Experimental study of reinforced concrete beams reinforced with hybrid spiral-hooked end steel fibres under static and impact loads

Hao, Yifei; Xiao, DanDan; Hao, Hong; Li, Jun; Li, Jie

doi:10.1177/13694332221113045

Cited by 3 publications

(1 citation statement)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In contrast, Wei [4] suggested an ultra-high performance fiber-reinforced concrete column to replace RC columns susceptible to vehicle impact and studied its mechanical properties under such circumstances. Hao [5] conducted an experimental study of RC beams reinforced with hybrid spiral-hooked end steel fibers under impact loads. Sennah [6] performed vehicle crash tests on a new type of RC bridge guardrail.…”

Section: Introductionmentioning

confidence: 99%

Model test and numerical analysis of height restriction frame to over-height vehicle impact

Zhou,

Guo,

Zhang

et al. 2023

J. vibroeng.

View full text Add to dashboard Cite

This study develops a simplified model incorporating an over-height vehicle and the height restriction frame (HRF) to explore the failure modes and mechanical properties of the HRF when subjected to an impact from the over-height vehicle. Within the study context, rigorous model tests have been constructed for simulation analysis. The validity of these numerical simulations is confirmed by comparing the test results to the calculated outcomes. The study also analyzes the dynamic response of vehicles varying in speed and weight when impacting the HRF. The findings reveal that most of the beam's displacement can be attributed to the column's overturning, while a lesser portion is due to the plastic deformation of the beam. The column's displacement is primarily caused by its own overturning. Both the beam and the column's base demonstrate evidence of elastoplastic deformation. It is observed that the displacement and stress of crucial nodes rise with the increase in vehicle speed and weight. Vehicle speed emerges as the predominant factor influencing the impact force of the vehicle when compared to the vehicle's weight. Furthermore, the increase in vehicle weight extends the collision time between the vehicle and the HRF, indicating that the weight of the vehicle plays a significant role in the column's overturning. The study findings can potentially serve as both an experimental and theoretical reference for the design and calculation of the HRF.

show abstract

Section: Introductionmentioning

confidence: 99%

Model test and numerical analysis of height restriction frame to over-height vehicle impact

Zhou,

Guo,

Zhang

et al. 2023

J. vibroeng.

View full text Add to dashboard Cite

show abstract

Fracture properties of basalt-fiber-reinforced bridge concrete under dynamic fatigue loading

et al. 2023

View full text Add to dashboard Cite

Bond Behavior between High-Strength Rebar and Steel-Fiber-Reinforced Concrete under the Influence of the Fraction of Steel Fiber by Volume and High Temperature

Cui

et al. 2023

Applied Sciences

View full text Add to dashboard Cite

Steel-fiber-reinforced concrete (SFRC) is a composite material made by randomly distributing short steel fibers in normal concrete (NC). In this study, central pull-out tests of 32 specimens were performed to investigate the bond behavior between high-strength rebar and SFRC under the influence of the fraction of steel fiber by volume (Vf = 0%, 0.5%, 1.0% and 1.5%) and temperature (T = 20, 200, 400 and 600 °C). The results show that in NC specimens, splitting failure occurs below 400 °C, while split-pullout failure occurs above 600 °C. Split-pullout failure occurs in all SFRC specimens at each tested temperature. The bond strength between rebar and SFRC was found to decay significantly between 400 and 600 °C. The effect of Vf on the improvement in bond strength was more obvious between 400 and 600 °C than between 20 and 400 °C. The positive contribution of steel fibers to bond behavior is the construction of a rigid skeleton with coarse aggregates that can play a bridging role and effectively retard the expansion of concrete cracks. This improves the bond strength between rebar and SFRC at high temperatures. The bond–slip curve can be divided into five stages, namely the initial micro-slide phase, slip phase, splitting failure phase, stress drop phase and residual pull-out phase. A model of the bond–slip relationship between rebar and SFRC considering temperature and Vf was developed by modifying the existing model of the bond–slip relationship between rebar and NC. The model calculation results agree well with those of testing.

show abstract

Experimental study of reinforced concrete beams reinforced with hybrid spiral-hooked end steel fibres under static and impact loads

Cited by 3 publications

References 30 publications

Model test and numerical analysis of height restriction frame to over-height vehicle impact

Model test and numerical analysis of height restriction frame to over-height vehicle impact

Fracture properties of basalt-fiber-reinforced bridge concrete under dynamic fatigue loading

Bond Behavior between High-Strength Rebar and Steel-Fiber-Reinforced Concrete under the Influence of the Fraction of Steel Fiber by Volume and High Temperature

Contact Info

Product

Resources

About