ABSTRACT
This paper presents an analysis of a high embankment on a compressible soil area on the newly designed highway route Sebes Turda, 2nd Lot, km26+000 (Romania, Transylvania, Alba County). Due to the difficult soil conditions and hydro geological issues of the analysed area, the configuration of the newly designed structure of the railway passage and especially the proposed consolidation solution required validation by geotechnical monitoring. Given the intensity of some geomorphological processes and the acceleration of soil degradation in certain sectors as a result of anthropic intervention, several consolidation works were proposed consisting in the use of earthworks (reinforced with geosynthetics) and / or stone columns (with radial drainage and reinforcement function), that were numerically modelled and studied in order to determine the values of the settlements and especially consolidation time. The validation of the designed solutions is decided based on results obtained from experimental trials instrumented by means of monitoring deformations, pressures, and water level variations (free and under pressure). The results based on monitoring represent criteria for choosing the consolidation solution and especially a validation / correction of the constitutive model for the foundation ground. Details regarding laboratory test results correlated with in situ testing and modelling of soil structure interaction will be approached, as well as presented by comparison with back analysis results.
