Pedestrian load models of footbridges
The increase of vibration problems in modern footbridges shows that footbridges should no longer be designed for static loads only. Not only natural frequencies but also damping properties and pedestrian loading determine the dynamic response of footbridges and design tools should consider all of th...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
EDP Sciences
2017-01-01
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| Series: | MATEC Web of Conferences |
| Online Access: | https://doi.org/10.1051/matecconf/201710700009 |
| _version_ | 1831671525259870208 |
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| author | Máca Jiří Štěpánek Jan |
| author_facet | Máca Jiří Štěpánek Jan |
| author_sort | Máca Jiří |
| collection | DOAJ |
| description | The increase of vibration problems in modern footbridges shows that footbridges should no longer be designed for static loads only. Not only natural frequencies but also damping properties and pedestrian loading determine the dynamic response of footbridges and design tools should consider all of these factors. In this paper the pedestrian load models for serviceability verification of footbridges, which are missing in the current European codes, are presented. For simplicity reasons the proposed pedestrian load models are based on stationary pulsating loads instead of moving pulsating loads. It is shown that simplified procedure can be used in verification of the serviceability limit state related to vibration due to pedestrians. Footbridge vibrations don’t cause usually structural problems, but if the vibration behaviour does not satisfy the comfort criteria, changes in the design or damping devices could be considered. The most popular external damping devices are viscous dampers and tuned mass dampers (TMD). The efficiency of TMD is demonstrated on the example of a footbridge prone to vibrations induced by pedestrians. It is shown that if the TMD is tuned quite precisely the reduction of accelerations can be very significant. |
| first_indexed | 2024-12-19T23:37:17Z |
| format | Article |
| id | doaj.art-da2e52698dc847e58da15fe154440b5a |
| institution | Directory Open Access Journal |
| issn | 2261-236X |
| language | English |
| last_indexed | 2024-12-19T23:37:17Z |
| publishDate | 2017-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | MATEC Web of Conferences |
| spelling | doaj.art-da2e52698dc847e58da15fe154440b5a2022-12-21T20:01:34ZengEDP SciencesMATEC Web of Conferences2261-236X2017-01-011070000910.1051/matecconf/201710700009matecconf_dyn2017_00009Pedestrian load models of footbridgesMáca Jiří0Štěpánek Jan1Czech Technical University in Prague, Faculty of Civil Engineering, Department of MechanicsCzech Technical University in Prague, Faculty of Civil Engineering, Department of MechanicsThe increase of vibration problems in modern footbridges shows that footbridges should no longer be designed for static loads only. Not only natural frequencies but also damping properties and pedestrian loading determine the dynamic response of footbridges and design tools should consider all of these factors. In this paper the pedestrian load models for serviceability verification of footbridges, which are missing in the current European codes, are presented. For simplicity reasons the proposed pedestrian load models are based on stationary pulsating loads instead of moving pulsating loads. It is shown that simplified procedure can be used in verification of the serviceability limit state related to vibration due to pedestrians. Footbridge vibrations don’t cause usually structural problems, but if the vibration behaviour does not satisfy the comfort criteria, changes in the design or damping devices could be considered. The most popular external damping devices are viscous dampers and tuned mass dampers (TMD). The efficiency of TMD is demonstrated on the example of a footbridge prone to vibrations induced by pedestrians. It is shown that if the TMD is tuned quite precisely the reduction of accelerations can be very significant.https://doi.org/10.1051/matecconf/201710700009 |
| spellingShingle | Máca Jiří Štěpánek Jan Pedestrian load models of footbridges MATEC Web of Conferences |
| title | Pedestrian load models of footbridges |
| title_full | Pedestrian load models of footbridges |
| title_fullStr | Pedestrian load models of footbridges |
| title_full_unstemmed | Pedestrian load models of footbridges |
| title_short | Pedestrian load models of footbridges |
| title_sort | pedestrian load models of footbridges |
| url | https://doi.org/10.1051/matecconf/201710700009 |
| work_keys_str_mv | AT macajiri pedestrianloadmodelsoffootbridges AT stepanekjan pedestrianloadmodelsoffootbridges |