3rd International Conference on Road and Rail Infrastructure (CETRA 2014)

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Field Value
Creator Stjepan Lakušić; University of Zagreb Faculty of Civil Engineering
Ivo Haladin; University of Zagreb Faculty of Civil Engineering Department for Transportation
Marijan Bogut; Koncar Institut za elektricna mjerenja
Subject floating slab track, tram, vibrations, underground garage, exploitation
Description Light rail traffic presents significant advantages in a heavy populated urban environment in terms of quality of service, volume of passengers, delays etc. Vibrations caused by tramway vehicles passing through highly populated urban areas present a great impact on the quality of life of citizens. Beside the life quality, severe vibrations can also influence structural integrity of surrounding buildings and other infrastructure. In a crowded urban environment, underground structures such as underpasses, garages or water supply and sewage facilities are often located directly under the rail track structures. In such scenarios, special attention has to be pointed to track design in terms of vibration attenuation, as well as underground structure design in respect to additional dynamical loads presented by the overhead rail traffic. The paper presents a case-study of vibration measurement and analysis on an underground garage constructed under a tramway line on Kvaternik square in Zagreb. Rail discontinuities at turnouts and crossings present an impact point between tram vehicles and the track and therefore induce severe vibrations. To analyse tram induced vibrations and its effects on
an underground garage structure, measurements on several locations have been conducted, including square surface and underground garage slab structures. Measurements have been conducted immediately after the construction of the garage and tram track on top of it, and repeated after 6 years of exploitation, using same principles and under same traffic load. This way the influence of exploitation wear and aging could be evaluated and analysed. Additionally, vibrations in the working environment of underground garage staff have also been considered. Such practice of periodical vibration measurements serves as an early warning system for any unexpected structural defects and provides a tool for future decision making and maintenance works scheduling.
Publisher CETRA 2014
Date 2017-02-28 16:47:32
Type Peer-reviewed Paper
Source CETRA 2014; 3rd International Conference on Road and Rail Infrastructure
Language en
Rights <p>Authors who submit to this conference agree to the following terms:<br /> <strong>a)</strong> Authors retain copyright over their work, while allowing the conference to place this unpublished work under a <a href="">Creative Commons Attribution License</a>, which allows others to freely access, use, and share the work, with an acknowledgement of the work's authorship and its initial presentation at this conference. <br /> <strong>b)</strong> Submitted full papers will be published in the book of proceedings "Road and Rail Infrastructure II" as well as in digital form (on a CD). Conference organiser is allowed to publish author's names, institution and country as well as the paper abstract on the conference web site.</p>

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