Anti-explosion and protection of engineering structures
Author:
Affiliation:

1.Tianjin Key Laboratory of Civil Structure Protection and Reinforcement, Tianjin Chengjian University, Tianjin 300384, P. R. China;2.Tianjin Construction Engineering Co., Ltd. of China Railway First Engineering Group, Tianjin 300250, P. R. China;3.Key Laboratory of Coast Civil Structure Safety of Ministry Education, Tianjin University, Tianjin 300456, P. R. China

Clc Number:

TU375.1

Fund Project:

Scientific Research Projects of Tianjin Municipal Education Commission (No. 20140909)

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    Abstract:

    Drop hammer test was carried out on five reinforced concrete (RC) beams which include one as-built RC beam, two reinforced with basalt fiber rebar (BRRC) and two reinforced basalt textile (BTRC) by using drop hammer impact testing machine. The damage process, impact force time-history curve, reaction force time-history curve, deformation time-history curve, impact force-deformation curve and reaction force-deformation curve were analyzed to study the impact characteristics of the RC beams reinforced with BTRC or BRRC. Results indicate that BTRC and BRRC can significantly increase the impact load-carrying capacity, thus decreasing the peak deformation and residual deformation of the beams. The reinforcement layouts and FRP amount have marginal influence on the deformation of the beams. Part of the kinematic energy of the drop hammer can be dissipated due to the fracture of fiber net or debonding of anchor end of fiber reinforcement, resulting in lower internal energy of the reinforced beams in comparison with that of the as-built RC beam.

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吕杨,张煜,吴学乾,王大永,张永权,张学杰.BTRCBRRC加固混凝土梁的抗冲击性能试验研究[J].土木与环境工程学报(中英文),2023,45(1):25~34

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History
  • Received:April 17,2021
  • Revised:
  • Adopted:
  • Online: February 20,2023
  • Published:
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