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High-speed turnouts, a key technology for high-speed railways, have a great influence on the safe and stable running of high-speed trains. Design of High-Speed Railway Turnouts: Theory and Applications, comprehensively introduces the technical characteristics and requirements of high-speed turnouts, including design theories and methods of turnout layout geometry, wheel and rail relations, track stiffness, welded turnout, turnout conversion, turnout components, and manufacture and laying technologies of turnouts.
High-speed turnouts, a key technology for high-speed railways, have a great influence on the safe and stable running of high-speed trains. Design of High-Speed Railway Turnouts: Theory and Applications, comprehensively introduces the technical characteristics and requirements of high-speed turnouts, including design theories and methods of turnout layout geometry, wheel and rail relations, track stiffness, welded turnout, turnout conversion, turnout components, and manufacture and laying technologies of turnouts.
Analyzing the operational problems of China’s high-speed turnout in particular, this book discusses the control of structure irregularity, state irregularity, geometrical irregularity and dynamic irregularity during the design, manufacture, laying, and maintenance of turnouts. At the end of this reference book, the author provides high-speed turnouts management methods, maintenance standards, testing and monitoring technology, and maintenance technology.
Design of High-Speed Railway Turnouts: Theory and Applications will enable railway technicians all over the world to develop an in-depth knowledge of the design, manufacture, laying, and maintenance technology of high-speed turnouts
Table Contents
Chapter 1 TYPES AND STRUCTURE
1.1.Main Types
1.1.1 Composition
1.1.2.Classification
1.2.Technical Requirements
1.2.1.Excellent Technical Performance
1.2.2.High Cost-Effectiveness
1.2.3.Outstanding Adaptability
1.3 Technical Feautures
1.3.1.System Integration
1.3.2.Theoretical Basis and Practical Tests
1.3.3.State-of-the Art Manufacture and layind Processes
1.3.4.Scientific Maintenance and Management
1.4 Global Overview of High Speed Railway
1.4.1.France
1.4.2.Germany
1.4.3.China
1.4.4.Other Countries
CHAPTER 2 LAYOUT DESIGN
2.1.Design Conditions
2.1.1 Operations
2.1.2.Rolling Stock
2.1.3.Tracks
2.1.4.Layign
2.2.Plane Line Types
2.2.1 Design Requirements
2.2.2.Transition Lead Curves
2.2.3.Swith Rails
2.2.4.Clearances
2.2.5 Geometric Sizes
2.3 Design Parameters
2.3.1. Method Based on Particle Motion
2.3.2. Method Based on rigid Body Motion
2.3.3. Design Software
2.4 Assessment Methods Based on Wheel-Rail System Vibration
2.4.1. Theory of Wheel-Rail System Dynamics
2.4.2. Multi-Rigid-Body Dynamics Analysis Software
2.4.3. Application Cases
CHAPTER 3 STRUCTURAL SELECTION AND RAIL DESIGN
3.1. Selection Principles
3.2. Overall Structure Selection
3.2.1 Overall Structure Selection
3.2.2.Swing Nose Crossing
3.2.3.Flexible Point Rails
3.2.4.Long Wiang Rails
3.2.5.Assembled Point Rails
3.2.6.Rolled Special Secion
3.2.7.At Rail Hot-Forged Heel Ends of Switcg Rails and Point Rails
3.2.8 Check Rail Made of Grooved Rail
3.3.Design of Rail Members
3.3.1.Selection of AT Rail
3.3.2.Design of components at the First Traction Point os Swing Nose Rail
3.4 Technical Requirements for rails
3.4.1.Requirements
3.4.2.Type.Section,and Length of Rails
3.5 Manufacturing on rails
3.5.1. Refining
3.5.2. Finishing
3.5.3. Conditioning
3.5.4. Centralized Detection
3.5.5. Long Rail Production
CHAPTER 4 WHEEL-RAIL RELATION DESIGN
4.1 Wheel-Rail Contact Geometry relation
4.1.1. Calculation Methods
4.1.2. Rail Profiles
4.1.3. Wheel-Rail Contact Geometry ( without Wheelset Lateral Displacement )
4.1.4. Wheel-Rail Contact Geometry in the diverging line
4.1.5. Wheel-Rail Contact Geometry ( with Wheeelset lateral displacement
4.1.6. Longitudinal Change along the turnout ( with Wheelset Lateral Displacement )
4.2 Wheel-Rail Rolling contact theories in turnout zone
4.2.1 Hertzian Theory
4.2.2.Non-Hertzian Rolling Contact Theories
4.2.3.Wheel-Rail Rolling contact in Turnout Area
4.2.4.Calculation Method for 3D Elastic Body Semi-Hertzian Rolling
4.3.Assessment of Simplifield Models
4.3.1. Vertical Irregularities
4.3.2. Lateral Irregularities
4.3.3. Application Cases
4.4. Dynamic Evaluation Based on Wheel-Rail Dynamics in turnout Area
4.4.1. Dynamic models of Train Turnout System
4.4.2. Vibration Equation of Train-Turnout System
4.4.3. Evaluation Indicators
4.4.4. Simulation Evaluation
4.4.5. Evalution of Wheel-Rail Relation Design
CHAPTER 5 TRACK STIFFNESS DESIGN
5.1. Composition
5.1.1. Fastening Stiffness
5.1.2. Sub-Rail Foundation Stiffness
5.1.3. Track Integral Stiffness
5.2. Track stiffness Design
5.2.1. Structure of a Fastening for High-Speed Turnouts in China
5.2.2. vertical Stiffness of Rail Pad
5.3 Distribution Rules of Track Integral Stiffness
5.3.1. Influential Factors
5.3.2. Calculation Models
5.3.3. Distribution Rule in Ballasted Turnout
5.3.4. Distribution Rule in Ballasted Turnout
5.4. Homogenization Design for Track Stiffness in a Turnout
5.4.1. Dynamic Analysis at Track Stiffness Transition
5.4.2. Relation between variation Rate of rail deflection and Length of track sfiffness Transition
5.4.3. Homogenization Design of track Sfiffness in a Turnout
5.4.4. Design of plate pad
5.5 Design of track stiffness Transition for a Turnout
CHAPTER 6 STRUCTURAL DESIGN OF CWR TURNOUTS
6.1. Structural Features
6.1.1. Basic Requirements
6.1.2. Transmission Path of temperature Force
6.1.3. Force Transmission for a turnout
6.2. Calculation Theories and Approaches
6.2.1. Equivalent Resistance Coefficient Method
6.2.2. Double Rail Interaction Method
6.2.3. Generalized Variational Method
6.2.4. Finite Element Method
6.3. Regularity of stress and deformation of CWR Turnout
6.3.1. Distribution regulary
6.3.2. Influential Factors
6.4. Design and Verification
6.4.1. Contents
6.4.2. Design of rail laying Temperature of CWR Turnout
6.4.3. Arrangement of Creep Observation stakes
6.4.4. Welding Sequence for Lange Number Turnout
6.4.5. Layout Principle for Turnout in Tunnel
6.4.6. Layout Principle for CWR Turnout in Tunnel
6.4.7. Layout Principle for CWR Turnout in Bridge
CHAPTER 7 DESIGN OF CWR TURNOUT ON BRIDGE
7.1 Regularity of Longitudinal Interaction of CWR Turnout on Bridge
7.1.1 Turnout-Bridge-Slab-Pier Integrated Model
7.1.2. Regularity of Longitudinal Interaction between simply
Suported Beam Bridge with Ballast Track and turnout
7.1.3. Regularity of Longitudinal Interaction between turnout and continuous beam bridge for ballast track
7.1.4. Regularity of Longitudinal Interaction between continuous beam bridge with Ballastless track and turnout
7.2 Dynamic Characteristics of Vehicle-Turnout-Bridge Coupled System
7.2.1. Regulaty of dynamic interaction of crossover turnout on uniform continuous beam bridge
7.2.2. Regulaty of dynamic interaction of single turnout on uniform continuous beam
7.3.Design requirements of CWR turnout on bridge
7.3.1. Layout of turnout and Bridge
7.3.2. Design requirements for CWR turnout on Bridge
CHAPTER 8 CONVERSION DESIGN OF HIGH-SPEED TURNOUTS
8.1. Conversion Structure and principle
8.1.1. Conversion Structure
8.1.2. Principle of Turnout conversion
8.2. Calculation Theory of turnout conversion
8.2.1. Calculation
8.2.2. One-Machine Multi-Point Traction Mode
8.2.3. Test of friction coeffient of slide Plate
8.3. Study and design of High-Speed Turnout Conversion
8.3.1. Switch Rail of High-Speed Turnout
8.3.2. Point Rail of High-Speed Turnout
CHAPTER 9 DESIGN OF RAIL SUBSTRUCTURE AND COMPONENTS
9.1.Rail Substructure
9.1.1. Tie of Ballast Turnout
9.1.2. Embedded Long Tie for Ballastless Track
9.1.3. Slabs for Ballstless Turnout
9.2.Plates of Turnout
9.2.1. Forces on Plates
9.2.2. Check rail plate
9.2.3. Common Plates
9.2.4. Elastic Fastening and Antifriction Elastic of Slide Plate at Switch
9.3. Components of Turnout Fastenings
CHAPTER 10 THEORETICAL VALIDATION OF HIGH-SPEED TURNOUT DESIGN
10.1. Validation of Turnout dynemic simulation theory
10.1.1. Comparison of dynamic responses
10.1.2. Comparison of wheel-load transition
10.1.3. Comparison of wheelset lateral displacement
10.1.4. Test on lateral force of check rail
10.2. Validation of analysis theory of longitudinal interaction of CWR Turnout on Bridge
10.2.1. Model of CWR Turnout on Bridge
10.2.2. Field Test on CWR Turnout on Bridge
10.3. Validation of Analysis Theory of Vehicle-Turnout-Bridge Dynamica Interaction
10.4. Validation of High-Speed Turnout Conversion
10.4.1. Field Test in Qingdao-Ji´nam Line
10.4.2. Laboratory Test of Conversion of Switch Rail of nº 42
CHAPTER 11 MANUFACTURING TECHNOLOGIES OF HIGH-SPEED TURNOUTS
11.1. Manufacturing Equipment and processes
11.1.1 Providers of High-Speed Turnouts in China
11.1.2. Major Process Equipment
11.1.3. Manufacturing Processes
11.2. Key Processes for rails
11.2.1. Process flow and Main Control Points
11.2.2. Forging of Heel of 60D40 Rail and Quality Control
11.2.3. Heat Treatment and Quality Control
11.2.4. Control of line type in milling the switch Rail
11.3. Key Processes for High-Speed Turnout Plates
11.4. Assembly and Acceptance
11.4.1. Assembly process of critical Turnout Parts
11.4.2. Integral Assembly
11.4.3. Acceptance after Assembly
11.4.4. System Integration
CHAPTER 12 LAYING TECHNOLOGY
12.1. Transport
12.1.1. Modes of Delivery
12.1.2. Hoisting and Storage
12.2. Laying of Ballast turnout
12.2.1 In-situ Assembly and laying
12.2.2 Ex-situ Assembly and laying
12.2.3.Control measures for laying quality
12.3. Laying of Ballastless Turnout
12.3.1 In-situ Laying of Ballastless Turnout with embedded ties.construction process and key technologies
12.3.2 Ex-situ Laying of Ballastless Turnout with embeddkes ties
12.3.3.Laying of Ballastless Slab turnout construction process and key technologies
12.3.4.Control Measures for laying quality of Balastless turnout
12.4. Accurate Adjustment Technology
12.4.1 Detection Technologies of turnout static geometry
12.4.2.Assessment Standard for turnout Static geometry
12.4.3.Basis requirements
12.4.4.Analysis Software
12.5.Dynamic Detection and Acceptance of High-Speed Turnout
CHAPTER 13 IRREGULARITY CONTROL OF HIGH-SPEED TURNOUTS IN OPERATION
13.1. Structural Irregularity Induced by poor Wheel-Rail Relation
13.2. Geometric Irregularity
13.3. Status Irregularity
13.3.1 Field Survey
13.3.2.Dynamic Simulation Analysis
CHAPTER 14 MAINTENANCE AND MANAGEMENT
14.1. Management Policies and Maintenance Standards
14.1.1. Type of Maintenance Work
14.1.2. Management Organization
14.1.3. Mode of maintenance Work
14.1.4. Maintenance Standard
14.1.5. Evaluation of Turnout Quality
14.2. Inspection and Monitoring Technologies for High-Speed Turnouts
14.2.1. Inspection of turnout Status and Geometry
14.2.2. Inspection of turnout Rails
14.2.3. Turnout Monitoring System
14.3. Maintenance Technologies
14.3.1 Rail Grinding
14.3.2. Inspection of ballasted turnout
14.3.3. Improvement of the Settlement of Ballastless track foundation in the turnout Area
14.4. Management of High-Speed Turnouts
14.4.1. Permanent Way Management information System
14.4.2. Digital Management of engineering Equipment
14.4.3. RAMS Management of High-Speed Turnouts
References
Index
