Electro-osmosis to stabilise the leaning Tower of Pisa

 

The Tower of Pisa was affected by leaning instability, a phenomenon controlled by the stiffness of the subsoil, rather than by its strength. In order to permanently stabilise the monument, while keeping an absolute respect of its integrity, the International Committee appointed by the Italian government reduced its inclination by half a degree, that is less than 10% of the inclination in the early `90s, amounting to 5.5 degrees. Among the possible means to achieve this result, the Com-

 

The Tower of Pisa was affected by leaning instability, a phenomenon controlled by the stiffness of the subsoil, rather than by its strength. In order to permanently stabilise the monument, while keeping an absolute respect of its integrity, the International Committee appointed by the Italian government reduced its inclination by half a degree, that is less than 10% of the inclination in the early `90s, amounting to 5.5 degrees. Among the possible means to achieve this result, the Com-

mittee selected a controlled removal of soil from below the “high" side of the foundation (underexcavation). In an early stage, electroosmotic consolidation of a soft clay layer known as Pancone was considered.

The paper briefly reports the analyses and experimental investigation carried out to explore this solution, including a large scale field experiment. The reasons why the technique was rejected are finally outlined.


  The Towe …


AUTORI: Viggiani C., Squeglia N.
RIG ANNO:2002 NUMERO:1
Numero di pagine: 29


Allegato: https://associazionegeotecnica.it/wp-content/uploads/2010/03/RIG_2003_1_29.pdf
Allegato:
Articolo completo: https://associazionegeotecnica.it/wp-content/uploads/2010/03/RIG_2003_1_29.pdf