Experimental and numerical study on the in-plane behaviour of concrete-filled steel tubular arches with long-term effects

Han, Xu; Han, Bing; Xie, Huibing; Yan, Wu; Qi, Ma

doi:10.1016/j.tws.2021.108507

Cited by 8 publications

(2 citation statements)

References 26 publications

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“…The hexahedron shape was chosen as the basic element, and FE analysis utilized sweep technology combined with an advanced front algorithm [22]. The prestress tendons were simulated with the two-node linear 3D truss element T3D2.…”

Section: Element Selection and Mesh Divisionmentioning

confidence: 99%

Long-Term Deflection Analysis of Large-Span Continuous Prestressed Concrete Rigid-Frame Bridges Based on a Refined Modeling Approach

Han,

Li,

2023

Applied Sciences

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Numerical modeling approaches are favored for performing long-term analyses of continuous prestressed concrete rigid-frame (CPCR) bridges due to the complexity and high cost of experimental testing on such structures. In this study, a refined numerical modeling approach is first presented and validated by comparing the field monitor data of an existing long-span CPCR bridge in China. Then, long-term deflection analysis—considering box girder cracks, concrete creep, joint damage behavior and prestress—is conducted based on the proposed refined modeling approach. It is found that the time-dependent loss of longitudinal prestress has the most significant influence on the long-term structural stiffness, while joint damage between different segments has limited impact on overall structural performance, especially for large-span bridge cases. The local stress distribution is significantly influenced by typical damage, albeit with a different scope of impact. Therefore, targeted reinforcement has to be performed to achieve satisfactory repair results under different damage conditions.

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Section: Element Selection and Mesh Divisionmentioning

confidence: 99%

Long-Term Deflection Analysis of Large-Span Continuous Prestressed Concrete Rigid-Frame Bridges Based on a Refined Modeling Approach

Han,

Li,

2023

Applied Sciences

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“…Long-term effects on structures also lead to the need to strengthen them [22]. As the service life increases, the mechanical characteristics deteriorate due to the properties of filled concrete that wear out over time.…”

Section: Analysis Of Previous Researchmentioning

confidence: 99%

A Calculation Model for Determining the Bearing Capacity of Strengthened Reinforced Concrete Beams on the Shear

et al. 2023

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This article presents research on the bearing capacity and methods of calculating reinforced concrete beams on the shear without internal shear reinforcement, which are strengthened with a composite FRCM system. The test samples were divided into two series: the first series—control, in which the variable parameter was the shear span (a/d = 2, a/d = 1.5, and a/d = 1); and the second series—reinforced by the FRCM system, without load, and strengthened at different load levels. The method of calculating experimental beams was tested according to the current code and data from the fib report. In this article, recommendations for determining the angle of inclined struts θ, the coefficient of the concrete shear strength CRd,c, and the coefficient of the load level at which strengthening is performed are proposed. The calculation with the these recommendations showed a good convergence of experimental and theoretical data in the 16–29% range, which is a much higher convergence than the calculation without these recommendations.

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Seismic stability analysis of the large-span concrete-filled steel tube arch bridge considering the long-term effects

Han

Han²,

Xie³

et al. 2022

Engineering Structures

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Experimental and numerical study on the in-plane behaviour of concrete-filled steel tubular arches with long-term effects

Cited by 8 publications

References 26 publications

Long-Term Deflection Analysis of Large-Span Continuous Prestressed Concrete Rigid-Frame Bridges Based on a Refined Modeling Approach

Long-Term Deflection Analysis of Large-Span Continuous Prestressed Concrete Rigid-Frame Bridges Based on a Refined Modeling Approach

A Calculation Model for Determining the Bearing Capacity of Strengthened Reinforced Concrete Beams on the Shear

Seismic stability analysis of the large-span concrete-filled steel tube arch bridge considering the long-term effects

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