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Earthquake Induced Soil Liquefaction: Symptoms and Cures
28th April 2017 @ 4:00 pm - 5:30 pm
Soil liquefaction during earthquakes causes a number of engineering problems. This talk will look at the problem of quantifying large structural settlements and identify a major omission from traditional design. Using a combination of field investigation and physical modelling we will show how design can be improved, and also demonstrate a rather counter-intuitive feature of foundations for large structures. Having then identified some problems we shall have a look at potential solutions, paying particular attention to the novel technique of reinforcing soil with synthetic fibres. The success of these in physical model tests is seen to depend on certain conditions being met that had not been identified by previous work using element testing. This opens the door to future investigations in which root structures are explored as potential mitigation against liquefaction.