Following damage caused by the 2011 Christchurch earthquakes, the NZ$127.5million Christchurch Town Hall Restoration project is due for completion in 2018. The building is undergoing extensive repairs and a strengthening regime to meet New Zealand’s New Building Standard. One major aspect of the project is the stabilisation of the soil directly beneath the building using interconnected jet-grout columns installed in cell configuration, the purpose of this being to decrease the likelihood and severity of foundation movements caused by earthquake-induced soil liquefaction and lateral spreading. This presentation provides an overview of the technical and practical aspects of the project and also looks at a number of the challenges encountered in regard to the installation of effective and consistent ground treatment by jet grouting.
About Mathias Delapille
Mathias Delapille has a BE (Construction Management) and an ME (Civil Engineering) from the Ei.CESI Engineering School in France.
Mathias is a very skilled Project Engineer with 10 years of project management experience in geotechnical engineering, specialising in ground improvement works for a wide range of residential, commercial and infrastructure developments across France, Australia and worldwide. Mathias just returned from New Zealand where he spent the last 3 years working on various project such as the new Mackays to Peka Peka Expressway or more recently the Christchurch Town Hall conservation project.
Engineers Australia members participating in AGS technical sessions can record attendance on their personal CPD logs. Members should refer to Engineers Australia CPD policy for details on CPD types, requirements and auditing guidelines.