Laboratory testing of old bridge girdersKreslin, Maja (Avtor) Kosič, Mirko (Avtor) Šajna, Aljoša (Avtor) Anžlin, Andrej (Avtor) Hekič, Doron (Avtor) Požonec, Vladimir (Avtor) Triller, Petra (Avtor) laboratory testingprestressed girdersassessmentload testoperational modal analysisdamageacoustic emissionThis paper presents key results on the laboratory testing of old girders removed from a flood-damaged bridge located near Ljubljana, Slovenia. The structure was widened in 1989 to accommodate pedestrians and cyclists by integrating prefabricated prestressed reinforced concrete T-girders. To assess the structural behaviour of the bridge, six girders were subjected to a rigorous testing program involving bending and shear tests in a laboratory setting. The tests were performed on girders with static lengths of 12.20 meters and 9.90 meters. The program aimed to evaluate the structural performance of the girders. Preliminary results indicate satisfactory structural behaviour of the prestressed T-girders under the applied loads, with insights into their performance under both bending and shear stresses. This study contributes valuable data for assessing the long-term behaviour of bridges. The outcomes are particularly relevant for optimising resource allocation in bridge rehabilitation projects and ensuring safety and functionality in transportation networks.Verlag der Technischen Universität Graz20252026-01-22 11:18:15Neznano25534sl