Publication Date:
2020-12-15
Description:
The paper reports about the in-situ and laboratory tests executed in the aftermath of the April 6, 2009 L’Aquila earthquake,
aimed at contributing to the definition of geotechnical models for site response analyses in the Aterno valley. The investigation
started immediately after the earthquake and was entrusted by the Civil Protection Department to different public institutions
and private companies; the experimental activities here reported were coordinated by the Italian Geotechnical Society.
In the paper, after briefly depicting the geological setting of the L’Aquila basin and the Aterno river valley, an overview of
their subsoil conditions is given, based on the geotechnical tests executed before the 2009 earthquake. Thereafter, the specific
investigations planned for the characterization of reconstruction sites and seismic microzonation are widely described. The in
situ tests consisted of seismic dilatometer and multi-receiver surface wave tests; the resulting shear wave velocity profiles were
compared each other, and against independent Down-Hole tests and ambient noise measurements. The laboratory investigation
included cyclic/dynamic simple/torsional shear tests on undisturbed samples. The results, summarized in terms of variation
of stiffness and damping with shear strain, highlighted some peculiar properties of the soils in the Aterno valley, which
could be related to their index properties.
Description:
Published
Description:
20-40
Description:
4T. Sismologia, geofisica e geologia per l'ingegneria sismica
Description:
N/A or not JCR
Repository Name:
Istituto Nazionale di Geofisica e Vulcanologia (INGV)
Type:
article
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