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\begin{document}

\title{Effect of Initial Crack-depth Ratio on Dynamic Fracture Properties of
FRP Strengthened Concrete}



\author[1]{Jueding Liu}%
\author[2]{fnq xiangqian}%
\author[3]{hu shaowei}%
\affil[1]{Tianjin University}%
\affil[2]{Affiliation not available}%
\affil[3]{Chongqing University}%


\vspace{-1em}



  
  \date{June 13, 2024}


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\begin{abstract}
Abstract: In order to study the dynamic fracture properties of FRP
strengthened concrete, the three-point bending experiment with different
initial crack-depth ratios was carried out under dynamic loading. The
effects of crack-depth ratios on the fracture parameters were analyzed.
Combined with Pearson Correlation Coefficient formula, the correlation
between crack-depth ratios and fracture parameters was quantitatively
verified. The conclusions could be drawn that, there are three critical
points in the damage process: the crack initiation point, first peak
point and ultimate bearing capacity point. With the increase of
crack-depth ratio, the crack initiation load decreases, but the first
peak load and ultimate load increase first and then decrease. The stress
intensity factors of three points also increase first and then decrease.
The increment of critical crack-depth ratio and flexibility coefficient
are related to crack-depth ratio, which could reflect the effect of
crack-depth ratio on the deformation capacity of FRP strengthened
concrete.%
\end{abstract}%



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