Abstract
New segmental concrete bridge has been built near the city Žilina, aligned on European highway corridor E 50. The bridge is composed of the two separate precast prestressed box girder structure constructed by balanced cantilever method. The total length of both structures is 1042 m. The similar superstructure consists of a total of eighteen continuous spans with main spans of 60.5 m. The construction process, load carrying capacity and monitoring of the bridge has been investigated before the opening of the bridge. The paper presents verification of the structural behaviour of the bridge under static load compared to predicted model for both precast prestressed structures.
Highlights
The use of precast concrete box girder was chosen as the flexible system and appropriate method in a municipal zone
The major part of the work is performed in the precasting yard and erection process can start simultaneously with the foundation work
The structure changes in static system, in support, loading and magnitude of external prestressing
Summary
The use of precast concrete box girder was chosen as the flexible system and appropriate method in a municipal zone One advantage of this technique is elimination of conventional falsework and temporary supports by adopting cantilever construction method. The structure changes in static system, in support, loading and magnitude of external prestressing. Bridge monitoring is a complement to a load testing. It could detect the abnormal behaviour during construction stage, service period and deterioration of the bridge. The static and dynamic test (right bridge) was performed in November, 2017. These data can be used to check future condition of the bridge in relation to the initial condition
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