Long-Term Impacts of Temperature Gradients on a Concrete-Encased Steel I-Girder Experiment-Field-Monitored Data

Article Construction & Building Technology

Experimental investigation of temperature gradients in a three-cell concrete box-girder

Zhang Feng et al.

Summary: This study investigates the temperature distribution of a three-cell concrete box girder using a model and numerous sensors. Temperature prediction equations specifically for this structure were developed using real-time environmental data, and it was discovered that the temperature difference on the sunny side web is more pronounced in winter.

CONSTRUCTION AND BUILDING MATERIALS (2022)

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Article Construction & Building Technology

Prediction of vertical temperature gradient on concrete box-girder considering different locations in China

Xingwang Sheng et al.

Summary: This study focuses on accurately predicting the temperature gradients in concrete box-girders in different regions of China by conducting long-term simulations and comparing results to experimental data and existing empirical equations. The proposed prediction equation, incorporating correction coefficients for elevation and latitude, shows good agreement with simulated results, with average and maximum absolute errors less than 1.0°C and 1.5°C respectively. This improved prediction equation provides more accurate results than current empirical equations and is applicable to various regions in China.

CASE STUDIES IN CONSTRUCTION MATERIALS (2022)

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Article Chemistry, Multidisciplinary

Analysis of Measured Temperature Field of Unpaved Steel Box Girder

Fengqi Guo et al.

Summary: This study investigated the temperature changes in steel rail beams and the distribution characteristics of the sunshine temperature field in a straddle-type monorail tourist transportation system using measured data and numerical simulations. The results showed that both ambient temperature and solar radiation had an impact on the distribution of temperature differences, and the temperature difference curves in the steel box girder exhibited multi-segment polylines and linear straight lines.

APPLIED SCIENCES-BASEL (2022)

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Article Chemistry, Multidisciplinary

Geometrical Parametric Study on Steel Beams Exposed to Solar Radiation

Sallal R. Abid et al.

Summary: This study conducted a finite element thermal analysis to evaluate the influence of geometrical parameters of steel sections on their thermal response under solar radiation. The results showed that the temperatures, temperature variations, and thermal stresses of the steel beams are affected by the geometry of the section, with flange width and flange thickness playing a significant role during noon hours.

APPLIED SCIENCES-BASEL (2021)

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Article Engineering, Civil

Finite element thermo-mechanical analysis of concrete box-girders

Sallal R. Abid et al.

Summary: In this study, a full-scale 3D thermo-mechanical Finite Element model was used to investigate the impact of open-field thermal loads on box-girder bridges. The analysis showed similarities between stress distributions and temperature distributions, and the results indicated maximum compressive stress in both summer and winter conditions.

STRUCTURES (2021)

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Article Engineering, Civil