Non-linear Correlation Coefficients for pushover analysis

Aiming to put forward an improvement on Multimodal Pushover Analysis, a modified version of the modal correlation rule that takes into account the non-linear behavior of structures is proposed. The modification is primarily based on using the correlation coefficients consistent with the mechanical and dynamical properties of the hysteretic oscillators utilized in the MPA method, i.e. determined taking into account the second order statistics pertinent to the non-linear oscillators. Initially, the new correlation coefficients are evaluated by Monte Carlo Simulations (MCS), assuming a spectrum-compatible representation of the seismic input. The results of a large numerical parametric analysis…

Nuove tecniche di rinforzo e adeguamento per elementi in calcestruzzo armato

Sicula Terra, SIKANIE, SICILY LAND, TERRA DI SICILIA

Prove sperimentali in situ su tipica muratura messinese rinforzata con CAM: arco in muratura a piena scala

Il presente lavoro illustra i risultati di una campagna sperimentale di prove in situ recentemente realizzata nella zona di Messina, in particolare il fine della sperimentazione è la valutazione del comportamento a taglio-compressione della tradizionale muratura messinese (nota in generale per le basse proprietà meccaniche dovute alle caratteristiche della pietra, alla cattiva qualità della malta ed alla mancanza di connessioni trasversali) rinforzata con il sistema CAM (Cucitura Attiva dei Manufatti).

Experimental Tests on Typical Masonry of Messina Area (Italy) Retrofitted with CAM: Full Scale Panels

The present paper focuses on an in-situ testing campaign recently developed in the Messina area, Italy, aiming at the assessment of the in-plane shear behaviour of traditional masonry retrofitted with the innovative CAM system (a system of 3D pre-tensioned stainless steel ties). The typical masonry of Messina area, is characterised by low mechanical properties, both for its texture and for the bad quality of mortar, as well as lack of transverse connections. The high seismic risk characterizing the zone, amplifies the need for in-plane strengthening and transverse connections improving. The CAM system, Masonry Active Ties or Manufact Active Confining, allows to realise a 3D pre-tensioned ty…