Performance and damage evaluation of RC beams under impact loading

被引：0
|
作者：
Zhao W. [1 ]
Qian J. [1 ]
Zhang W. [1 ]
机构：
[1] State Key Laboratory of Disaster Reduction in Civil Engineering, Tongji University, Shanghai
来源：
Baozha Yu Chongji/Explosion and Shock Waves | 2019年 / 39卷 / 01期
关键词：
Damage evaluation; Dynamic response; Energy dissipation mechanism; Impact loading; RC beams;
D O I：
10.11883/bzycj-2017-0288
中图分类号：
学科分类号：
摘要：
In this work, we investigated the impact resistance and damage mechanism of RC beams under impact loading using numerical simulation based on impact tests. We established a damage evaluation method based on the cross-sectional damage factor with the finiteness of the impact area and impact time taken into consideration, and analyzed the influence of impact parameters on the dynamic response and damage level of RC beams by conducting examination of such parameters as the stirrups pacing, boundary condition, impact or nose shape, and impact location. The results indicate that the damage assessment method proposed in this study can visually describe the damage distribution along the length of RC beams, that the end fixed constraints can effectively change the energy dissipation mechanism of RC beams and improve the impact resistance capability, that the impact location directly affects the beams' crack distribution and failure mode, and that the impact area and nose shape have a certain influence on the damage distribution of RC beams. © 2019, Editorial Staff of EXPLOSION AND SHOCK WAVES. All right reserved.
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