WIT Press


Time Evolution Of Stability Of Leaning Towers

Price

Free (open access)

Paper DOI

10.2495/STR990471

Volume

42

Pages

10

Published

1999

Size

724 kb

Author(s)

F. Federico & S. Ferlisi

Abstract

The paper deals with the time-history of tilting and final conditions - long term equilibrium or failure - of a tower (T) resting on deformable soils (S). The analysis is carried out on the base of a visco-elasto-plastic constitutive model, with a non associated flow rule, representing the mechanical response of the soil-foundation (F) geotechnical system, under loads whose intensity varies due to the time evolution of displacements of both F and T. The hardening function depends on the ratio between the current overturning moment on F and its ultimate value as well as on the ratio between the weight of the T-F system and the bearing capacity of the S-F system. The analysis reveals that the rotation of the T-F-S system may evolve accordin

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