Deflections Considering Twist Angles for Curved Concrete Girders

Shen, Yin; Song, Taiyu; Li, Guoping; Yang, CS Walter; Scott, David W.

doi:10.14359/51715566

Cited by 4 publications

(3 citation statements)

References 11 publications

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“…Consequently, the authors of the current research urge the rest of the researchers to enrich this field. Song et al [9] and Shen et al [15] have studied the behavior of horizontally continuous curved box bridges experimentally and theoretically, calculating the deflection, bending, and torsional moments. The specimen (CT10-1) is considered, consisting of three spans: 3 + 3.75 + 3 m and a curvature radius of 10 m. The middle supports were placed with one support in the center, but the end supports were restrained against rotation along the beam axis using two supports, each with a distance of 35 cm symmetrically.…”

Section: Model Validationmentioning

confidence: 99%

Torsional Strength of Horizontally Curved Continuous Reinforced Concrete Box Girder Bridges

Dawood,

Abdul-Razzaq,

Abdulsahib

2023

ETJ

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Section: Model Validationmentioning

confidence: 99%

Torsional Strength of Horizontally Curved Continuous Reinforced Concrete Box Girder Bridges

Dawood,

Abdul-Razzaq,

Abdulsahib

2023

ETJ

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“…Through numerical models, researchers can simulate the complex behavior of these structures under different loading conditions, providing insights into their performance and identifying potential areas for improvement. Shen et al (Shen et al, 2019) provided a new method for calculating post-cracking twist angles in curved concrete girders. Agarwal et al (Agarwal et al, 2020) studied a single-cell reinforced concrete skew-curved box-girder bridge using the finite element method.…”

Section: Introductionmentioning

confidence: 99%

Torsional behavior of curved concrete box beam with small radius

Jiang,

Wang,

Nie

et al. 2023

Advances in Structural Engineering

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Curved concrete box beams are commonly used for their superior integrality performance and greater torsional stiffness. This paper investigates the torsional behavior of these beams using both experimental and finite element analyses. The experiment is based on a 1:6 scale model of a three-span curved girder bridge with a small radius. The study examines six different load cases, including central vertical and eccentric vertical loads. The study reports the detailed reaction forces of the supports, as well as the displacements and strains of the mid-span section. Finite element models are established to analyze the warping behavior of the curved concrete box beams. Based on the experimental and FEM analysis, the following conclusions are noted. Firstly, in the central load case, the strain of the curved concrete box girder is close to a straight line, so the curved concrete box girders follows the plane-section assumption. Besides, the warping normal stress is produced in curved concrete box girder in eccentric load cases. Moreover, the ratio of warping normal stress to bending normal stress is smaller and smoother in the section with diaphragms than that without diaphragms. And this ratio decreases with an increase in the curvature radius and diaphragm number. This study contributes to the theoretical and numerical modeling of a large span curved girder bridge with a small radius.

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“…Zhou et al [26] investigated the effects of the pre-twisted angle ratio on the structural behavior of steel box-section columns. Based on the concept of effective torsional stiffness, Shen et al [27] proposed a new method for calculating the post-cracking twist angles in girders to predict maximum deflections in curved concrete. Arici and Granata [28] analyzed the straight and curved thin-walled structures on elastic foundations using the Hamiltonian structural analysis method and proposed a unified comprehensive theory for closed and open thin-walled cross-sections, as well as compact sections, by considering non-uniform torsion and distortion plus torsional moment deformation effects.…”

Section: Introductionmentioning

confidence: 99%

Structural Performance of Thin-Walled Twisted Box-Section Structure

et al. 2021

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The light weight and high strength-to-mass ratio of thin-walled boxed sections have incited interest in their widespread use in the construction of domes. However, the installation of these sections in forming the dome geometry has induced initial twists and curving features, to which their mechanical response has rarely been explored. Therefore, the structural performance of a structure with thin-walled twisted box sections is numerically studied in this paper, employing ANSYS, the verification of which is carried out through a comparison with experimental results. Additional components examined include the longitudinal stiffening rib, diaphragm, and web. The effects of variations in the thicknesses of these member plates on the mechanical behaviors are investigated. In general, the ultimate capacity of the structure is improved by increasing the thickness of the longitudinal stiffening rib, diaphragm, and web, but the strengthening effect of the stiffener is limited by a certain thickness enhancement. The common failure mode of the initial model is found to be an overall elastic-plastic buckling. A reduction in the thickness of the stiffener or web creates a curving deformation zone in the lower arch at the ultimate capacity, whereas the diaphragm thickness has little effect on the failure mode of the model.

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Deflections Considering Twist Angles for Curved Concrete Girders

Cited by 4 publications

References 11 publications

Torsional Strength of Horizontally Curved Continuous Reinforced Concrete Box Girder Bridges

Torsional Strength of Horizontally Curved Continuous Reinforced Concrete Box Girder Bridges

Torsional behavior of curved concrete box beam with small radius

Structural Performance of Thin-Walled Twisted Box-Section Structure

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