MONITORING OF DISPLACEMENT ABUTMENTS OF MOTORWAY VIADUCT
| Autor: | Aleksander Duda, Krzysztof Trojnar |
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| Rok vydání: | 2016 |
| Předmět: | |
| Zdroj: | Journal of Civil Engineering, Environment and Architecture |
| ISSN: | 2300-8903 2300-5130 |
| DOI: | 10.7862/rb.2016.298 |
| Popis: | The aim of the paper is controlling the behavior of the bridge supports of the motorway viaduct WA-164 on strengthened subsoil using soil-cement columns made in DSM technology. Monitoring of the construction was carried out for a period of 16 months by measuring the settlement and rotation of the structure. The settlements were measured by means of the geodesic precision leveling method. Changes in the rotation of the supports were recorded using a inclinometer sensors installed on the walls of the abutments. For mapping of the construction work, numerical models of span and abutments were performed. The abutment was modeled in computer program SOFiSTiK. The stiffness of subsoil was calibrated with regard to the measured settlement of the abutment on DSM columns. The results of field measurements shows that after backfilling the abutments, it leaned in the embankments direction. This is also confirmed by numerical analysis. Monitoring conducted in 2014 showed that settlement is stabilized, and the measured values are safe and lower than the SLS limit stage. Numerical modeling along with geotechnical and geodetic monitoring has enabled a better understanding of the behavior of the bridge foundation on strengthened subsoil and verify the calculation assumptions taken at the stage of design calculations. |
| Databáze: | OpenAIRE |
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