Key Factors of Subgrade Influencing Dynamic Wheel/Rail Loads at Railway Transition Zones
| Autor: | Hans Brinkman, Hanbing Hu |
|---|---|
| Rok vydání: | 2013 |
| Předmět: |
geography
Engineering geography.geographical_feature_category business.industry Settlement (structural) Stiffness Differential (mechanical device) Structural engineering Subgrade Track (rail transport) Key factors Dynamic simulation model medicine Geotechnical engineering medicine.symptom Levee business |
| Zdroj: | IACGE 2013. |
| Popis: | It is widely believed that differential settlement at railway transition zones is the result of dynamic wheel/rail force, and the stiffness difference between embankment and fixed structures is believed to be one of the major causes of high wheel/rail forces. A dynamic simulation model, which takes into account both a varying subgrade stiffness and track settlement, and incorporates the dynamic characteristics of railway vehicles, was applied to analyze the influences of subgrade stiffness on dynamic loads at railway transition zones. The studies reveal that stiffness variation at transitions is of minor influence over dynamic wheel/rail forces, and the overall dynamic effect is dominated by track settlement differences at transitions and the stiffness of fixed structures. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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