Dynamic response evaluation of railway track transitions with resilient materials

Name: Surapan Noppharat

Organization : Chulalongkorn University. Faculty of Engineering

Email : 6470299421@chula.ac.th

Name: Raj, Anand

Organization : Chulalongkorn University. Faculty of Engineering

Email : anandrajce@gmail.com

Name: Chayut Ngamkhanong

Organization : Chulalongkorn University. Faculty of Engineering

Email : Chayut.ng@chula.ac.th

keyword: Resilient materials

LCSH: Railroads -- Curves and turnouts

; Dynamic response analysis

LCSH: Railroads -- Design and construction

; Under Sleeper Pads

LCSH: Structural dynamics

; Under Slab Mats

Abstract: Railway infrastructure development is a growing trend around the globe, offering numerous benefits. However, one of the significant challenges is the track transition problem that arises from changing track sections. This leads to abrupt changes in track stiffness, resulting in substantial damage to the track structure due to the differential settlement, thereby increasing maintenance costs. In Thailand, the first phase of Thailand’s high speed rail project has introduced a slab track system from China combined with traditional ballasted tracks at several sections. It is important to note that transition area can be critical and. There have been several methods to reduce differential stiffness. However, the combined method of using both Under Sleeper Pads (USPs) and Under Slab Mats (USMs) has not been widely adopted, even though it has the potential to reduce track vibration, impact load, and differential settlement. This paper presents the 3D train-track-soil finite element model at railway track transition zone with USPs and USMs. Several types of pads are proposed at different locations on the tracks subjected to various train speeds. Numerical results from a train-track-soil model computed using LS-DYNA are validated with field measurements and previous numerical results. One of the main advantages of using USPs is that they help to reduce ballast degradation. Similarly, USMs can be used to control track stiffness. While there are various ways to address these problems, the mixed method of using USPs and USMs is found to be an alternative to mitigate the problem at railway track transition. It is important to use resilient pads with caution, as improper selection or application of these pads can lead to further problems. Therefore, additional research is required to assess the potential benefits of this approach in reducing track vibration, impact load, and differential settlement on other tracks and soil types.

King Mongkut's University of Technology North Bangkok. Central Library

Address: BANGKOK

Email: library@kmutnb.ac.th

Created: 2023

Modified: 2024-04-10

Issued: 2024-04-10

บทความ/Article

application/pdf

BibliograpyCitation : In Chulalongkorn University. 5th International Conference on Civil and Building Engineering Informatics (ICCBEI 2023) (pp.511-518). Bangkok : Chulalongkorn University

eng

©copyrights King Mongkut's University of Technology North Bangkok

ลำดับที่.	ชื่อแฟ้มข้อมูล	ขนาดแฟ้มข้อมูล	จำนวนเข้าถึง	วัน-เวลาเข้าถึงล่าสุด
1	ICCEBEI 2023pp.511-518.pdf	2.07 MB

ใช้เวลา

0.031225 วินาที