Foundation-structure interaction on high-rise buildings

Alexandre Duarte Gusmão, Augusto Costa Silva, Maurício Martines Sales
2020 Soils and Rocks  
This article addresses the importance of considering foundation-structure interaction in the design of high-rise buildings. Embedding the behavior of the foundation in the analysis of structures is fundamental to simulate the real deformability of these constructions. On the foundation design side, the addition of structure stiffness implies in the reduction of maximum settlement and angular distortions. On the structural dimensioning side, the consideration of the foundation settlement
more » ... the flexibility of the structure by changing internal efforts in several parts, which is against safety in many cases. The study of a building with 50 floors is presented, as well as the report of 13 cases of construction where the settlements measurements reached more than 10 times the results of the load test of the isolated element, illustrating the effect of the interaction between different foundation elements. There was a considerable increase in the loads of corner columns and an increase in the overall building's stability. The g z that is a parameter associated to second-order effects increased exponentially with the increase in the building's non-verticality. Gusmão et al., Soils and Rocks 43(3): 441-459 (2020) 441 Article hypothetical tall building evaluated with and without the foundation-structure interaction process, and it compares settlement measurements in real buildings, highlighting the importance of incorporating the settlement superposition effect between different foundation elements in the study of the interaction with the structure.
doi:10.28927/sr.433441 fatcat:lkw6o6mv4zh5hlkydynstnic4m