Failure behaviors of reinforced concrete beams subjected to high impact loading |
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| Affiliation: | 1. State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 10081, China;2. Institute of Applied Mechanics and Biomedical Engineering, Taiyuan University of Technology, Taiyuan 030024, China;3. School of Electromechanical Engineering, North University of China, Taiyuan 030051, China;1. State Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing 100084, China;2. School of Urban Construction, University of South China, Hengyang 421001, China;1. Department of Civil Engineering, The University of British Columbia, 2024–6250 Applied Science Lane, Vancouver, BC V6T 1Z4, Canada;2. Structural Engineering Research Division, Korea Institute of Construction Technology, Daehwa-dong, 283, Goyangdae-ro, Ilsanseo-gu, Goyang-si, Gyeonggi-do 411-712, Republic of Korea;3. School of Civil, Environmental and Architectural Engineering, Korea University, 5-ga, Anam-dong, Seongbuk-gu, Seoul 136-713, Republic of Korea;1. Construction Technology, Vocational School of Hendek, Sakarya University of Applied Sciences, 54050 Sakarya, Turkey;2. Department of Civil Engineering, Engineering Faculty, Sakarya University, 54050 Sakarya, Turkey;3. Civil Engineering Faculty, Istanbul Technical University, 34469 Istanbul, Turkey;4. Department of Civil Engineering, ALFERA Construction Company, 34538 İstanbul, Turkey |
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| Abstract: | To attain a better understanding of the failure behavior of reinforced concrete (RC) beams under impact load, series of high speed impact experiments were performed using an instrumented drop-weight impact machine. The test program was successful in providing a substantial volume of test data including impact loads, mid-span deflections, crack profiles and strains. These data was analyzed, focusing on the impact load characteristics and the impact behaviors of RC beams. Various characteristic values and their relationships were investigated such as the drop height, the static flexural load-carrying capacity, the input impact energy and the beam response values. Two empirical formulas were proposed to estimate the maximum and residual deflection of the beam based on the static flexural load-carrying capacity and the input impact energy. The applicability of the proposed equations was confirmed by comparison with the experimental results obtained by other researchers. |
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| Keywords: | Falling-weight impact test Impact loading Reinforced concrete beam Residual deflection Loading rate |
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