.
REN Liang, HE Yu, WANG Kai. Numerical simulation and analysis of SHPB test for UHPC material based on shaper[J]. Journal of Vibration and Shock, 2019, 38(21): 44-52.
[3] 李新星，周泉，李水生. UHPC-钢筋错位连接的预制剪力墙带板结构抗震性能试验研究[J].振动与冲击，2023, 42(01): 273-281.
LI Xinxing, ZHOU Quan, LI Shuisheng. Aseismic performance tests of precast shear wall-slab structure with UHPC-reinforcement dislocation connection[J]. Journal of Vibration and Shock,2023, 42(01): 273-281.
[4] 陈宝春，韦建刚，苏家战，等. 超高性能混凝土应用进展[J]. 建筑科学与工程学报，2019, 36(02): 10-20.
CHEN Baochun, WEI Jiangang, SU Jiazhan, et al. State-of-the-art progress on application of ultra-high performance concrete[J]. Journal of Architecture and Civil Engineering, 2019, 36(2): 10-20.
[5] R.J. Thomas, Andrew D. Sorensen. Review of strain rate effects for UHPC in tension[J]. Construction and Building Materials, 2017,153.
[6] Doo-Yeol Yoo, Nemkumar Banthia. Mechanical and structural behaviors of ultra-high-performance fiber-reinforced concrete subjected to impact and blast[J]. Construction and Building Materials, 2017,149.
[7] Soufeiani L, Raman S N, Jumaat M Z B, et al. Influences of the volume fraction and shape of steel fibers on fiber-reinforced concrete subjected to dynamic loading–A review[J]. Engineering Structures, 2016, 124: 405-417.
[8] Wang S, Zhang M H, Quek S T. Effect of high strain rate loading on compressive behaviour of fibre-reinforced high-strength concrete[J]. Magazine of concrete research, 2011, 63(11): 813-827.
[9] 张玉武，晏麓晖，李凌锋. UHMWPE 纤维混凝土动态压缩力学性能研究[J]. 振动与冲击，2017,36(8): 92-96.
ZHANG Yuwu, YAN Luhui, LI Lingfeng. Dynamic compressive mechanical properties of UHMWPE fiber reinforced concrete[J]. Journal of Vibration and Shock, 2017, 36(8):92-96.
[10] 邓永兴，陆晓霞，李磊，等. 铝粉动态压缩动力学特性研究[J]. 振动与冲击，2022,41(19): 231-236+253.
DENG Yongxing, LU Xiaoxia, LI lei, et al. Dynamic compression characteristics of aluminium powder[J]. Journal of Vibration and Shock, 2017, 36(8): 92-96.
[11] MINDESS E T A. S. MINDESS, JF YOUNG, D. DARWIN[J]. 2003.
[12] Hou X, Cao S, Rong Q, et al. Effects of steel fiber and strain rate on the dynamic compressive stress-strain relationship in reactive powder concrete[J]. Construction and Building Materials, 2018, 170: 570-581.
[13] Wu Z, Shi C, He W, et al. Static and dynamic compressive properties of ultra-high performance concrete (UHPC) with hybrid steel fiber reinforcements[J]. Cement and concrete composites, 2017, 79: 148-157.
[14] Tai Y S. Uniaxial compression tests at various loading rates for reactive powder concrete[J]. Theoretical and Applied Fracture Mechanics, 2009, 52(1): 14-21. |
| [1] |
YANG Ke1,2,3, XU Rijie1,2,3, LIU Shuai1,2,4, LIU Wenjie1,2,3, ZHANG Jie1,2,3. Dynamic response characteristics and damage constitutive model of coal samples under impact load[J]. JOURNAL OF VIBRATION AND SHOCK, 2024, 43(9): 139-148. |
|
|
|
|
