Abstract
Abstract In order to correctly model the behaviour of a building under load, it is necessary to take into account the displacement of the subsoil under the foundations. The subsoil is a material with typically non-linear behaviour. This paper presents an example of the modelling of a tall, 14-storey, building located in Lublin. The building was constructed on loess subsoil, with the use of a base slab. The subsoil lying directly beneath the foundations was described using the Modified Cam-Clay model, while the linear elastic perfectly plastic model with the Coulomb-Mohr failure criterion was used for the deeper subsoil. The parameters of the subsoil model were derived on the basis of the results of CPT soundings and laboratory oedometer tests. In numerical FEM analyses, the floors of the building were added in subsequent calculation steps, simulating the actual process of building construction. The results of the calculations involved the displacements taken in the subsequent calculation steps, which were compared with the displacements of 14 geodetic benchmarks placed in the slab.
Highlights
The interaction between building structures and subsoil is usually analysed in two dimensions
This paper presents an example of the modelling of a tall, 14-storey, building located in Lublin
This paper presents an example of a numerical analysis of a tall building, founded on a base slab on loess soil
Summary
The interaction between building structures and subsoil is usually analysed in two dimensions. Calculations are usually done on a characteristic cross-section of the structure in a single plane [1,2,3]. In the case of axially symmetrical tasks, a section of the structure can be used [4]. Analyses of three-dimensional tasks encompassing buildings with the subsoil body are rarely performed, due to their high complexity. The creation of three-dimensional building models often ends with the foundations, with the as-
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