Experiment study on temperature field and effect on steel-concrete composite bridge towers

Zhang, Han-Shuo; Zhao, Yao; Ruan, Jing; Nie, Xin; Fan, Jian-Sheng; Liu, Yu Fei

doi:10.1016/j.istruc.2023.02.058

Cited by 12 publications

(3 citation statements)

References 7 publications

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“…For example, thermally induced variations in girder length and mid-span de-flection [13] and thermal time lags and gradients of the steel box girder [14][15][16][17][18] were investigated for long-span bridge based on the SHM system, moreover, the temperature distributions of the Tsing Ma Bridge [19,20] and Benniu Bridge [21] have been investigated using the monitoring data. In addition, the temperature effects on concrete and steel-concrete bridges were also discussed [22][23][24].…”

Section: Introductionmentioning

confidence: 99%

Investigation of Temperature Effects on Wide Steel Box Girder of Suspension Bridge Based on Long-Term Monitoring Data

Wang,

Zhang,

Liu

et al. 2024

Preprint

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The time-varying temperature distributions on bridge structures may remarkably change structural performance, which may result in differential strain/stress responses on structural members compared with the design conditions. Therefore, it is crucial to have a comprehensive understanding of temperature distributions and its effects on bridges. In this study, taking advantage of structural health monitoring technology, one-year field monitoring data collected from a long-span suspension bridge were used to investigate the temperature distributions and their effects on the steel box girder. Specifically, the distributions and probability statistics of temperatures on the top and bottom plates were firstly analyzed. Based on which, the transverse and vertical temperature differences on the box girder were further examined, moreover, the representative values of temperature differences for various return periods were calculated by exceedance probability method. At end, a temperature prediction method was proposed to simulated the temperature field distributions during bridge life cycle, to provide substantial temperature data for estimating future operation condition. The results of this study were beneficial to structural evaluation of in-service bridges to ensure their serviceability and integrity in the life cycle.

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Section: Introductionmentioning

confidence: 99%

Investigation of Temperature Effects on Wide Steel Box Girder of Suspension Bridge Based on Long-Term Monitoring Data

Wang,

Zhang,

Liu

et al. 2024

Preprint

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“…The steel-concrete composite bridge deck system fully utilizes the tensile strength of steel and the compressive strength of concrete [1,2]. It has been widely adopted in the design and construction of various large-span bridges due to its high structural stiffness, lightweight properties, and reduced deflection [3][4][5][6]. Over the past several decades, researchers have conducted theoretical and experimental studies [7][8][9][10] to verify the excellent performance of the steel-concrete composite bridge deck system during the service life of bridge structures.…”

Section: Introductionmentioning

confidence: 99%

Design and Optimization of the Bi-Directional U-Ribbed Stiffening Plate–Concrete Composite Bridge Deck Structure

Wei,

Liao,

Liu

et al. 2023

Applied Sciences

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The steel–concrete composite structure is widely used in civil engineering for large-span bridges. Orthotropic steel bridge decks (OSDs) have particularly gained popularity due to their excellent mechanical performance. To address cracking issues in OSDs and concrete in negative moment regions, a novel bi-directional U-ribbed stiffening plate (BUSP)–concrete composite bridge deck is proposed. By using finite element analysis, the mechanical performance is evaluated based on maximum tensile stress and vertical displacement of concrete overlays. Results show that the BUSP–concrete deck outperformed conventional flat decks. It is also found that increasing the height, thickness, and opening width of U-ribs reduced tensile stress and maximum displacement. Adjusting height had the most significant effect on displacement while opening width affected tensile stress the most. Considering material usage, optimizing height is proved to be more effective than adjusting thickness and opening width. Decreasing spacing parameters improved performance but added complexity and reduced construction convenience. These findings will guide the design and optimization of steel–concrete composite bridge deck structures.

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“…Currently, the existing research both domestically and internationally primarily focuses on the temperature field and temperature effects of concrete bridges and steelconcrete composite bridges [7][8][9][10][11][12]. However, there is insufficient investigation into the temperature field of double-layer steel trusses.…”

Section: Introductionmentioning

confidence: 99%

Temperature Response of Double-Layer Steel Truss Bridge Girders

Wang,

Zhang,

et al. 2023

Buildings

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Double-layer steel truss continuous girders are prone to significant temperature stress, deviation, torsion, and warping, thus causing adverse temperature structural responses, and also affecting the safety and durability of bridge structures. This paper presents an investigation on time-dependent characteristics in the temperature field and temperature response of double-layer steel truss continuous bridge girders, fully considering the shielding effect subjected to different solar radiation angles during the high-temperature season. The time-dependent thermal boundary conditions and support conditions provided for the steel truss bridge structure were determined. Subsequently, a thermal analysis model for the entire structure of double-layer steel truss continuous girders was established to attain the temperature distribution law. The research results show that significant differences occur in the position and temperature difference of temperature gradients exhibited in the vertical, horizontal, and longitudinal directions in the double-layer steel truss bridge structure. The temperature distribution pattern within the chord section is mainly influenced by the environmental temperature and solar radiation intensity, along with the heat exchange between different panels. Thereafter, a validated temperature gradient formula for the component section has been proposed. The time-dependent laws in structural displacement, stress, and rotation angle under daily temperature cycling conditions have been revealed, thereby providing a theoretical basis for the life cycle construction and safety maintenance of double-layer steel truss structure bridges.

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Experiment study on temperature field and effect on steel-concrete composite bridge towers

Cited by 12 publications

References 7 publications

Investigation of Temperature Effects on Wide Steel Box Girder of Suspension Bridge Based on Long-Term Monitoring Data

Investigation of Temperature Effects on Wide Steel Box Girder of Suspension Bridge Based on Long-Term Monitoring Data

Design and Optimization of the Bi-Directional U-Ribbed Stiffening Plate–Concrete Composite Bridge Deck Structure

Temperature Response of Double-Layer Steel Truss Bridge Girders

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