Details
| Original language | English |
|---|---|
| Title of host publication | 7th European Conference on Structural Dynamics, EURODYN 2008 |
| ISBN (electronic) | 9780854328826 |
| Publication status | Published - 2008 |
| Externally published | Yes |
| Event | 7th European Conference on Structural Dynamics, EURODYN 2008 - Southampton, United Kingdom (UK) Duration: 7 Jul 2008 → 9 Jul 2008 |
Publication series
| Name | 7th European Conference on Structural Dynamics, EURODYN 2008 |
|---|
Abstract
In this paper dynamic analysis of multi-span bridges subjected to a moving vehicle is investigated. Finite element method is used to model the problem, and the Newmark technique is used for direct integration of the governing equations. In this regard, the moving node technique is applied to represent the dynamic responses of the multi-span bridge, and the vehicle is idealized as a sprung-mass system. Results indicate that the maximum vertical deflection of the multi-span bridge occurs at the span under the vehicle. It was found that the mid-span vertical deflection of spans for dynamic and static loading are not the same, and the position of the vehicle for maximum deflection for dynamic and static loading are also different, and the distance between two maxima increases by the velocity of the vehicle. Considering the results obtained from axial dynamic responses of the mid-spans, it is interesting to note that by increasing the velocity and acceleration or deceleration of the moving vehicle the vibration amplitudes of the axial responses increase. It is also worthy of noting that by increasing the velocity or acceleration of the moving vehicle, the vibration frequency of the axial responses decreases during the constant-speed period.
Keywords
- Finite element, Moving mass, Multi-span beam
ASJC Scopus subject areas
- Engineering(all)
- Architecture
- Engineering(all)
- Building and Construction
- Engineering(all)
- Civil and Structural Engineering
- Engineering(all)
- Mechanics of Materials
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7th European Conference on Structural Dynamics, EURODYN 2008. 2008. (7th European Conference on Structural Dynamics, EURODYN 2008).
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review
}
TY - GEN
T1 - Dynamic analysis of a multi-Span bridge subjected to a moving vehicle using moving node technique
AU - Ghafoori, Elyas
AU - Souri, Jamshid
PY - 2008
Y1 - 2008
N2 - In this paper dynamic analysis of multi-span bridges subjected to a moving vehicle is investigated. Finite element method is used to model the problem, and the Newmark technique is used for direct integration of the governing equations. In this regard, the moving node technique is applied to represent the dynamic responses of the multi-span bridge, and the vehicle is idealized as a sprung-mass system. Results indicate that the maximum vertical deflection of the multi-span bridge occurs at the span under the vehicle. It was found that the mid-span vertical deflection of spans for dynamic and static loading are not the same, and the position of the vehicle for maximum deflection for dynamic and static loading are also different, and the distance between two maxima increases by the velocity of the vehicle. Considering the results obtained from axial dynamic responses of the mid-spans, it is interesting to note that by increasing the velocity and acceleration or deceleration of the moving vehicle the vibration amplitudes of the axial responses increase. It is also worthy of noting that by increasing the velocity or acceleration of the moving vehicle, the vibration frequency of the axial responses decreases during the constant-speed period.
AB - In this paper dynamic analysis of multi-span bridges subjected to a moving vehicle is investigated. Finite element method is used to model the problem, and the Newmark technique is used for direct integration of the governing equations. In this regard, the moving node technique is applied to represent the dynamic responses of the multi-span bridge, and the vehicle is idealized as a sprung-mass system. Results indicate that the maximum vertical deflection of the multi-span bridge occurs at the span under the vehicle. It was found that the mid-span vertical deflection of spans for dynamic and static loading are not the same, and the position of the vehicle for maximum deflection for dynamic and static loading are also different, and the distance between two maxima increases by the velocity of the vehicle. Considering the results obtained from axial dynamic responses of the mid-spans, it is interesting to note that by increasing the velocity and acceleration or deceleration of the moving vehicle the vibration amplitudes of the axial responses increase. It is also worthy of noting that by increasing the velocity or acceleration of the moving vehicle, the vibration frequency of the axial responses decreases during the constant-speed period.
KW - Finite element
KW - Moving mass
KW - Multi-span beam
UR - http://www.scopus.com/inward/record.url?scp=84959914052&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:84959914052
T3 - 7th European Conference on Structural Dynamics, EURODYN 2008
BT - 7th European Conference on Structural Dynamics, EURODYN 2008
T2 - 7th European Conference on Structural Dynamics, EURODYN 2008
Y2 - 7 July 2008 through 9 July 2008
ER -