EVALUATION OF THE HUMAN COMFORT OF A TALL BUILDING CONSIDERING THE WIND NON-DETERMINISTIC ACTIONS
Palavras-chave:
Buildings, Dynamic structural analysis, Human comfort assessmentResumo
Based on a favourable economic scenario combined with a significative technological
advance in science materials and also construction processes, it must be emphasized that the Brazilian
cities have shown substantial growth, regarding the construction of tall and slender buildings. This
architectural trend has conducted the design of these buildings to structural solutions composed by
very flexible structural systems, resulting in slender buildings with very low natural frequencies values
and therefore more susceptible to excessive vibration problems. In this context, it is possible to
observe the project and construction of tall buildings and a notorious example is the city of Balneário
Camboriú/SC, which has several buildings exceeding 100 meters of height. Usually, in the verification
and structural calculations of buildings, the loads due to the wind action are considered purely static.
However, as the buildings become slender and taller, problems related to excessive vibrations tend to
be present, since the wind actions have a dynamic nature. This way, the main objective of this research
work is to investigate the static and dynamic structural behaviour of a slender 39-storey reinforced
concrete building, with height of 140 meters and a floor plan with 29 meters wide and 9 meters deep,
inspired by the real and existing building constructed at Balneário Camboriú/SC. The numerical
modelling of the investigated building is carried out based on the use of the Finite Element Method
(FEM) utilising the ANSYS computational program. The investigation considers all the usual loads
used in building projects and also the effect of the wind non-deterministic actions, defined based on
the spectral density of the dynamic excitation. The conclusions reached along this study deal with the
critical evaluation of the non-deterministic dynamic structural response of the investigated building
and the assessment of the human comfort.
