Conference paper Open Access

Guidelines and codes for liquefaction mitigation by ground improvement

Giuseppe Modoni; Paolo Croce; Roberta Proia; Rose Line Spacagna

Ground improvement has become one of the most effective tools of geotechnical engineering, being
adopted for an always larger variety of civil engineering applications. To reduce the role of
subjective choices of operators, the use of different techniques tends to be codified by specific
guidelines. In the European Union there is an ongoing effort to standardize execution and design
within codes continuously reviewed by designated committees. A widespread and systematic
standardisation on the ground improvement as a mean to mitigate the effects of liquefaction on
buildings and infrastructures is missing. The paper presents and overview of traditional and new
ground improvement technologies suitable for this application. The methods are firstly classified by
considering their effects on the ground (e.g. densification, stabilization, drainage, desaturation,
etc.). Design principles are then outlined for new or pre-existing buildings and infrastructures,
considering the ongoing review process of the design Eurocodes.

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