High Speed Railway Track Dynamics

Frontmatter

Chapter 1. Track Dynamics Research Contents and Related Standards

Abstract

With increasing train speed, axle loads, traffic density, and the wider engineering applications of new vehicles and track structures, the interaction between vehicle and track has become more complex. Accordingly, the train running safety and stability are more affected by increased dynamic stresses.

Xiaoyan Lei

Chapter 2. Analytic Method for Dynamic Analysis of the Track Structure

Abstract

With the ongoing operation of high-speed and heavy-haul railways, dynamic analysis of the track structure has become a significant research topic in the field of railway engineering. By establishing the continuous elastic beam model of track structure, analytic method for dynamic analysis of track structure is discussed, and characteristics of ground surface waves and the strong track vibration induced by high-speed trains are analyzed by the analytic method.

Xiaoyan Lei

Chapter 3. Fourier Transform Method for Dynamic Analysis of the Track StructureTrack Track Structure Style

Abstract

High-speed railways have many advantages in medium- or long-distance transport, such as being fast, comfortable, energy-saving, and environment-friendly. Along with the increase of train speed, dynamic action of trains on tracks and ground is enlarged apparently, which would be more severe when train runs at high speed.

Xiaoyan Lei

Chapter 4. Analysis of Vibration Behavior of the Elevated Track Structure

Abstract

The elevated track structure, which has many advantages, such as less land occupation, less settlement, low construction and operation costs, and effective relief of the urban traffic congestion, is widely used in high-speed railway and urban mass transit.

Xiaoyan Lei

Chapter 5. Track Irregularity Power Spectrum and Numerical Simulation

Abstract

The railway track is an engineering structure whose operation and maintenance are undertaken at the same time. Due to long-time running, the accumulated deformation of track structure is increasing, which would cause various kinds of track irregularities: track profile irregularity, track cross-level irregularity, track alignment irregularity and track gauge irregularity.

Xiaoyan Lei

Chapter 6. Model for Vertical Dynamic Analysis of the Vehicle-Track Coupling System

Abstract

With the sustained and rapid social and economic development in China, there is an increasing demand for railway passenger and freight transport, making it vital and urgent for freight trains to increase their capacity and passenger trains to improve their speed and riding quality on the premise of assuring traffic safety.

Xiaoyan Lei

Chapter 7. A Cross-Iteration Algorithm for Vehicle-Track Coupling Vibration Analysis

Abstract

In Chap. 6, the track dynamics model under the moving axle loads, the vehicle model of single wheel with primary suspension system, and the vehicle model of half a car and a whole car with primary and secondary suspension system are presented, and the associated dynamic finite element equations are derived.

Xiaoyan Lei

Chapter 8. Moving Element Model and Its Algorithm

Abstract

Chapter 7 has investigated the cross iterative method that solves the dynamic response of the train-track coupling system.

Xiaoyan Lei

Chapter 9. Model and Algorithm for Track Element and Vehicle Element

Abstract

With the rapid development of high-speed railway, the train at a high speed results in greater dynamic stress on track structure and larger car body vibration, which directly affects train operation safety and comfort.

Xiaoyan Lei

Chapter 10. Dynamic Analysis of the Vehicle-Track Coupling System with Finite Elements in a Moving Frame of Reference

Abstract

With the rapid development of high-speed railways and passenger-dedicated lines, train speed is remarkably improved, and slab track has been the main form for high-speed railways.

Xiaoyan Lei

Chapter 11. Model for Vertical Dynamic Analysis of the Vehicle-Track-Subgrade-Ground Coupling System

Abstract

Chapters 6–10 has elaborated several models and their algorithms for vertical dynamic analysis of the vehicle-track coupling system. In the analysis, effects of subgrade and ground have not been considered and the subgrade is simplified into viscoelastic damping elements. In fact, an accurate analysis of the vehicle dynamic action on the track structure has to consider the interactions among vehicle, track, subgrade, and ground.

Lei Xiaoyan

Chapter 12. Analysis of Dynamic Behavior of the Train, Ballast Track, and Subgrade Coupling System

Abstract

With the large-scale construction of high speed railways and the completion of speed-rising projects, rail transportation in China has entered a high speed era.

Xiaoyan Lei

Chapter 13. Analysis of Dynamic Behavior of the Train, Slab Track, and Subgrade Coupling System

Abstract

With several competitive advantages over conventional ballast tracks, slab tracks are widely applied in countries where high-speed railways are well developed.

Xiaoyan Lei

Chapter 14. Analysis of Dynamic Behavior of the Transition Section Between Ballast Track and Ballastless Track

Abstract

There are a large number of bridges, grade crossings and rigid culverts involved in railway transportation, which result in plenty of track transitions.

Xiaoyan Lei

Chapter 15. Environmental Vibration Analysis Induced by Overlapping Subways

Abstract

China is in the golden period of constructing urban mass transit. In urban subway network planning and layout, the overlapping of two or even more subway lines are inevitable. Environmental vibration induced by the overlapping of two or more subway lines doesn’t equal the sum of each one and differs greatly from that induced by a single line. Since the transport organization and the train’s operation in overlapping subways differ greatly and are quite complicated, their influence on the environmental vibration can be amplified or exceeds the environmental vibration standard.

Xiaoyan Lei

Backmatter