Determination of the bending moment – curvature relationship for bridge concrete columns

Ćurić, Ivan; Radić, Jure; Franetović, Marin

doi:10.17559/tv-20131102175034

Cited by 2 publications

(1 citation statement)

References 1 publication

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“…This refers primarily to the ratio between stress and strain, which should be considered as close as possible to the actual behavior of the material (non-linear diagrams). The accurate determination of the bending moment to rotation diagram of reinforced concrete sections is a reliable indicator of the bearing capacity of elements under seismic loads [30,31].…”

Section: Introductionmentioning

confidence: 99%

Plastic Joints in Bridge Columns of Atypical Cross-Sections with Smooth Reinforcement without Seismic Details

et al. 2021

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In seismically active areas, knowledge of the actual behavior of bridges under seismic load is extremely important, as they are crucial elements of the transport infrastructure. To assess their seismic resistance, it is necessary to know the key indicators of their seismic response. Bridges built before the adoption of standards for seismic detailing may still contain structural reserves due to the properties of the used materials and construction approach. For example, smooth reinforcement which is found in older bridges due to the material properties, detailing principles, and lower bond strength compared to ribbed reinforcement, allows for greater deformations. In bridges, columns are vital elements employed in the dissipation of seismic energy. Their cross-sections often deviate from the regular square, rectangular, or round cross-sections, which are typically found in building. Based on the behavior of the columns in the vicinity of potential plastic joints, we can determine their deformability. This paper presents an experimental study of seismic resistance indicators around a potential plastic joint for a column with an atypical cross-section, without seismic details and with smooth reinforcement. The experimental results are compared with the numerical and analytical, but also with the experimental results on samples with ribbed reinforcement. Conclusions are made about the behavior of such column elements and their seismic resistance indicators, allowing for the application of an analytical or numerical method with realistic material and element properties and derivation of correction factors due to the effect of the smooth-reinforcement slippage from the anchorage area.

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Section: Introductionmentioning

confidence: 99%

Plastic Joints in Bridge Columns of Atypical Cross-Sections with Smooth Reinforcement without Seismic Details

et al. 2021

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Investigation of Nonlinear Behavior of the Reinforced Concrete Columns for Different Confined Concrete Models

Foroughi¹,

Yüksel²

2022

Politeknik Dergisi

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Stress-strain and moment-curvature behavior of the reinforced concrete (RC) square columns have been analytically investigated according to different confined concrete models. Figure. Stress-strain and moment-curvature relationships for reinforced concrete columns AimInvestigations of the effect of transverse reinforcement ratio and axial load on the behavior of the reinforced concrete square columns are the main purpose of this study. Design & MethodologyTo better understand the non-linear behavior, information was provided about stress-strain behavior models recommended by the TBEC (2018), Mander et al., (1988), Saatcioglu and Ravzi (1992. Using the proposed models of confined concrete compressive strength of the RC column models were investigated analytically. OriginalityThe literature on the confined concrete models has been reviewed and the stress-strain and moment-curvature relationships of reinforced concrete elements have been calculated according to the current TBDY (2018) regulation. Comparison of the nonlinear behaviors obtained from the TBDY (2018) and the confined concrete models found in the literature has been a current study on behalf of the literature. FindingsThe greatest ultimate curvature values were calculated from the Saatcioglu and Ravzi models (average 24%). In the examination of ultimate curvature values obtained according to the Mander model and TBEC, there is not much difference. There is a negligible difference between the ultimate moment values obtained according to the Mander model and TBEC. It is seen from the results of the analysis that there is not much difference between the stress and strain values obtained for these two models. According to Mander, Saatcioglu and Ravzi models, the average difference value is 3.1% between the ultimate moment values. ConclusionAs a result, it has been observed that when the close to minimum and minimum spacing value, high confined concrete strength values and the ultimate moment values are obtained from the Mander model than Saatcioglu and Ravzi model. These differences are not much between the Mander model and TBEC (2018).

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Determination of the bending moment – curvature relationship for bridge concrete columns

Cited by 2 publications

References 1 publication

Plastic Joints in Bridge Columns of Atypical Cross-Sections with Smooth Reinforcement without Seismic Details

Plastic Joints in Bridge Columns of Atypical Cross-Sections with Smooth Reinforcement without Seismic Details

Investigation of Nonlinear Behavior of the Reinforced Concrete Columns for Different Confined Concrete Models

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