TY - JOUR
T1 - Performance of steel I-beams strengthened by fastening hybrid FRP strips
AU - Abouel-Hamd, Omnia
AU - Sweedan, Amr
AU - El-Ariss, Bilal
N1 - Funding Information:
The authors would like to acknowledge the financial support provided by the Roadway Transportation and Traffic Safety Research Center (RTTSRC) at UAE University.
Publisher Copyright:
© 2020, Avestia Publishing. All rights reserved.
PY - 2020
Y1 - 2020
N2 - Fiber-Reinforced Polymers (FRPs) have been widely used in strengthening steel structures. Few researches were conducted to verify the adequacy of strengthening steel structures by fastening FRPs. The current paper reports on the outcomes of an experimental study aimed at strengthening steel I-beams by fastening hybrid FRP (HFRP) strips. A total of ten UB203x102x23 beams were tested in a four-point loading setup. Steel bolts were used to fasten the HFRP strips to the beam bottom flange. The effect of HFRP length was assessed by considering three scenarios (1,620, 1,170 and 810 mm) that correspond to 90%, 65% and 45% of the clear span length of tested beams. Single and double HFRP strips were utilized to evaluate the effect of HFRP thickness on the performance of the strengthened beams. Staggered and uniform bolt arrangements were used to assess the effect of bolt arrangement on the performance of the fastened systems. All strengthened beams exhibited better yield and ultimate strength as compared to the control beam. Fastening two HFRP strips with lengths of 90% of the beam clear span revealed 21% enhancement in the ultimate capacity of the strengthened beam.
AB - Fiber-Reinforced Polymers (FRPs) have been widely used in strengthening steel structures. Few researches were conducted to verify the adequacy of strengthening steel structures by fastening FRPs. The current paper reports on the outcomes of an experimental study aimed at strengthening steel I-beams by fastening hybrid FRP (HFRP) strips. A total of ten UB203x102x23 beams were tested in a four-point loading setup. Steel bolts were used to fasten the HFRP strips to the beam bottom flange. The effect of HFRP length was assessed by considering three scenarios (1,620, 1,170 and 810 mm) that correspond to 90%, 65% and 45% of the clear span length of tested beams. Single and double HFRP strips were utilized to evaluate the effect of HFRP thickness on the performance of the strengthened beams. Staggered and uniform bolt arrangements were used to assess the effect of bolt arrangement on the performance of the fastened systems. All strengthened beams exhibited better yield and ultimate strength as compared to the control beam. Fastening two HFRP strips with lengths of 90% of the beam clear span revealed 21% enhancement in the ultimate capacity of the strengthened beam.
KW - Bolt arrangement
KW - Four-point loading
KW - HFRP length
KW - HFRP thickness
KW - Hybrid fiber-reinforced polymers (HFRP)
KW - Strengthened beams
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U2 - 10.11159/iccste20.240
DO - 10.11159/iccste20.240
M3 - Conference article
AN - SCOPUS:85097220746
SN - 2369-3002
SP - 240-1-240-8
JO - International Conference on Civil, Structural and Transportation Engineering
JF - International Conference on Civil, Structural and Transportation Engineering
T2 - 5th International Conference on Civil, Structural and Transportation Engineering, ICCSTE 2020
Y2 - 12 November 2020 through 14 November 2020
ER -