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A. Eichhorn, J. Fabiankowitsch, M. Haberler-Weber, A. Reiterer:
"Investigation of Dynamic Thermal Effects with Nonparametric and "Parametric" Deformation Models";
Talk: 13th FIG International Symposium on Deformation Measurements and Analysis; 4th IAG Symposium on Geodesy for Geotechnical and Structural Engineering, Lissabon, Portugal; 2008-05-12 - 2008-05-15; in: "Proceedings 13th FIG Symposium on Deformation Measurements and Analysis/4th IAG Symposium of Geotechnical and Structural Engineering", LNEC Lisbon (ed.); (2008), Paper ID MOD2/4, 11 pages.

The Viennese theatre `Etablissement Ronacher´ was founded in 1871 and is one of
the oldest theatres in Vienna. Since 1987 the listed building is integrated in the `Vereinigte
Bühnen Wien´ cooperation and serves for the presentation of musicals. Increasing numbers of
spectators and the necessity for modernisation of the infrastructure require a complete
rehabilitation which started in 2006 and is finished in spring 2008. The stability control of the
theatre demands a permanent geodetic monitoring for the whole construction process.
Especially the theatre ceiling is affected by significant mechanical and thermal loads.
The first part of the paper contains a short description of construction process, permanent
monitoring system for the ceiling (based on tacheometer measurements) and the principal
strategy for automated alerting via e-mail or SMS.
The second part of the paper deals with the investigation of the displacements in selected
material points. A special focus is set on the quantification of thermal effects caused by
changes of the temperature gradient between roof truss and auditorium. It is shown that `black
box´ models (e.g. Artificial Neural Networks, Fuzzy Methods etc.) as well as `grey box´
models (e.g. analogous spring-damp-systems identified by Kalman-filtering) are suitable to
quantify and predict the deformation behaviour. Advantages and disadvantages of the
different applications are discussed.

Project Head Johannes Fabiankowitsch:
Entwicklung und Einführung eines Geo-Monitoring Systems (KE 2007 offen)