| 1. |
|
|
| 2. |
- Johansson, Susanne, 1975, et al.
(författare)
-
Skåne 2006
- 2007
-
Rapport (övrigt vetenskapligt/konstnärligt)
|
|
| 3. |
- Johansson, Susanne, 1975, et al.
(författare)
-
Västra Götaland 2006
- 2007
-
Rapport (övrigt vetenskapligt/konstnärligt)
|
|
| 4. |
- Johansson, Susanne, 1975, et al.
(författare)
-
Västra Götaland 2007
- 2008
-
Rapport (övrigt vetenskapligt/konstnärligt)
|
|
| 5. |
|
|
| 6. |
|
|
| 7. |
- Sabourova, Natalia, 1975-, et al.
(författare)
-
Railway Concrete Arch Bridge over Kalix River at Långforsen : Dynamic Properties and Load-Carrying Capacity
- 2019
-
Rapport (refereegranskat)abstract
- The concrete arch bridge over Kalix River at Långforsen was built in 1960 and has a mid-span of 89,5 m and a height of 13,7 m. The bridge owner, Trafikverket, wanted to increase its allowable axle load from 225 to 300 kN. Field tests were carried out under service condition and with ambient vibrations. The test results were used to update and validate Finite Element Models. At last, the refined models were used to check the possibility to increase the axle load.According to earlier assessments, most parts of the bridge is capable of carrying an axle load of 330 kN. The only critical sections are located in the beams carrying the rail on top of the arch in the section where the beams are united with the arch. Here the stresses in the longitudinal bottom reinforcement are slightly too high.These sections have been studied in a FEM model for different loads and results show maximum strains of about 50·10-6 corresponding to stresses of only about 10 MPa in the reinforcement in the critical sections. Live load vertical deflections of the crown of the arch is of the order of only ± 6 mm. Dynamic studies have also been made showing that fatigue is no issue. Altogether the studies show that the bridge is able to carry an increased axle load of 300 kN without problems.
|
|
| 8. |
- Stenlund, Anders, et al.
(författare)
-
D1.4 Railway Bridge Research : A Survey 2005 Sustainable Bridges SB-D1.4
- 2005
-
Rapport (refereegranskat)abstract
- An overview is reported of current research regarding railway bridges. Research themes and active institutes and organisations are listed.The work has been carried out during 2004/2005 in the project “Sustainable Bridges –Assessment for Future Traffic Demands and Longer Lives”, an Integrated Research Projectwithin the Sixth Framework Programme of the European Commission.Most of the material has been obtained from the web but personal knowledge and direct communication with some of the institutes/organisations has also been used. An overview like this can never be complete and we apologize for all unintended omissions.Research is going on all over the world. The most studied subjects are: Assessment Structural behaviour and monitoring Repair and strengthening Dynamic effects and vibration Life cycle analysis
|
|
