Numerical simulation of frost jacking response of a single pile considering hydro-thermo-mechanical coupling

Wang, XingYu; Chang, Dan; Liu, Jiankun

doi:10.1016/j.rcar.2022.12.006

Cited by 2 publications

(1 citation statement)

References 2 publications

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“…The results show that the dynamic response has a linear decaying trend in the non-freezing period and a nonlinear decaying trend in the freezing period, and the vertical acceleration amplitude is the main vibration component, which means that the vertical acceleration is the main factor causing the permafrost embankment failure. The wheel-rail dynamic response will increase significantly in the frost-heaving zone of the embankment, which will cause fatigue damage to the track structure, and then significantly affect the service performance of the track structure [21][22][23].…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation Study on the Hydrothermal Characteristics and Dynamic Response of the Embankment–Bridge Transition Zone in Cold Regions

Han,

Tian,

Dong

et al. 2024

Sustainability

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The chain reaction of bridge abutment structure caused by frost heave of the embankment–bridge transition zone filler in cold regions has a great impact on the smoothness of railway lines, which will bring great challenges to the normal operation, safety, and maintenance of rail transit in cold regions under the action of long-term dynamic load. In this paper, the hydrothermal model and dynamic analysis model of the embankment–bridge transition zone are established, and the frost heave deformation rule and dynamic response characteristics of the embankment–bridge transition zone under frost heave conditions are studied. The results show that the effect of the bridge abutment structure on vertical frost heave is mainly concentrated in the range of the bridge abutment, and the vertical frost heave near the abutment is much smaller than other parts away from the abutment. The dynamic response and wheel–rail contact force of the embankment–bridge transition zone are significantly different under non-frost heave and frost heave conditions. Frost heave may cause a higher risk of derailment. This study provides a scientific reference for the design, construction, and safe operation and maintenance of embankment–bridge transition zones in cold regions, and has certain practical engineering significance.

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Section: Introductionmentioning

confidence: 99%

Numerical Simulation Study on the Hydrothermal Characteristics and Dynamic Response of the Embankment–Bridge Transition Zone in Cold Regions

Han,

Tian,

Dong

et al. 2024

Sustainability

View full text Add to dashboard Cite

show abstract

Method for Detecting Roadbed Compaction Degree Based on Machine Learning and Vibration Acceleration

Wang,

Zhang,

WanYan

et al. 2024

IJMEE

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Roadbed construction occupies a core position in highway construction, but its quality is easily constrained by multiple factors such as changing environmental factors, the performance of construction equipment, and the professional abilities of construction personnel, leading to potential quality risks. Traditional quality inspection methods are mostly carried out after construction is completed, making it difficult to achieve continuous and real-time monitoring of roadbed compaction quality, which to some extent limits the real-time feedback and adjustment of construction quality. Vibration compaction technology has been widely used in the field of highway engineering due to its high efficiency and speed. The compaction degree is directly related to the durability and service life of the highway; therefore, accurate and efficient detection of compaction degree is crucial. This article proposes a method for detecting roadbed compaction degree by integrating machine learning (ML) and vibration acceleration signals. This method aims to achieve accurate evaluation of roadbed compaction by real-time monitoring and analysis of vibration acceleration data, combined with the powerful prediction and classification capabilities of ML algorithms. The experimental results show that this method not only improves the detection efficiency, but also significantly enhances the accuracy of compaction degree detection.

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Numerical simulation of frost jacking response of a single pile considering hydro-thermo-mechanical coupling

Cited by 2 publications

References 2 publications

Numerical Simulation Study on the Hydrothermal Characteristics and Dynamic Response of the Embankment–Bridge Transition Zone in Cold Regions

Numerical Simulation Study on the Hydrothermal Characteristics and Dynamic Response of the Embankment–Bridge Transition Zone in Cold Regions

Method for Detecting Roadbed Compaction Degree Based on Machine Learning and Vibration Acceleration

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