Response of ultra-high-performance fiber-reinforced concrete beams with continuous steel reinforcement subjected to low-velocity impact loading
- Title
- Response of ultra-high-performance fiber-reinforced concrete beams with continuous steel reinforcement subjected to low-velocity impact loading
- Author
- 류두열
- Keywords
- Ultra-high-performance fiber-reinforced concrete; Impact; Strain rate; Reinforcement ratio; Sectional analysis; Single-degree-of-freedom
- Issue Date
- 2015-08
- Publisher
- ELSEVIER SCI LTD
- Citation
- COMPOSITE STRUCTURES, v. 126, Page. 233-245
- Abstract
- To investigate the effect of the reinforcement ratio on the flexural behavior of ultra-high-performance fiber-reinforced concrete (UHPFRC) beams under impact loading, a total of four large-sized (200 x 270 x 2900 mm) beams were fabricated and tested using a drop-weight impact test machine. The incident kinetic energy and impact velocity were 4.2 kJ and 5.6 m/s, respectively. A higher reinforcement ratio exhibited lower maximum and residual deflections and better deflection recovery. The test results also indicate that the maximum crack width at a certain drop stage decreased with the reinforcement ratio. A nonlinear analytical model for predicting the impact behavior of a UHPFRC beam was developed using multi-layer sectional analysis and single-degree-of-freedom analysis, and the model was verified through comparison with the experimental results. (C) 2015 Elsevier Ltd. All rights reserved.
- URI
- http://www.sciencedirect.com/science/article/pii/S0263822315001464http://hdl.handle.net/20.500.11754/27183
- ISSN
- 0263-8223; 1879-1085
- DOI
- 10.1016/j.compstruct.2015.02.058
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > ARCHITECTURAL ENGINEERING(건축공학부) > Articles
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