The “Palazzo della Civiltà Italiana” is a monumental building characterized by structural system made of reinforced concrete frames (cast in situ) and composite floors (reinforced concrete and hollow bricks), following a construction technology quite common in Italy. The floors are characterised by relatively large spans of about 10.0 meters. The construction took place between 1939 and 1940, presumably according to the construction code of the time published in 1939. The authors have coordinated a comprehensive experimental campaign aimed at the identification of the characteristics of the construction materials and members, as well as the identification of possible damages. Based upon the experimental results a number of analytical and numerical investigations have been developed in order to identify the structural actions and deformations. Fortunate circumstances have allowed the authors to have at hand the original technical drawings of the structural designer. This has proved crucial in order to develop grounded reliability analysis for the building structure in its present state, which still sees the building in its “original” configuration (no substantial intervention of structural retrofit or rehabilitation have indeed been implemented so far). In order to assess the seismic risk of the building structure a specific hazard analysis (PSHA) was developed to obtain a more precise probabilistic characterization of the expected seismic action (than that suggested for new building con-struction). The two major reliability issues identified though the analysis are relate to: (a) the load bearing capacities of the floors (the live load of the original design are inferior to those required nowadays to guarantee a sufficiently “flexible” use of the spaces), and (b) the seismic vulnerability of the building original structure. The authors have developed simple (non invasive) structural solutions in order to bring the “Palazzo” to the level of structural safety required by current standards. The strengthening and retrofit design encompasses the use of seismic dampers to be inserted in a central “light well” (already present in the building) and of “pre-loaded” steel beams to be placed underneath the floors.

Structural reliability of the “Palazzo della Civiltà Italiana” in Rome EUR

CECCOLI, CLAUDIO;TROMBETTI, TOMASO;
2008

Abstract

The “Palazzo della Civiltà Italiana” is a monumental building characterized by structural system made of reinforced concrete frames (cast in situ) and composite floors (reinforced concrete and hollow bricks), following a construction technology quite common in Italy. The floors are characterised by relatively large spans of about 10.0 meters. The construction took place between 1939 and 1940, presumably according to the construction code of the time published in 1939. The authors have coordinated a comprehensive experimental campaign aimed at the identification of the characteristics of the construction materials and members, as well as the identification of possible damages. Based upon the experimental results a number of analytical and numerical investigations have been developed in order to identify the structural actions and deformations. Fortunate circumstances have allowed the authors to have at hand the original technical drawings of the structural designer. This has proved crucial in order to develop grounded reliability analysis for the building structure in its present state, which still sees the building in its “original” configuration (no substantial intervention of structural retrofit or rehabilitation have indeed been implemented so far). In order to assess the seismic risk of the building structure a specific hazard analysis (PSHA) was developed to obtain a more precise probabilistic characterization of the expected seismic action (than that suggested for new building con-struction). The two major reliability issues identified though the analysis are relate to: (a) the load bearing capacities of the floors (the live load of the original design are inferior to those required nowadays to guarantee a sufficiently “flexible” use of the spaces), and (b) the seismic vulnerability of the building original structure. The authors have developed simple (non invasive) structural solutions in order to bring the “Palazzo” to the level of structural safety required by current standards. The strengthening and retrofit design encompasses the use of seismic dampers to be inserted in a central “light well” (already present in the building) and of “pre-loaded” steel beams to be placed underneath the floors.
Life-Cycle Civil Engineering
715
720
C. Ceccoli ;T. Trombetti; D. Biondi
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11585/74523
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