| Autor: |
Zhong Yang Ren, Bin Zhen, Rui Lin |
| Rok vydání: |
2013 |
| Předmět: |
|
| Zdroj: |
Applied Mechanics and Materials. :408-411 |
| ISSN: |
1662-7482 |
| DOI: |
10.4028/www.scientific.net/amm.427-429.408 |
| Popis: |
The problem of the critical number of pedestrians is significant in the study of lateral vibrations of footbridges since it can cause serviceability for the footbridges. By considering the pedestrians mass on the footbridge increases slowly, the modified Nakamuras model can be regarded as a fast-slow system which can be used to calculate the critical number of pedestrians. The influence of the time delay of interaction between pedestrians and the footbridge on the critical number of pedestrians is analyzed. Comparison with other results indicates the correctness of our formula predicting the critical number of pedestrians. Furthermore, our research suggests that the existence of the time delay can make the critical number of pedestrians less, which means that the time delay helps to improve the safety of the footbridge. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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