Assessment of structural performance of retrofit measures on characteristic interwar structures in Bucharest, Romania
··· lezzter Preis 36.20 ··· 9783869555454 ··· 10361192861 ··· This study is dedicated to the preservation of the heritage of the Modern Movement,particularly through improving the structural response to seismic solicitations, which arecommon in some of the areas where significant works in this style can be found,including Bucharest, Romania. The focus is on developing and validating methodologyaccording to which the vulnerability of `interwar` buildings, which is the other namegiven to the blocks of flats which witnessing the Modern Movement in the Romaniancapital. To complement this study with a geographical generalisation, the modelsproposed have been also tested for selected earthquakes, taking into account that theModern Movement left its traces in form of that very characteristic blocks of flats thereas well.Residences in form of blocks of flats of the Modern Movement have been built inBucharest in the 1930s. They present a reinforced concrete frame structure, which infillwalls of masonry bricks, although the later could only be limitedly taken into account inthis study. However, the method used remains perfectly valid.To determine the impacts of strong ground motion on a certain type of buildings, severalapproaches have been applied:- the static pushover curve analysis- displacement based dynamic time-history analysis- stress-strain approach based on the dynamic time-history analysisThese simulation types have been applied first to simple models, reproducing what in anexperimentallaboratory might be tested, then to models of progressivelly morecomplicated buildings, from regular frame structures, to real building models, which allthe irregularities usual in the building practice in that time. The methodology adoptedincluded use of several computer support tools, beginning with software for convertingaccelerograms, fibre based finite elements, spread shet and database programs.A further step in testing the general validity has been the use of the same methodologyfor simplified models of real buildings which have been found to be of the same typologyas the models studied more extenisivelly. This examination has shown that themethodology proposed is perfectly valid for them. The integration within the generalframe of assessment of structural performance has been made comparing the computeddamages with real damage types. For this purpose a matrix of damages suffered by`interwar` buildings, previously developed by the author, has been used. It proved again,that the predictions for the buildings with the same geometrical characteristics as thosewhich have been object of this study were close to the reality.The innovative part of this study relies in the stress-strain based approach applied tobuilding models of this size. Such an analysis allows not only description of failure modeand determination of limit states eventually reached by the building, but also the specificdetermination of the number and, if necessary, position of structural members sufferingdifferent types of damage. This kind of output can build the input for otherinterdisciplinary studies. Of interest for the author is the economic study regarding theretrofit/repair needs of damaged elements as opposed to preventive retrofit. In thissense, an issue for further research, which has been only marginally handled within thiswork is the retrofit of previously damaged structures, an issue, which perfectly suits intothe methodology already proposed and validated. Hersteller: Cuvillier Verlag Marke: Cuvillier Verlag EAN: 9783869555454 Kat: Hardcover/Naturwissenschaften, Medizin, Informatik, Technik/Geowissenschaften/Stadtplanung, Raumplanung, Landschaftsplanung Lieferzeit: Sofort lieferbar Versandkosten: Ab 20¤ Versandkostenfrei in Deutschland Icon: https://www.inforius-bilder.de/bild/?I=SSFsFLLscYvC34W7DLbOar%2BoyYxB36KAotBVpxiMykU%3D Bild:
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