TY - CHAP
T1 - An Analytical Approach for Evaluating the Impact Response of Steel Fiber Reinforced Concrete Beam
AU - Bakhshi, Mohammad
AU - Ramezansefat, Honeyeh
AU - Rezazadeh, Mohammadali
AU - Valente, Isabel
AU - Barros, Joaquim A.O.
N1 - Funding information: The study reported in this paper is part of the project “PufProtec—Prefabricated Urban Furniture Made by Advanced Materials for Protecting Public Built” with the reference of (POCI-01-0145-FEDER-028256) supported by FEDER and FCT funds. The third author also acknowledges the support provided by FEDER and FCT funds within the scope of the project StreColesf (POCI-01-0145-FEDER-029485).
PY - 2021/8/1
Y1 - 2021/8/1
N2 - In this paper, a new approach is proposed for predicting reaction force in simply supported steel fiber reinforced concrete (SFRC) beams under impact loading (drop weight test) considering the energy conservation approach. If SFRC beams completely fail under impact load, it can be found that the total reaction force is equal to force capacity of SFRC beams. The force-deflection relationship can show the peak force that the SFRC beam can carry under impact load. Since concrete is a material sensitive to loading rates, the strain rate of loading and also the volume fraction of steel fiber will influence the beam’s response. The force-deflection relationship of the SFRC beam under impact loading is obtained using the proposed model. This model considers the effect of volume fraction of steel fiber and also the strain rate on the concrete properties. The model is then verified with the results collected from the literature that include 189 SFRC beams tested under drop-weight impacts and included in a database. The results obtained show that this method can estimate the maximum impact force with acceptable accuracy.
AB - In this paper, a new approach is proposed for predicting reaction force in simply supported steel fiber reinforced concrete (SFRC) beams under impact loading (drop weight test) considering the energy conservation approach. If SFRC beams completely fail under impact load, it can be found that the total reaction force is equal to force capacity of SFRC beams. The force-deflection relationship can show the peak force that the SFRC beam can carry under impact load. Since concrete is a material sensitive to loading rates, the strain rate of loading and also the volume fraction of steel fiber will influence the beam’s response. The force-deflection relationship of the SFRC beam under impact loading is obtained using the proposed model. This model considers the effect of volume fraction of steel fiber and also the strain rate on the concrete properties. The model is then verified with the results collected from the literature that include 189 SFRC beams tested under drop-weight impacts and included in a database. The results obtained show that this method can estimate the maximum impact force with acceptable accuracy.
KW - Concrete beam
KW - Drop weight test
KW - Steel fiber reinforced concrete
KW - Strain rate
UR - http://www.scopus.com/inward/record.url?scp=85112630159&partnerID=8YFLogxK
U2 - 10.1007/978-3-030-76547-7_2
DO - 10.1007/978-3-030-76547-7_2
M3 - Chapter
AN - SCOPUS:85112630159
SN - 9783030765460
T3 - RILEM Bookseries
SP - 15
EP - 30
BT - Proceedings of the 3rd RILEM Spring Convention and Conference (RSCC2020)
A2 - Pereira, Eduardo B.
A2 - Barros, Joaquim A. O.
A2 - Figueiredo, Fabio P.
PB - Springer
CY - Cham
ER -