On the Reliability of Serviceability Calculations for Flexural Cracked Reinforced Concrete Beams

Xu, Tengfei; Castel, Arnaud; Gilbert, Raymond Ian

doi:10.1016/j.istruc.2018.01.001

Cited by 22 publications

(5 citation statements)

References 45 publications

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“…have been employed as generalized load effect (Ellingwood and Tallin, 1984). The failure of SLS indicates that the mechanical index under external loads exceeds the corresponding allowable value, for instance, when deformation is selected for SLS reliability analysis, the failure of SLS can be deemed to occur once a deformation exceeding the corresponding limit (Galambos and Ellingwood 1986; Ghasemi and Nowak, 2016; Honfi et al, 2012; Stewart, 1996; Xu et al, 2018; Val and Chernin, 2009).…”

Section: A Brief Review On Structural Sls Reliabilitymentioning

confidence: 99%

Permit checking of overloaded customized transport vehicle based on serviceability limit state reliability of concrete bridges

Yuan

Han

et al. 2020

Advances in Structural Engineering

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To increase the authorization efficiency of overloaded customized transport vehicle (CTV), a serviceability limit state (SLS) reliability based permit checking method for concrete bridges is proposed through the optimization towards critical load effect ratio. In this procedure, the SLS reliability of crack width and the SLS reliability of concrete stress in tensile region are analyzed for reinforced concrete (RC) and prestressed concrete (PC) structures, respectively. The durability requirements and a unified reliable level can be concentrated reflected by the optimized critical load effect ratio. The results show that it is unreasonable to take a uniform target reliability index for all routes in permit checking of CTV, a stricter authorization criterion should be adopted for a higher expected authorization frequency. For a specific route level, a fluctuant variation of critical load effect ratio can be found with the increasing of bridge span. By introducing an ultimate limit state (ULS) based safety checking procedure, it is found that the SLS based permit checking criterion is crucial and determinative for the authorization of CTV instead of the ULS.

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Section: A Brief Review On Structural Sls Reliabilitymentioning

confidence: 99%

Permit checking of overloaded customized transport vehicle based on serviceability limit state reliability of concrete bridges

Yuan

Han

et al. 2020

Advances in Structural Engineering

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“…There are also reliable computational methods for tackling challenging issues, including modeling fractures [15][16][17]. In order to forecast the shear resistance of SSFRC beams, some investigations have also looked into models based on the finite element approach [18,19]. However, due to the difficulty of the issue in general or the complexity of SSFRC beams in particular, anticipating its shear behavior requires substantial skill and highly programmable computers.…”

Section: Introductionmentioning

confidence: 99%

A data-driven approach for investigating shear strength of slender steel fiber reinforcedconcrete beams

Quan

Giang

Tan

2023

STCE

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Using a data-driven approach to study and predict the shear strength of slender steel fiber reinforced concretebeams has great applicability for the design and construction process. Based on the data-driven approach, anArtificial Neural Network (ANN) model with some hyperparameters optimized by Particle Swarm Optimization (PSO) algorithm is successfully built. The hidden two-layer ANN model with the number of neurons (5; 6) predicted shear strength with higher accuracy than the models proposed previously in the literature, withR2 = 0.9727 and RMSE = 31.9822 kN for the control dataset. By interpreting the results of the ANN model by the values of SHAP, including the Global SHAP value and SHAP independence plot, the order of influence of the variables on the shear strength value and the predictability of the ANN model can be arranged according to effective depth of section > beam width > longitudinal reinforcement ratio > steel fiber content > concretecompressive strength > shear span/effective depth ratio > fiber tensile strength > aggregate size. Fiber tensilestrength and aggregate size almost do not affect the shear strength value. An increase in the shear span-to-effective depth ratio reduces shear strength, which can be increased by increasing the value of effective depth of section, beam width, longitudinal reinforcement ratio, steel fiber content, and concrete compressive strength.The results of this paper are meaningful in the initial assessment of the shear strength of SSFRC, which helps to speed up the design process and reduce the cost of designing and testing SSFRC beams.

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“…It was seen that flexural and splitting tensile strengths of the experimental mix containing 75% bottom ash and 20% fly ash exceeded much more than the control sample. As can be seen from the previous studies, there are many studies on concrete performance using waste materials (Ghafoori and Bucholc, 1996;Topçu and Bilir, 2010a;Bilir, 2012;Singh and Siddique, 2013;Bilir, 2016;Lee et al, 2019;Karalar et al, 2022;Çelik et al, 2022;Qaidi et al, 2022;Aksoylu et al, 2022a) and other materials such as composite (Alam and Hussein, 2017;Truonga et al, 2017;Araba and Ashour, 2018;Bicer et al, 2018;Deng et al, 2018;Mahmood et al, 2018;Xu et al, 2018;Marvila et al, 2019;Azevedo et al, 2020;Wang et al, 2020;Azevedo et al, 2021;Özkılıç et al, 2021;Akın et al, 2022;Al-Rousan and Al-Muhiedat, 2022;Aksoylu et al, 2022b;Gemi et al, 2022;Huang et al, 2022;Lu et al, 2022;Tran et al, 2022;Özkılıç et al, 2022) in the literature. Researchers have identified differences in the properties of concrete, but few have discussed how the trade-offs of using a fine natural aggregate in place of a typical Portland cement (PC) mix.…”

Section: Introductionmentioning

confidence: 99%

Use of recycled coal bottom ash in reinforced concrete beams as replacement for aggregate

et al. 2022

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In this research, it is studied the crack and flexural behavior of reinforced concrete beams with various bottom ash ratios (BARs) considered as fine aggregate in an experimental and numerical investigation. For experimental purposes, different concrete series are considered varying aggregate sizes ranging from 0 to 25 mm. To supplement concrete, bottom ash is put to use in conjunction with material from 0–5 mm in size aggregate particles as replacement for fine aggregates with ratios of 25%, 50%, 75%, and 100%. Experiments were done to investigate the behavior of the beams and how flexural and fracture behaviors are represented. 75% BARs gave optimum results in terms of displacement capacity. Increasing BAR to 100% decrease deflection capacity of the beam. Also, ANSYS software is used to build 3D finite element models (FEMs) of beams to compare with experiment data. Experimental and 3D numerical tests show exceptionally tight flexural and fracture behaviors. Following this, a computer-generated structure is made by running SAP 2000, and the strength of the beams is then utilised in an RC structural model. Every stage of the building’s construction is thoroughly assessed utilizing multiple types of seismic testing, employing the SAP2000 program, with the resulting analysis providing significant findings on how the seismic force of 75% BAR affects horizontal displacement of each floor. The results showed that the weight of the structure dramatically decreases as the number of columns and RCBs are raised while also increasing the number of BARs. Moreover, the magnitude of earthquake and BAR have a significant effect on the horizontal displacement behavior of reinforced concrete structures. The strength of the concrete structure varies between close- and far-fault earthquakes, and for close-fault earthquakes, concrete strength is stronger than for far-fault earthquakes. This brings us to the second disadvantage of BAR which is the 75% strain produces a severe displacement of reinforced concrete structures. Besides, it was seen that the simulations and experiments yield tiny cracks with very identical configurations.

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On the Reliability of Serviceability Calculations for Flexural Cracked Reinforced Concrete Beams

Cited by 22 publications

References 45 publications

Permit checking of overloaded customized transport vehicle based on serviceability limit state reliability of concrete bridges

Permit checking of overloaded customized transport vehicle based on serviceability limit state reliability of concrete bridges

A data-driven approach for investigating shear strength of slender steel fiber reinforcedconcrete beams

Use of recycled coal bottom ash in reinforced concrete beams as replacement for aggregate

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