Abstract
This article describes the construction of a building with four aboveground floors and one underground floor as part of the ongoing development of Warsaw’s city center. A 3D numerical model was developed to reflect the spatial and structural solutions of the new building based on the design documentation with regard to the outcomes of geotechnical tests, the actual phases of work completed, the results of the geodetic measurements carried out in individual phases of the building implementation, and the characteristics of the existing adjacent buildings. The 3D numerical model was calibrated taking into account the results of the geodetic measurements of the benchmarks stabilized on the adjacent buildings. The numerical models of the building were used to analyze a number of multiple-step variants, taking into account the increase in the number of aboveground floors (from 1 to 4) and underground floors (by 1), as well as the increase in the projected area of the underground part compared to the area of the site designated for development. The paper presents the conclusions of our analyses, which may be helpful to others designing buildings in intensively urbanized areas and guide them in selecting the best solution.
Highlights
Variant A and the values of vertical displacements obtained from the geodetic measurement of benchmarks on neighboring buildings were compared
Detailed comparative analyses were carried out for the part with an underground floor made with one technology in the vicinity of a high-rise building at 1B Ludna Street
Detailed comparative analyses were carried out for the part with an underground floor made with one technology in the vicinity of a high-rise (c)
Summary
In order to evaluate the technical state of buildings located in the zone of impact and determine the permissible ground subsoil displacements for this development, decisions need to be made. These decisions concern factors such as the selection of a design solution for the construction of a new building and the technology to be used, as well as whether it is necessary to strengthen the structures of buildings existing in the zone of impact. The necessity of strengthening these existing structures must be evaluated
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