A FEM-based model to study the behavior of SRG-strengthened R/C beams

Katsamakas, Antonios A.; Papanikolaou, Vassilis K.; Thermou, Georgia E.

doi:10.1016/j.compstruct.2021.113796

Cited by 15 publications

(14 citation statements)

References 32 publications

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“…FEM is an effective way for the modern numerical calculation, which has been widely used in engineering practice [21,22]. Hence, the FEM was used in this research to verify the accuracy and precision of the force of fully cantilever supporting system before calculating it by eqs.…”

Section: Fem Verificationmentioning

confidence: 99%

Comparative Analysis of Three Typical Cantilever Scaffold Supporting Systems

Geng¹,

Dai

et al. 2021

Preprint

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In order to effectively guide the selection of scaffold in designing the cantilever scaffold, comprehensive analyses of three typical scaffold supporting systems (including fully cantilever, bottom-supporting cantilever and pull-up cantilever) are carried out. The calculation formulas of the internal force for the three scaffold supporting systems are proposed based on the theoretical analysis, which are effectively verified by the finite element method (FEM). In addition, the force mechanism and benefits of the three scaffold supporting systems are compared and analyzed combined with actual engineering. The results indicate that there is high calculating accuracy for the proposed internal force and deflection calculation formulas about the scaffold supporting systems. According to the distribution uniformity of the internal force and controlling of the deformation of the main girder, the bottom-supporting cantilever system is undoubtedly the best choice. While the pull-up cantilever supporting system is the best choice when considering the aspects of cost, construction period and social benefits, which ought to be popularized in engineering practice.

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Section: Fem Verificationmentioning

confidence: 99%

Comparative Analysis of Three Typical Cantilever Scaffold Supporting Systems

Geng¹,

Dai

et al. 2021

Preprint

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“…Numerous studies have been conducted to analyze the cantilever wall deflection using various methods, such as field measurements [7][8][9], centrifuge modelling tests [10,11], numerical analyses [12][13][14][15][16], and analytical methods [17][18][19]. Zhou et al [9] analyzed the monitoring data of diaphragm wall deflection using a Bayesian network.…”

Section: Introductionmentioning

confidence: 99%

“…Sert et al [13] studied the effect of soil spatial variability on the excavation-induced lateral wall deflection through a large number of numerical simulations. Zhang et al [16] developed a simplified polynomial regression model to predict the maximum wall deflection. More recently, Qi et al [19] developed an efficient probabilistic back-analysis method for braced excavations using wall deflection data at multiple points.…”

Section: Introductionmentioning

confidence: 99%

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Application of ANN in Predicting the Cantilever Wall Deflection in Undrained Clay

Huang

Zhang

2021

Applied Sciences

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The main objective of this study is to propose an artificial neural network (ANN)-based tool for predicting the cantilever wall deflection in undrained clay. The excavation width, the excavation depth, the wall thickness, the at-rest lateral earth pressure coefficient, the soil shear strength ratio at mid-depth of the wall, and the soil stiffness ratio at mid-depth of the wall were selected as the input parameters, whereas the cantilever wall deflection was selected as an output parameter. A set of verified numerical data were utilized to train, test, and validate the ANN models. Two commonly used performance indicators, namely, root mean square error (RMSE) and mean absolute error (MAE), were selected to evaluate the performance of the proposed model. The results indicated that the proposed model can reliably predict the cantilever wall deflection in undrained clay. Moreover, the sensitivity analysis showed that the excavation depth is the most important parameter. Finally, a graphical user interface (GUI) tool was developed based on the proposed ANN model, which is much easier and less expensive to be used in practice. The results of this study can help engineers to better understand and predict the cantilever wall deflection in undrained clay.

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“…Although this material has already been used in practical engineering projects such as Shinkansen in Japan, there is not yet any comprehensive research on its dynamic properties [4,5]. Analysis of the dynamic mechanical properties of concrete is of great significance to the study of structural response, which is often carried out from both the theoretical and experimental perspectives [6,7].…”

Section: Introductionmentioning

confidence: 99%

Dynamic Properties Test and Constitutive Relation Study of Lightweight Aggregate Concrete under Uniaxial Compression

Zhao

2021

Advances in Materials Science and Engineering

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For the purpose of studying the dynamic properties of lightweight aggregate concrete, dynamic performance tests under uniaxial compression were conducted by considering 10 different strain rates ranging from 10−5/s to 10−1/s, from which the stress-strain curves under various compressive loads were obtained. From the stress-strain curves, parameters including peak stress, peak strain, and elastic modulus of lightweight aggregate concrete, as well as the concrete failure mode, were determined and examined. By reviewing the relevant literature on ordinary concrete, the dynamic properties of lightweight aggregate concrete were analyzed accordingly. Meanwhile, by applying the dynamic elastoplastic damage constitutive model, the effect of dynamic rate on lightweight aggregate concrete was calculated. The experimental results showed that the damage mode of lightweight aggregate concrete under the static and dynamic strain rates belonged to shear failure, which is different from that of ordinary concrete (binding material failure). On the other hand, it was also found that the peak stress and elastic modulus of lightweight aggregate concrete could be increased by 54.48% and 28.75%, respectively, with the increase of strain rate, suggesting that the loading strain rate has a stronger influence on lightweight aggregate concrete than on ordinary concrete. Based on the experimental data, both the peak stress and nondimensionalized elastic modulus are in linear relationship with the logarithm of the nondimensionalized strain rate. Moreover, the established constitutive model had been verified as an effective and reliable tool for simulating the dynamic rate effect of lightweight aggregate concrete.

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A FEM-based model to study the behavior of SRG-strengthened R/C beams

Cited by 15 publications

References 32 publications

Comparative Analysis of Three Typical Cantilever Scaffold Supporting Systems

Comparative Analysis of Three Typical Cantilever Scaffold Supporting Systems

Application of ANN in Predicting the Cantilever Wall Deflection in Undrained Clay

Dynamic Properties Test and Constitutive Relation Study of Lightweight Aggregate Concrete under Uniaxial Compression

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