Åby river bridge (object state)

A condition of an object at a particular time, reflecting the object's ability to fulfil it's requirements.

Properties

Element type

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Object state

Summary

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It was found that the bridge could withstand loading corresponding to four times the highest permitted axle-loading, or twice the design load for new bridges, before exhibiting an obvious non-linear behaviour regarding vertical displacement in the mid span. The peak load was achieved at loading approximately 50% higher than the initial non-linear behaviour, where lateral buckling of the top chord limited the structure from carrying more load. The failure can be concluded as being redundant without brittle failure of any of the connections. The results helped save a twin bridge at Rautasjokk on the Iron Ore Line north of Kiruna.

Performance indicator

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Deformation, Displacement, Serviceability issues (vibrations)

"Serviceability issues (vibrations)" is not in the list (Deformation, Displacement, Traffic information via WIM/BWIM, Dynamic response (acceleration/damping/frequencies), Material mechanical properties, Chemical properties, Electrical properties, Load bearing capacity, Spatial properties (concrete cover/duct voids), Other actions (wind/temperature/earthquake), ...) of allowed values for the "Performance indicator" property.

Inspection method

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IoT and sensor systems, Visual inspection

Relations with other elements

Åby river bridge (object state)

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Observed deterioration processes Fatigue

Åby river bridge (case study)

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Concluded object state Åby river bridge (object state)

The inspection method used in this case study to determine the object state was "IoT and sensor systems,Visual inspection". This can include any of the following surveying technologies. Click one of the links below for more information:
IoT and sensor systems

Visual inspection

(No corresponding surveying technology was found.)