Monitoring Vertical Displacements by Means of Geometric Levelling for Sky Tower Building from Floreasca City Center, Bucharest

摘要

It is widely known that any construction, old or new, suffers, more or less, long term displacements, these displacements can be measured with high precision by using topographical methods. Displacements are mainly influenced by the kind of the soil, where the building stands, by the material's endurance and elasticity, temperature variation, time and by the pressure generated by the construction's own weight. The main purpose of monitoring constructions' behaviour in time is to learn the displacements and deformations that construction suffers in comparison to a given number of known points (benchmarks) situated near the construction but at a well calculated distance so their stability couldn't be affected by the building movements. Nowadays many modern technologies have been developed for real time and online deformation monitoring, but in order to assure the precision required, the monitoring method has to be wisely chosen. This paper presents the high precision geometric levelling method, the network adjustment and the interpretation of obtained data, used to establish the displacements of the tallest construction ever made in Romania, the Sky Tower building, from Floreasca, Bucharest.