Bridge over L110 (case study)

The bridge object over the state road L110 is located on the new Vienna - St. Pölten line, built in 2012, and crosses two tracks. The prestressed concrete bridge construction consits of a three-span continuous girder system with span ratios of 19.0 m - 22.0 m - 19.0 m. The support structure consists of two abutments and two compact pillars, deeply founded. The structure is supported with abutments and pillars as point support by means of deformation bearings.

Object description

(No object description available.)

Civil engineering type

:

Railway network Bridge

Year of construction

:

2012

Composed of materials

:

Prestressed concrete, Steel

Location coordinates

:

48° 14' 24.63" N, 15° 45' 50.66" E

Country

:

Austria

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Object analysis

The test object was instrumented to characterize the expansion/displacement behavior of the rails and the displacements of the supporting structure. The southern track in the direction to St. Pölten was defined as a measuring track and equipped with a complete test set-up. The recording of the measurement data for the measurement track took place both for the period before the production of the rail joint and afterwards.

Case type

:

Other

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Object state

The designed measuring program comprised the recording of the rail longitudinal expansion and the rail longitudinal displacements in the rail fastening in defined measuring cross-sections. In addition, the relative displacements between the ends of the structure and abutments were measured and documented. The air, rail and structure temperatures were recorded and documented during the entire measurement period. By applying an accelerometer to the structure, any influence on the measurement data by construction site operations was detected and recorded. After the opening for traffic and commissioning in December 2012, additional sensors and measuring instruments were used to record the effects of vehicle-related loads such as vertical structural deformation and emergency braking attempts.

Observed deterioration processes

:

Railstresses

Observed damage types

:

Displacement, Deformation

Performance indicators

:

Deformation, Displacement

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Images

Documents

This case study was contributed by Lisa Ptacek of Universität für Bodenkultur Wien. Last edited by technical staff.