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SUMMARY:Pile foundations in laterally spreading soil: mechanisms of respon
 se and guidance for design - Jenny Haskell\, CUED
DTSTART:20130606T150000Z
DTEND:20130606T154500Z
UID:TALK44934@talks.cam.ac.uk
CONTACT:Anama Lowday
DESCRIPTION:Pile foundations are typically used to support engineering str
 uctures where the surface soil is of poor quality. Often this soil is high
 ly liquefiable when subject to seismic shaking. Lateral spreading\, a phen
 omenon associated with earthquake-induced soil liquefaction\, can impose p
 articularly large lateral loads on pile foundations through the gross hori
 zontal movement of liquefied soil. The interaction between the soil\, pile
 s\, and superstructure\, both during and after an earthquake\, is inherent
 ly complex and many fundamental aspects of this interaction are not yet fu
 lly understood. This seminar explores the relationships between several fu
 ndamental design parameters (including pile spacing\, and pile tip/cap fix
 ity)\, the mechanism of soil-pile interaction\, and the resulting foundati
 on performance.\n\nCentrifuge testing of idealised pile groups is the prim
 ary method by which the problem has been explored. The experimental progra
 mme was underway at the time of the recent major earthquakes in Christchur
 ch\, affording a unique opportunity to incorporate observations from the f
 ield into the design of the centrifuge models. This seminar compares the m
 echanisms of pile-laterally spreading soil interaction observed in the fie
 ld and the centrifuge tests\, considers the validity of common assumptions
  made in the design of physical models for piles in laterally spreading so
 il and indicates some potential consequences for seismic foundation design
 .\n
LOCATION:Engineering Department - Lecture Room 3A
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