000021695 001__ 21695
000021695 005__ 20170622131300.0
000021695 04107 $$aeng
000021695 046__ $$k2017-06-15
000021695 100__ $$aDomenico, Mariano Di
000021695 24500 $$aEMPIRICAL UNREINFORCED MASONRY INFILL MACRO-MODEL ACCOUNTING FOR IN-PLANE/OUT-OF-PLANE INTERACTION

000021695 24630 $$n6.$$pComputational Methods in Structural Dynamics and Earhquake Engineering
000021695 260__ $$bNational Technical University of Athens, 2017
000021695 506__ $$arestricted
000021695 520__ $$2eng$$aUnreinforced Masonry (URM) infills are widely used in Reinforced Concrete (RC) structures in Mediterranean countries. URM infills are subjected to the seismic action in their plane, i.e. in the In Plane (IP) direction, and in the Out Of Plane (OOP) direction. The IP displacement demand reduce the OOP capacity and vice-versa: this phenomenon is called IPOOP interaction. A large number of studies has been carried out on the IP behaviour of infills, while their OOP response and the IP-OOP interaction have been less investigated. In this paper, a review of code and literature provisions concerning URM infills OOP behaviour is presented together with a review of the experimental tests carried out to investigate the infills OOP response and the effects of the IP-OOP interaction. An experimental database is collected to assess the effectiveness of literature and code provisions and to propose new empirical formulations both for predicting infills OOP strength, stiffness and displacement capacity and for modelling the effects of IP displacement demand on the OOP behavior and vice versa. A state of art on infills OOP behaviour and IP-OOP interaction modelling is presented. Most of these distributed-plasticity models are not based on experimental evidences and do not allow taking into account the IP and OOP stiffness degradation due to OOP and IP actions, respectively. A lumped-plasticity macro-model based on the proposed empirical formulations and conceived to represent the IP and the OOP behavior taking into account the mutual interaction effects is defined. Part of the proposed modelling strategy is a routine that removes the whole infill panel from the structural model in case of its IP or OOP collapse. The proposed model is used for an example application showing the effects of taking into account or neglecting the IP-OOP interaction phenomena during structural analyses.

000021695 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000021695 653__ $$aURM infill wall, out-of-plane, empirical, database, in-plane/out-of-plane interaction, macro-model.

000021695 7112_ $$aCOMPDYN 2017 - 6th International Thematic Conference$$cRhodes Island (GR)$$d2017-06-15 / 2017-06-17$$gCOMPDYN2017
000021695 720__ $$aDomenico, Mariano Di$$iVerderame, Gerardo M.$$iRicci, Paolo
000021695 8560_ $$ffischerc@itam.cas.cz
000021695 8564_ $$s1041681$$uhttps://invenio.itam.cas.cz/record/21695/files/17533.pdf$$yOriginal version of the author's contribution as presented on CD, section: [MS18] Modeling the Nonlinear Behavior of Structures
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000021695 962__ $$r21500
000021695 980__ $$aPAPER