Details
| Translated title of the contribution | Additional rail stresses due to long-term deformations of railway viaducts with ballastless track - Model and reality |
|---|---|
| Original language | German |
| Pages (from-to) | 674-695 |
| Number of pages | 22 |
| Journal | Bautechnik |
| Volume | 96 |
| Issue number | 9 |
| Early online date | 21 May 2019 |
| Publication status | Published - 6 Sept 2019 |
Abstract
Additional rail stresses due to long-term deformations of railway viaducts with ballastless track – model and reality. The long-term deformation of the bridge superstructure due to temperature changes of the bridge itself and due to creep and shrinkage in the case of concrete bridges leads to a major part of the additional rail stresses, while welding the rail continuously over bridges with ballastless track. In this paper, the results of an extensive monitoring performed on several long railway viaducts with ballastless track are analysed, in order to verify the actual models used to calculate the additional rail stresses. In a first step the monitoring concept as well as the methodology of the analyse and the plausibility check of the data are presented. In the next step, the monitoring results are analysed to evaluate the temperature load case to apply in the calculation. The focus of the paper is on the analyse of the measured long-term data of rail stresses and rails displacements on a period of nearly two years. These results are compared to those of the model calculation. In the case of ballastless track, the longitudinal rail restraint is the major parameter governing the additional rail stresses. With the chosen measurement layout, it was also possible to analyse the longitudinal rail restraint occurring in situ under real conditions. All these results provide important knowledge on the calculation of additional rail stresses on bridges with ballastless track.
ASJC Scopus subject areas
- Engineering(all)
- Civil and Structural Engineering
- Engineering(all)
- Building and Construction
Cite this
- Standard
- Harvard
- Apa
- Vancouver
- BibTeX
- RIS
In: Bautechnik, Vol. 96, No. 9, 06.09.2019, p. 674-695.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Zusätzliche Schienenspannungen aus Langzeitverformungen von Eisenbahnbrücken mit Fester Fahrbahn – Modell und Realität
AU - Wenner, Marc
AU - Marx, Steffen
AU - Koca, Matthias
PY - 2019/9/6
Y1 - 2019/9/6
N2 - Additional rail stresses due to long-term deformations of railway viaducts with ballastless track – model and reality. The long-term deformation of the bridge superstructure due to temperature changes of the bridge itself and due to creep and shrinkage in the case of concrete bridges leads to a major part of the additional rail stresses, while welding the rail continuously over bridges with ballastless track. In this paper, the results of an extensive monitoring performed on several long railway viaducts with ballastless track are analysed, in order to verify the actual models used to calculate the additional rail stresses. In a first step the monitoring concept as well as the methodology of the analyse and the plausibility check of the data are presented. In the next step, the monitoring results are analysed to evaluate the temperature load case to apply in the calculation. The focus of the paper is on the analyse of the measured long-term data of rail stresses and rails displacements on a period of nearly two years. These results are compared to those of the model calculation. In the case of ballastless track, the longitudinal rail restraint is the major parameter governing the additional rail stresses. With the chosen measurement layout, it was also possible to analyse the longitudinal rail restraint occurring in situ under real conditions. All these results provide important knowledge on the calculation of additional rail stresses on bridges with ballastless track.
AB - Additional rail stresses due to long-term deformations of railway viaducts with ballastless track – model and reality. The long-term deformation of the bridge superstructure due to temperature changes of the bridge itself and due to creep and shrinkage in the case of concrete bridges leads to a major part of the additional rail stresses, while welding the rail continuously over bridges with ballastless track. In this paper, the results of an extensive monitoring performed on several long railway viaducts with ballastless track are analysed, in order to verify the actual models used to calculate the additional rail stresses. In a first step the monitoring concept as well as the methodology of the analyse and the plausibility check of the data are presented. In the next step, the monitoring results are analysed to evaluate the temperature load case to apply in the calculation. The focus of the paper is on the analyse of the measured long-term data of rail stresses and rails displacements on a period of nearly two years. These results are compared to those of the model calculation. In the case of ballastless track, the longitudinal rail restraint is the major parameter governing the additional rail stresses. With the chosen measurement layout, it was also possible to analyse the longitudinal rail restraint occurring in situ under real conditions. All these results provide important knowledge on the calculation of additional rail stresses on bridges with ballastless track.
KW - Bridge engineering
KW - Railway construction
KW - ballastless track
KW - bridge
KW - calculation
KW - longitudinal rail restraint
KW - monitoring
KW - rail stresses
KW - track-bridge-interaction
UR - http://www.scopus.com/inward/record.url?scp=85068520334&partnerID=8YFLogxK
U2 - 10.1002/bate.201900025
DO - 10.1002/bate.201900025
M3 - Artikel
VL - 96
SP - 674
EP - 695
JO - Bautechnik
JF - Bautechnik
SN - 0932-8351
IS - 9
ER -