Probabilistic assessment of wind-loaded facade elements
conference paper
Façade elements are themost vulnerable parts of buildings with respect to
wind loading. In this paper it is assessed to what extent wind-loaded façade elements
fulfill the minimum reliability requirements as set in the Eurocodes. The reliability
analysis needed for this assessment should account for the uncertainties in each of
the parameters relevant for design; both in the structural resistance part and in the
wind-loading part. Additionally, the analysis needs to account for the uncertainties
in the physical models as such. Until now, no generally applicable assessment procedure
exists for this purpose. By combining the knowledge of existing literature, this
paper provides a generally applicable assessment procedure that is able to determine
the structural reliability of wind loaded façade elements in terms of the failure probability.
The assessment procedure uses in-situ wind speed measurements obtained
from meteorological stations and location-specific pressure coefficient measurements
obtained from boundary-layer wind-tunnels. Wind-directionality effects are
taken into account explicitly. In order to show its potential, the assessment procedure
is applied on a case-study. The results show that, due to wind-directionality
effects, the failure probability of the façade elements is highly dependent on the orientation
of the building. Furthermore the results show that the failure probability is
almost fully determined by the governing incident wind-directions only.
wind loading. In this paper it is assessed to what extent wind-loaded façade elements
fulfill the minimum reliability requirements as set in the Eurocodes. The reliability
analysis needed for this assessment should account for the uncertainties in each of
the parameters relevant for design; both in the structural resistance part and in the
wind-loading part. Additionally, the analysis needs to account for the uncertainties
in the physical models as such. Until now, no generally applicable assessment procedure
exists for this purpose. By combining the knowledge of existing literature, this
paper provides a generally applicable assessment procedure that is able to determine
the structural reliability of wind loaded façade elements in terms of the failure probability.
The assessment procedure uses in-situ wind speed measurements obtained
from meteorological stations and location-specific pressure coefficient measurements
obtained from boundary-layer wind-tunnels. Wind-directionality effects are
taken into account explicitly. In order to show its potential, the assessment procedure
is applied on a case-study. The results show that, due to wind-directionality
effects, the failure probability of the façade elements is highly dependent on the orientation
of the building. Furthermore the results show that the failure probability is
almost fully determined by the governing incident wind-directions only.
TNO Identifier
575237
ISBN
978-3-319-47885-2
Publisher
Springer International Publishing
Source title
International Probabilistic Workshop (IPW2016), Ghent, Belgium
Editor(s)
Caspeele, R.
Taerwe, L.
Proske, D.
Taerwe, L.
Proske, D.
Pages
345-364
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