Scholarlink

Objective <p>This study aims to identify variables that influence the vibration-dampening characteristics of an elastic anti-vibration slab mat layer in railway slab tracks. Specifically, it investigates how the motion of vehicle over slab track, combined with stationary load, transforms into a dynamic load due to instability between the rail and wheel surfaces. The research question focuses on understanding how an additional anti-vibration slab mat layer installed beneath the concrete layer affects the overall vibration response of slab track system.</p> Method <p>There are two sections to the study. The first section provides an overview of current high-demand prefabricated concrete slab track systems for high-speed rail. The second section involves a detailed vibration response analysis, employing a parametric investigation using the finite element method (FEM) to evaluate the influence of elastic material slab mat layer on vibration response of precast slab track system.</p> Results <p>The findings from the vibration response analysis indicate that certain mechanical specifications of the anti-vibration mat significantly contribute to reducing the vibration response in slab track. These specifications include increased thickness, lower stiffness, train velocity, track stiffness, damping properties, and load variations have been analysed to evaluate their influence on system performance.</p> Conclusion <p>This study offers valuable insights into design and application of slab mat layers, providing recommendations for their implementation in high-speed rail systems. The results demonstrate that optimizing thickness, stiffness, and damping ratio of anti-vibration mat can effectively mitigate vibrations, thereby enhancing overall functionality and efficiency of high-speed rail systems. Higher train speeds and axle loads significantly increase rail and slab accelerations, with slab responses being more sensitive to lighter loads. Assessing track performance is essential to ensure safety under high-speed and heavy-load conditions. Increasing slab mat thickness effectively reduces displacements, especially for slab displacements at higher foundation modulus values.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Computational Study of Vibration Mitigation by Slab Mat Layer in a Precast High-Speed Slab Track System

  • 期刊论文

  • 发表日期：

    2025年1月19日

查看全文
  • Kiran Chholak,
  • Nirendra Dev

摘要

Objective

This study aims to identify variables that influence the vibration-dampening characteristics of an elastic anti-vibration slab mat layer in railway slab tracks. Specifically, it investigates how the motion of vehicle over slab track, combined with stationary load, transforms into a dynamic load due to instability between the rail and wheel surfaces. The research question focuses on understanding how an additional anti-vibration slab mat layer installed beneath the concrete layer affects the overall vibration response of slab track system.

Method

There are two sections to the study. The first section provides an overview of current high-demand prefabricated concrete slab track systems for high-speed rail. The second section involves a detailed vibration response analysis, employing a parametric investigation using the finite element method (FEM) to evaluate the influence of elastic material slab mat layer on vibration response of precast slab track system.

Results

The findings from the vibration response analysis indicate that certain mechanical specifications of the anti-vibration mat significantly contribute to reducing the vibration response in slab track. These specifications include increased thickness, lower stiffness, train velocity, track stiffness, damping properties, and load variations have been analysed to evaluate their influence on system performance.

Conclusion

This study offers valuable insights into design and application of slab mat layers, providing recommendations for their implementation in high-speed rail systems. The results demonstrate that optimizing thickness, stiffness, and damping ratio of anti-vibration mat can effectively mitigate vibrations, thereby enhancing overall functionality and efficiency of high-speed rail systems. Higher train speeds and axle loads significantly increase rail and slab accelerations, with slab responses being more sensitive to lighter loads. Assessing track performance is essential to ensure safety under high-speed and heavy-load conditions. Increasing slab mat thickness effectively reduces displacements, especially for slab displacements at higher foundation modulus values.