Cable-stayed bridge Obere Argen (object state)

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


Element type
Object state
The optical inspection of the ropes revealed damage to the coating, bulges, bubbles, rust spots and broken wires in the outer layer. No breaks could be found in the rope anchoring. Any bumps that are discovered are recorded and documented in a bump log. It is assumed that the occurrence of bulges was caused by larger deformations with cutting force redistribution in the center of the field, which were measured from 1990 onwards. From 2003 to 2007 no further changes could be measured. The seepage pipes at the abutment and the retaining foundation were driven over with a camera in 2005. This inspection showed that the pipes were sintered up to 70% or clogged by external influences and only a part of the pipes could be inspected by a camera inspection. In 2013 the drainage is to be made accessible with inspection shafts. Only then can a decision be made as to whether repairs can be carried out.
Prior information
Previous inspections, Monitoring data, Test manual
"Test manual" is not in the list (Drawings, Design documents, Previous inspections, Other, Design standards, Monitoring data, Numerical models, BIM models) of allowed values for the "Prior information" property.
Performance indicator
Deformation, Displacement, Material mechanical properties, Load bearing capacity, Spatial properties (concrete cover/duct voids), Cracks (width/length/pattern), Anomalies (delamination/spalling)
Inspection method
NDT active or passive testing technologies, IoT and sensor systems, Physical methods, Chemical methods, Visual inspection

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

IoT and sensor systems

Physical methods

Chemical methods

Visual inspection

  • (No corresponding surveying technology was found.)