Deep foundation design on the basis of pile load tests

 

"Geotechnical Design – Part1: General Rules" [CEN, 1994] represents a new set of harmonised technical rules for the design of building foundations and earthworks. The geotechnical design safety analysis incorporated into this standard refers to limit state methods whereby safety is ensured by means of partial safety factors and design values for action, material properties and geometrical data.

 

"Geotechnical Design – Part1: General Rules" [CEN, 1994] represents a new set of harmonised technical rules for the design of building foundations and earthworks. The geotechnical design safety analysis incorporated into this standard refers to limit state methods whereby safety is ensured by means of partial safety factors and design values for action, material properties and geometrical data.

Bearing resistance failure is one ofthe limit states to be considered in the design of deep foundations. According to Eurocode 7 [CEN, 1994], the bearing resistance of these foundations can be checked using the results of static load tests on trial piles. This method is also required as a tool for the demonstration of the validity ofthe other two approaches approved by Eurocode 7 [CEN, 1994] and consisting of empirical or analytical calculation methods and dynamic load tests.

The loading static tests on piles are a common approach in the estimation of the axial capacity of single piles. This paper compares the level of safety against bearing resistance failure obtained by adopting the Eurocode approach with that achieved with the global safety method, currently used. Moreover the expected settlement clue to the working loads and corresponding to the two design methods are also compared. The study shows that the design with Eurocode 7 [CEN, 1994] is generally not very different from that using the global safety factor, but the ratio between permanent and variable actions has great importance.


  "Ge …


AUTORI: Cortellazzo G., Mazzucato A.
RIG ANNO:1999 NUMERO:4
Numero di pagine: 22


Allegato: https://associazionegeotecnica.it/wp-content/uploads/2010/03/RIG_2000_4_22.pdf
Allegato:
Articolo completo: https://associazionegeotecnica.it/wp-content/uploads/2010/03/RIG_2000_4_22.pdf