Numerical study of dynamic behaviour of RC beams under cyclic loading with different loading rates

Xiao, Shiyun

doi:10.1680/macr.14.00239

Cited by 20 publications

(8 citation statements)

References 25 publications

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“…According of numerical simulation results on RC structural members under dynamic loading [58,115,117,119,170,171], it can be concluded that with the increase of loading rate, the bearing capacity and stiffness of structural members are enhanced whereas the deformation ductility is likely to be decreased. These numerical findings are in good agreement with the available dynamic loading test observations.…”

Section: Discussion On Numerical Simulation Workmentioning

confidence: 99%

“…These numerical findings are in good agreement with the available dynamic loading test observations. It has also been shown in a few studies the cracking pattern, damage and failure mode can be well through numerical analysis [58,117,129,130]. Moreover, parametric studies have been carried out to investigate the influences of structural parameters on the dynamic behaviors of RC structural members [15,58,116,171].…”

Section: Discussion On Numerical Simulation Workmentioning

confidence: 99%

“…On the contrary, the DIF method has been more commonly adopted by researchers. Quite a few studies have been performed by using this method to investigate the influences of dynamic effect on the seismic behaviors of RC members and structures [114][115][116][117][118][119]. The disadvantages of the DIF method are concluded as follows [113]: (1) It cannot fully reflect the adverse effects of dynamic effect on the structural displacement ductility and performance degradation; (2) The influence of dynamic effect on the shear and bond-slip behaviors of RC structural members is generally neglected.…”

Section: Overview Of Numerical Studies Considering Dynamic Effectmentioning

confidence: 99%

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Experimental, Theoretical and Numerical Research Progress on Dynamic Behaviors of RC Structural Members

Li¹,

Gao²,

Li³

et al. 2023

Preprint

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In this paper, the research progress on dynamic behaviors of RC structural members is reviewed from experimental, theoretical and numerical perspectives. Firstly, the basic overview, measurement methods, main conclusions and current limitations of available dynamic loading tests are presented. Then the theoretical studies on the dynamic constitutive models of RC materials, the dynamic increase factor (DIF) model for concrete and reinforcing steel and the proposed modified models of dynamic behavior parameter at the structural member level are summarized. Finally, the available modelling approach and the method for incorporating the dynamic effect in numerical simulation of RC structures are reviewed. Moreover, a brief introduction is made to the dynamic hysteretic model established on the experimental data, which provides an alternative approach to consider the dynamic effect beside the commonly used DIF method. This paper provides valuable reference for experimental studies and numerical simulations on the dynamic behaviors of RC structures, and also puts forward some issues that need to be solved in the future research works..

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Section: Discussion On Numerical Simulation Workmentioning

confidence: 99%

Section: Discussion On Numerical Simulation Workmentioning

confidence: 99%

Section: Overview Of Numerical Studies Considering Dynamic Effectmentioning

confidence: 99%

See 1 more Smart Citation

Experimental, Theoretical and Numerical Research Progress on Dynamic Behaviors of RC Structural Members

Li¹,

Gao²,

Li³

et al. 2023

Preprint

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“…For the steel bars (including longitudinal rebar and stirrups), a bilinear elasto-plastic model with kinematic hardening was adopted and this was similar with that in Xiao (2015). As shown in Figure 13(b), o–a is the elastic stage, a–b is the hardening stage, and the harding modulus (i.e.…”

Section: Fe Simulationmentioning

confidence: 99%

Experimental and numerical study of reinforced concrete beams with steel fibers subjected to impact loading

Jin

Zhang

Dou

et al. 2017

International Journal of Damage Mechanics

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As a kind of impact resistant material, steel fiber reinforced concrete (SFRC) has a good ductility and energy dissipation capacity by improving the tensile strength and impact toughness. To explore the dynamic mechanical behavior of SFRC beams subjected to impact loading, 12 simply-supported SFRC beams with different stirrup ratios (0%, 0.253% and 0.502%) and different volume fractions of steel fibers (0%, 1%, 2% and 3%) were tested with free-falling drop-weights impacting at the mid-span of specimens. The failure patterns were observed and videoed, and simultaneously, the time histories of the impact force, the reaction force, and the mid-span deflection were recorded. Moreover, the influences of stirrup ratio and volume fraction of steel fibers on the impact resistant behavior of the SFRC beams were preliminarily analyzed and discussed. The results indicate that the impact resistant performance of SFRC beams, such as crack pattern, ductility, energy consumption capacity, and deformation recovery capacity can be improved by the addition of steel fibers and stirrups. The required static capacity of these beams were calculated based on the analysis of reaction force vs. displacement loop and impact force vs. displacement loop as well as absorbed energy ratio. For further understanding the experimental results, finite element simulation of SFRC beams subjected to impact loading were carried out. The rationality and accuracy of the finite element model was illustrated by the good agreement between the test observations and the numerical results.

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“…Among them, the experimental method [9] is the most convincing; however, the test data are limited due to the large financial and human costs. As an alternative, some scholars have made attempts to establish numerical models to simulate the dynamic mechanical behaviors of structural members [10][11][12][13] and further develop empirical models of dynamic increase factor (DIF) to estimate the critical mechanical behavior parameters [14][15][16][17]. Based on the dynamic loading test results and the Bayesian updating method, Li et al [18] developed predictive models of the dynamic modified coefficient (DMC) for RC columns, which can be used to estimate the dynamic mechanical behaviors of RC columns under seismic loading.…”

Section: Introductionmentioning

confidence: 99%

Application of Random Forest Algorithm in Estimating Dynamic Mechanical Behaviors of Reinforced Concrete Column Members

Li,

Zhu

et al. 2024

Applied Sciences

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In this paper, an innovative method is put forward for estimating the dynamic mechanical behaviors of reinforced concrete (RC) column members by applying the random forest algorithm. Firstly, the development of dynamic modified coefficient (DMC) predictive models and the realization of the proposed method were elaborated. Then, due to the lack of dynamic loading tests on RC column members, a numerical model of RC columns considering the dynamic modification on flexural, shear and bond-slip behaviors was developed on the OpenSees platform, and the model accuracy and the effectiveness were verified with the available test results. Moreover, by comparing the simulated results of the hysteretic curve using numerical models with different complexities, the influences of dynamic modification and the deformation sub-element were investigated. Furthermore, a numerical experiment database was established to obtain the training data for developing the DMC predictive models of critical mechanical behavior parameters, including the yielding bearing capacity, ultimate bearing capacity and displacement ductility. Finally, the results of feature importance for different input parameters were studied, and the model accuracy was evaluated using the test set and available experimental data. It was revealed that the predictive models developed using the random forest algorithm can be employed to reliably estimate the dynamic mechanical behaviors of RC column members.

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Numerical study of dynamic behaviour of RC beams under cyclic loading with different loading rates

Cited by 20 publications

References 25 publications

Experimental, Theoretical and Numerical Research Progress on Dynamic Behaviors of RC Structural Members

Experimental, Theoretical and Numerical Research Progress on Dynamic Behaviors of RC Structural Members

Experimental and numerical study of reinforced concrete beams with steel fibers subjected to impact loading

Application of Random Forest Algorithm in Estimating Dynamic Mechanical Behaviors of Reinforced Concrete Column Members

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