Estimating Critical Velocity for High-Speed Rail
Publication: Geo-Congress 2024
ABSTRACT
This paper summarizes 3D geo-dynamic modeling work performed by Jacobs as part of assessing track embankment stability and ground response under dynamic loading from the high-speed train proposed for use on the California High-Speed Rail (CHSR) Project. The advanced numerical modeling technique was benchmarked with the well-known critical velocity case study site at Ledsgård, Sweden, using linear, equivalent-linear, and full non-linear soil models. The advantages and limitations of the modeling techniques are highlighted, with other design approaches and methodologies also briefly discussed based upon the experience of the Jacobs design team on other high-speed rail projects. This work shows that understanding the practical geotechnical management of Rayleigh waves is still under development. It requires a change away from normal geotechnical methods of static loading toward the use of methods appropriate for repeated loading conditions and the management of dynamic response.
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Information & Authors
Information
Published In
Geo-Congress 2024
Pages: 275 - 285
History
Published online: Feb 22, 2024
ASCE Technical Topics:
- Business management
- Continuum mechanics
- Dynamic loads
- Dynamics (solid mechanics)
- Engineering fundamentals
- Engineering mechanics
- Geotechnical engineering
- High-speed rail
- Infrastructure
- Management methods
- Models (by type)
- Numerical models
- Practice and Profession
- Rail transportation
- Railroad tracks
- Railroad trains
- Solid mechanics
- Structural dynamics
- Transportation engineering
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