Seismic safety of valuable non-structural elements in RC buildings: Floor Response Spectrum approaches
Autor: | Irene Rocca, Anna Saetta, Marco Bovo, Luisa Berto, Marco Savoia |
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Přispěvatelé: | Berto L., Bovo M., Rocca I., Saetta A., Savoia M. |
Rok vydání: | 2020 |
Předmět: |
Building codes
Computer science 0211 other engineering and technologies 020101 civil engineering 02 engineering and technology Building design 0201 civil engineering Acceleration 021105 building & construction Seismic assessment Limit state design Floor response spectra Non-structural elements Seismic demand Valuable element Response spectrum Valuable elements Civil and Structural Engineering Parametric statistics business.industry Building code Structural engineering Non-structural element Nonlinear system business Host (network) Seismic safety |
Zdroj: | Engineering Structures. 205:110081 |
ISSN: | 0141-0296 |
Popis: | The seismic performances of non-structural (NS) components belonging to the category of “valuable elements”, i.e. elements characterized by high value in terms of economic, cultural or strategic purposes, represent nowadays a crucial aspect in seismic safety design and assessment of new and existing buildings. Actually, most valuable NS elements are simply-supported objects, which can be classified as acceleration-sensitive NS elements. Frequently, these elements can be considered dynamically uncoupled from the primary structure to which they are connected, thereby justifying the Floor Response Spectrum methods usually adopted in literature and by most of building codes. This paper presents an extensive parametric study of floor response spectra obtained by linear and nonlinear numerical modeling of RC structures. Two sets of 30 horizontal ground motion scaled acceleration records are generated according to the Ultimate Limit State (ULS) and the Damage Limitation State (DLS) spectra adopted for building design. The numerical floor response spectra and those proposed by codes and international standards are critically compared, and the Peak Floor Acceleration (PFA) and the Peak Floor Velocity (PFV) profiles along the building height are discussed. Finally, a simplified method based on the “stability charts” is developed to assess the seismic safety of free standing NS elements located at the upper floors of the host buildings. |
Databáze: | OpenAIRE |
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