Numerical and technical analysis of rail adequacy and the effectiveness of elastic layers in the concrete infrastructure of urban trains (Case Study: Shiraz Urban Railway Line)

Document Type : Original Article

Authors
MohammadReza Khakbaz 1
Morteza Noruzi 2
Neda Kamboozia 3
Mahan Yoldashkhan 4
1 M.Sc., Student, School of Civil Engineering, Iran University of Science and Technology (IUST), Tehran, Iran. Iran.
2 Department of Civil Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran.
3 Assistant Professor, School of Civil Engineering, Iran University of Science and Technology (IUST), Tehran, Iran.
4 M.Sc., Grad., Department of Road and Transportation, K.N. Toosi University of Technology, Tehran, Iran.
10.22034/road.2023.411111.2189
Abstract
The discussion on the analysis and design of concrete slab structures for railways, subways and urban trains and the effect of various elements on the elasticity and vibration of these tracks is very important and has been considered a general topic in the railway industry and structural design. In this regard, many researchers have presented many approaches and solutions in recent years to achieve a reliable and simple analysis and design method in this field. The use of mass and spring systems in railways, subways and urban trains is widely used. In addition, one of the most important issues in the analysis and design of railway lines is the choice of the railway profile and the investigation of the suitability of its construction under the applied loads. In addition, it is very important to establish a composition between the performance and vibration criteria of the railway concrete pavement to achieve a durable and stable track under the influence of dynamic work forces. This article presents general methods for the analysis and inspection of rail profiles on concrete slab lines, as well as the results of the rail analysis of the Shiraz City Railway and the effect of the use of elastic layers on it. In addition, based on the results of the vibration analysis carried out in this work, it is proposed to consider a vibration reduction of more than 20dB at an operating frequency of more than 50Hz in the mass and spring systems of urban railways train.
Keywords
City Train
Rail
Zimmerman Analysis
Mass and Spring Systems
Vibration
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