Publication Date:
2021-05-12
Description:
The rise of human activities and the constant increase of vehicles traffic in the cities,
and in particular of heavy vehicles such as buses and trucks, causes continues ambient
vibrations that can detrimentally affect the conservation of built artifacts, especially
historical constructions. The effects of urban vibrations on buildings and monuments
are far from being fully investigated. In general, peak levels of traffic-induced vibrations
are rarely high enough to be the main cause of heavy structural damages. On the other
hand, they contribute to the process of deterioration by adding extra stresses—through
fatigue damage accumulation occurring as a result of long periods of exposure to
low levels of vibration—or by contributing to soil densification—which can lead to the
settlement of building foundations. As such, the estimation of threshold levels above
which traffic-induced vibrations may cause damages to monumental buildings requires
specific studies including long-time monitoring campaigns. Data from experimental
campaign can, indeed, be used to extract information on the variation of dynamic
properties of buildings, thus providing valuable pieces of information for a complete
knowledge to plan effective preservation interventions. The present work aims to identify
the effects of traffic induced urban vibrations on the two Towers of Bologna, particularly
prone to fatigue-related damages and close to a high transit of vehicles, through a
preliminary analysis of data from several dynamic monitoring campaigns conducted
during the last years.
Description:
Published
Description:
id 85
Description:
5T. Sismologia, geofisica e geologia per l'ingegneria sismica
Description:
JCR Journal
Keywords:
dynamic identification, structural health monitoring, masonry towers, ambient vibrations, traffic induced effects
;
structural health of historical buildings
Repository Name:
Istituto Nazionale di Geofisica e Vulcanologia (INGV)
Type:
article
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