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|Authors: ||Pingue, F.*|
Petrazzuoli, S. M.*
De Martino, P.*
|Title: ||Monitoring system of buildings with high vulnerability in presence of slow ground deformations (The Campi Flegrei, Italy, case)|
|Title of journal: ||Measurement|
|Series/Report no.: ||/44(2011)|
|Issue Date: ||2011|
|Keywords: ||Ground deformation|
Campi Flegrei bradyseism
Building damage detection
|Abstract: ||In this work we illustrate the results of some laboratory and full scale experiments which
have the purposes of analysing the performance of different types of monitoring equipments
in detection of damage level in masonry buildings.
Such experiments involved monitoring, by means of optical fibre strain-metre and total
laser station, of a selected building that, owing to its position in the active caldera of the
Campi Flegrei (Southern Italy), could undergo remarkable ground shaking and large,
although very slow, ground movements (bradyseismic crises) of volcanic origin.
The field geodetic monitoring has been realised by an automatic system of topographical
3D survey, based on two automatic Total Station Leica TCA2003 and by increasing the
number of benchmarks of the levelling network in the area near the building.
The experiments have shown that structure deformations caused by elastic phase, when
the building undergoes elastic deformation, is close or under the limit of detection through
laser total station (about 1–2 mm), while, when the damage occurs, deformations increase
up to values beyond 10–20 mm easily detectable by geodetic methods.
The optical fibre monitoring provides good results in elastic phase, whereas as the damage
level rises up the data become more and more difficult to understand.
In conclusion the paper shows that the geodetic techniques are very useful in structural
quasi real-time monitoring for analysing the behaviour of masonry buildings damaged by
ground movements induced by landslide phenomena, bradyseism or intrinsic structural
|Appears in Collections:||04.03.09. Instruments and techniques|
Papers Published / Papers in press
04.03.06. Measurements and monitoring
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