Parametric study on skew-curved RC box-girder bridges

Agarwal, Preeti; Pal, Priyaranjan; Mehta, PK

doi:10.1016/j.istruc.2020.08.025

Cited by 15 publications

(9 citation statements)

References 10 publications

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“…The structural response of the box-girder bridges is evaluated to assess its behavior. The validation of present results has been done to check the suitability of the adopted methodology, presented in the literature by Agarwal et al [35]. Here, the analyses are divided into two parts, i.e., static analysis and free vibration analysis.…”

Section: Discussionmentioning

confidence: 89%

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Box-Girder Bridges - Modelling and Analysis

2022

IJEM

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The box-girder bridge has become very popular lately due to its serviceability, stability, and structural efficiency. The study of such a bridge requires analytical, experimental, or numerical methods. The structural behavior of the box-girder bridge is very complex and is quite cumbersome to be investigated by conventional methods. This paper presents a modelling process for the analysis of simply supported reinforced concrete (RC) box-girder bridges (straight, skew, curve, and skew-curved) using the finite element method under Indian loading conditions. This modelling process is developed on the basis of the Codal provisions of Indian Road Congress (IRC) 6:2017 and IRC 21:2000, and its implementation is quite simple as it avoids the cumbersome calculations and requires less time. Different values of the span, span-depth ratio, and the number of cells are considered to suit the requirements, and limiting criteria for stresses and deflection are checked. The static and free vibration analyses are carried out, and the results are compared to control the applicability of the proposed modelling process. The present modelling process is applied to analyse the RC box-girder bridges up to 50 m spans, and no erection procedure is included. However, one may follow the proposed modelling procedure for any box-girder bridge for its analysis.

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Section: Discussionmentioning

confidence: 89%

“…Gupta and Kumar [34] analysed the Han-Jiang bridge of span length 27.4 m, located at Shayang located in Wuhan, China. The skew-curved concrete box-girder bridge was analysed under Indian specification using CSiBridge software [35]. The model was discretized into four noded shell elements with six degrees of freedom at each node.…”

Section: Introductionmentioning

confidence: 99%

Box-Girder Bridges - Modelling and Analysis

2022

IJEM

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“…Agarwal et al [13] investigate the effect of different parameters i.e., skew angle span, spandepth ratio and girder spacing on maximum bending moment, shear force, torsional moment, stresses and deflection on both the girders of bridges due to combined dead and live loads using finite element based SAP2000 software. Agarwal et al [14] also investigated the effect of skew and curve angles on the bending moment, shear force, torsional moment and vertical deflection of skew-curved bbox-girder bridge using finite element method. Most of the researchers have studied the composite curved bridges under AASTHO loadings; only a few literature are available on reinforced concrete bridges.…”

Section: Girder Bridgementioning

confidence: 99%

Effect of Curve Angle on Single Cell Box-Girder Bridge

Agarwal¹,

Pal²,

Mehta³

2022

ASPS Conf. Proc.

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The behaviour of curved box-girder bridge is quite different from the straight one as it is experienced by the additional torsional moments. The analysis and design of such box-girder bridges are quite complicated when the curve angle is varied. The effect of curve angle on the forces and deflection in the girders, inner and outer, of a simply supported single cell reinforced concrete curved box-girder bridge is investigated in this study. A Finite element based software, CSiBridge v.20, was used for the analysis. A convergence study was performed on the proposed model to select the optimum mesh size and the results obtained are validated with the published literature. The variation of absolute values of forces and deflection along both the girders, under dead load (DL) and IRC (Indian Road Congress) live load (LL), is observed and the equations are proposed for their prediction in terms of non-dimensional parameters, using the statistical approach. The present results may be helpful to the designers in the analysis and design of curved single cell reinforced concrete box-girder bridges.

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“…skew angle, span, span-depth ratio and girder spacing on a single-cell reinforced concrete (RC) skew box-girder bridge are investigated [22]. Further, the authors investigated the combined effect of skew and curve angles on the responses of the box-girder bridge [23]. The effect of these parameters on the bending moment, shear force, torsional moment, stresses and deflection are determined.…”

Section: Introductionmentioning

confidence: 99%

Free Vibration Analysis of RC Box-Girder Bridges Using FEM

Agarwal¹,

Pal²,

Mehta³

2022

Sound&Vibration

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The free vibration analysis of simply supported box-girder bridges is carried out using the finite element method. The fundamental frequency is determined in straight, skew, curved and skew-curved box-girder bridges. It is important to analyse the combined effect of skewness and curvature because skew-curved box-girder bridge behaviour cannot be predicted by simply adding the individual effects of skewness and curvature. At first, an existing model is considered to validate the present approach. A convergence study is carried out to decide the mesh size in the finite element method. An exhaustive parametric study is conducted to determine the fundamental frequency of box-girder bridges with varying skew angle, curve angle, span, span-depth ratio and cell number. The skew angle is varied from 0°to 60°, curve angle is varied from 0°to 60°, span is changed from 25 to 50 m, span-depth ratio is varied from 10 to 16, and single cell & double cell are used in the present study. A total of 420 bridge models are used for parametric study in the investigation. Mode shapes of the skew-curved bridge are also presented. The fundamental frequency of the skew-curved box-girder bridge is found to be more than the straight bridge, so, the skew-curved box-girder bridge is preferable. The present study may be useful in the design of box-girder bridges.

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Parametric study on skew-curved RC box-girder bridges

Cited by 15 publications

References 10 publications

Box-Girder Bridges - Modelling and Analysis

Box-Girder Bridges - Modelling and Analysis

Effect of Curve Angle on Single Cell Box-Girder Bridge

Free Vibration Analysis of RC Box-Girder Bridges Using FEM

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