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High-speed Railway Train-Track-Bridge Systems: A Seismic Safety Technology Framework systematically constructs a seismic safety technology framework for high-speed railways, focusing on three key dimensions: catastrophe simulation innovation, in-depth mechanism revelation, and implementation of prevention technologies. In catastrophe simulations, it integrates platforms such as OpenSees and SIMPACK to develop a collaborative simulation system. The book transcends the traditional limitation of modelling tracks as inertial masses by establishing, for the first time, a seismic failure model of railway tracks. For core prevention technologies, it proposes a disruptive SI (Spectral Intensity) velocity spectrum index that dynamically maps train derailment states to the responses of bridges. These results have already been applied to hundreds of bridges along the Guiyang-Guangzhou and Shanghai-Kunming high-speed railways, surviving nine strong earthquakes of magnitude 5.5 or greater. This book serves as an integrated knowledge source for both academic researchers and professional engineers: scholars will gain proficiency in the complete "experiment-simulation-mechanism" research workflow; engineers can directly leverage SI velocity spectrum design metrics embedded in industry standards, improving efficiency in seismic-region bridge design; industry leaders can adapt maglev train-bridge coupled vibration test technologies to support national maglev R&D initiatives
Contents
Chapter 1 Introduction
1.1 Introduction
1.2 Impact of earthquakes on high-speed railway operation safety
1.3 High-speed railway trains, tracks, and bridges
1.4 Computational models and dynamic coupling of train-track-bridge systems
1.5 Dynamic performance of high-speed train operations on bridges
1.6 Summary of this chapter
Chapter 2 Numerical simulation methods for train operation on high-speed railway bridges under earthquakes
2.1 Introduction
2.2 Current research on numerical simulation of train operation on high-speed railway bridges under earthquakes
2.3 Wheel-rail contact point search method
2.4 Co-simulation technology for train-track-bridge system simulation under earthquakes
2.5 Train-track-bridge system simulation under earthquakes based on the OpenSees platform
2.6 Train-track-bridge system simulation under earthquakes based on the SIMPACK platform
2.7 Train-track-bridge system simulation under earthquakes based on moving element model
2.8 Summary of this chapter
Chapter 3 Physical experiment simulation methods for high-speed railway train-track-bridge systems under earthquake conditions
3.1 Overview
3.2 Similitude design of high-speed railway train-track-bridge system for scale model testing
3.3 Architecture of experimental system for high-speed train operation on bridges
3.4 Testing of experimental system for high-speed train operation on bridges
3.5 Summary of this chapter
Chapter 4 Real-time hybrid simulation experiments of high-speed train operation on bridges
4.1 Introduction
4.2 Hybrid simulation for high-speed train operation on bridges
4.3 Real-time hybrid simulation algorithms
4.4 Real-time numerical model calculation methods
4.5 Time delay compensation techniques
4.6 Evaluation platform for numerical algorithms in hybrid simulation
4.7 Summary of this chapter
Chapter 5 Seismic catastrophe mechanisms of high-speed railway train-track-bridge systems
5.1 Introduction
5.2 Numerical model of train-track-bridge systems
5.3 Mechanical properties of key components in the track-bridge system
5.4 Flexural-shear strength degradation model for high-speed railway bridge piers under seismic damage
5.5 Seismic failure analysis of high-speed railway bridge piers
5.6 Catastrophic failure mechanism of track-bridge system under far-field earthquakes
5.7 Catastrophic failure mechanism of track-bridge system under near-fault earthquakes
5.8 Catastrophic failure mechanism of train-track-bridge systems under earthquakes
5.9 Summary of this chapter
Chapter 6 Evaluation indicators for train operation performance on high-speed railway bridges under earthquakes
6.1 Introduction
6.2 Safety evaluation indicators for operation on long-span railway bridges under earthquakes
6.3 Safety evaluation of train operation on high-speed railway bridges under earthquakes
6.4 Safety evaluation of train operation on bridges under earthquakes based on spectral intensity index
6.5 Summary of this chapter
Chapter 7 Seismic prevention and control technologies for high-speed railway train-track-bridge systems
7.1 Introduction
7.2 RFD-based seismic prevention technologies for track-bridge systems
7.3 Seismic prevention technologies for track-bridge systems based on combined energy-dissipating restraint bearings
7.4 TMD-based seismic prevention technologies for train-track-bridge systems
7.5 Performance-based design method for high-speed railway bridges based on energy balance
7.6 Summary of this chapter
Chapter 8 Research conclusions and outlook
8.1 Research conclusions
8.2 Research outlook References
