Details
| Original language | English |
|---|---|
| Article number | 45 |
| Journal | Frontiers in Built Environment |
| Volume | 5 |
| Early online date | 10 Apr 2019 |
| Publication status | Published - Apr 2019 |
Abstract
Track–bridge interaction plays a decisive role in the design of long railway bridges due to the high braking and acceleration forces that occur and the fact that the continuous rail is attached to the superstructure. A fundamental parameter for the calculation of the effects of track–bridge interaction is the equivalent longitudinal stiffness of piers and abutments with fixed bearings. The equivalent horizontal stiffness is commonly calculated using a pile group model. The static and “dynamic” stiffnesses of the Itz valley railway viaduct were determined experimentally by using a static diagnostic load test and a braking test, which allowed for the verification of the additional rail stresses and the bearing forces with realistic input parameters. Furthermore, numerical 3D FE analyses of the deep foundation system were carried out to provide class-A predictions of the experimental results. In this article, the experimental setup and the execution and evaluation of the two tests are presented. A comparison of the experimental results and the numerical predictions is also carried out.
Keywords
- Braking test, Diagnostic load test, Experiment, Pier stiffness, Railway viaduct, Track–bridge interaction
ASJC Scopus subject areas
- Social Sciences(all)
- Geography, Planning and Development
- Engineering(all)
- Building and Construction
- Social Sciences(all)
- Urban Studies
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In: Frontiers in Built Environment, Vol. 5, 45, 04.2019.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Experimental Determination of the Longitudinal Pier Stiffness of a Long Railway Viaduct
AU - Wenner, Marc
AU - Meier, Thomas
AU - Wedel, Frederik
AU - Schacht, Gregor
AU - Marx, Steffen
PY - 2019/4
Y1 - 2019/4
N2 - Track–bridge interaction plays a decisive role in the design of long railway bridges due to the high braking and acceleration forces that occur and the fact that the continuous rail is attached to the superstructure. A fundamental parameter for the calculation of the effects of track–bridge interaction is the equivalent longitudinal stiffness of piers and abutments with fixed bearings. The equivalent horizontal stiffness is commonly calculated using a pile group model. The static and “dynamic” stiffnesses of the Itz valley railway viaduct were determined experimentally by using a static diagnostic load test and a braking test, which allowed for the verification of the additional rail stresses and the bearing forces with realistic input parameters. Furthermore, numerical 3D FE analyses of the deep foundation system were carried out to provide class-A predictions of the experimental results. In this article, the experimental setup and the execution and evaluation of the two tests are presented. A comparison of the experimental results and the numerical predictions is also carried out.
AB - Track–bridge interaction plays a decisive role in the design of long railway bridges due to the high braking and acceleration forces that occur and the fact that the continuous rail is attached to the superstructure. A fundamental parameter for the calculation of the effects of track–bridge interaction is the equivalent longitudinal stiffness of piers and abutments with fixed bearings. The equivalent horizontal stiffness is commonly calculated using a pile group model. The static and “dynamic” stiffnesses of the Itz valley railway viaduct were determined experimentally by using a static diagnostic load test and a braking test, which allowed for the verification of the additional rail stresses and the bearing forces with realistic input parameters. Furthermore, numerical 3D FE analyses of the deep foundation system were carried out to provide class-A predictions of the experimental results. In this article, the experimental setup and the execution and evaluation of the two tests are presented. A comparison of the experimental results and the numerical predictions is also carried out.
KW - Braking test
KW - Diagnostic load test
KW - Experiment
KW - Pier stiffness
KW - Railway viaduct
KW - Track–bridge interaction
UR - http://www.scopus.com/inward/record.url?scp=85064199633&partnerID=8YFLogxK
U2 - 10.3389/fbuil.2019.00045
DO - 10.3389/fbuil.2019.00045
M3 - Article
VL - 5
JO - Frontiers in Built Environment
JF - Frontiers in Built Environment
M1 - 45
ER -