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SUMMARY:Performance-based design in geotechnical engineering - Professor M
 alcolm Bolton\, CUED
DTSTART:20120525T140000Z
DTEND:20120525T163000Z
UID:TALK36582@talks.cam.ac.uk
CONTACT:Jen Fusiello
DESCRIPTION:Engineering design consists of a sequence of decisions which s
 hould satisfy the client’s objective performance \nrequirements. This le
 cture will argue that an assessment of geotechnical performance must invol
 ve ground \ndisplacements\, and that the traditional approach of specifyin
 g safety factors is potentially wasteful. In particular\, the \nLimit Stat
 e Design (LSD) approach adopted in the Eurocodes will be shown to lack obj
 ectivity and therefore to be \ninadequate to the needs of clients and soci
 ety at large. Improvements will be proposed through the adoption of \nMobi
 lizeable Strength Design (MSD) principles in which the designer explicitly
  considers the stress-strain \nbehaviour of the ground.\nCentral to the MS
 D approach will be an assessment of the possible deformability and strengt
 h of the soil that lies \nwithin the anticipated deformation mechanism of 
 the proposed geo-structure. Displacements are then calculated by \napplyin
 g the principle of conservation of energy to the deformation mechanism. Th
 is leaves the designer with an \nimplicit assessment of deformations befor
 e any other checks which might later be made by Finite Element Analysis \n
 (FEA)\, and ensures that the intended design performance can always be che
 cked by monitoring during construction. \nExamples of the application of M
 SD will include earth retaining structures\, slopes and foundations.
LOCATION:Engineering Department - Lecture Room 4
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