SECED 2019 Conference: Earthquake risk and engineering towards a resilient world,
Abstract
Soil liquefaction at the ground often cause damages to various infrastructure assets.
Its consequences have been widely made evident by the performance of the Telecommunication
Network Services during the 2010-2011 Canterbury Earthquake Sequence (CES) which stroke
the Canterbury region in New Zealand. Despite the relevance of loss of functionality of the
telecommunication system, especially during the post-event recovery phase, studies in the
literature on the network performance about damages due to liquefaction are still limited.
Exploring an unprecedented database of in-situ geotechnical inspections collected after the CES,
this research first compares alternative empirical liquefaction-triggering models available in the
literature with observation maps. Then, a soil column profile is evaluated adopting a constitutive
model based on generalised plasticity (‘modified Pastor-Zienkiewicz’) through a Finite Element
based home-developed code. The obtained results from the numerical models are finally crosschecked with the empirical analyses, the existing liquefaction investigation maps and field
observations collected in the aftermath of the CES