000015724 001__ 15724
000015724 005__ 20161115135327.0
000015724 04107 $$aeng
000015724 046__ $$k2013-06-12
000015724 100__ $$aPenna, A.
000015724 24500 $$aA Macro-Element Model for the Nonlinear Analysis of Masonry Members Including Second Order Effects

000015724 24630 $$n34.$$pComputational Methods in Structural Dynamics and Earhquake Engineering
000015724 260__ $$bNational Technical University of Athens, 2013
000015724 506__ $$arestricted
000015724 520__ $$2eng$$aThe second order effects are often neglected in the evaluation of the global seismic response of masonry buildings. Pier in-plane response is often governed by shear failure modes, particularly in case of rather squat panels and relatively high compression. Shear failure is usually associated with a limited deformation capacity which makes acceptable an approach based on the undeformed geometry of the structure. In case of structural members with a prevailing bending behaviour, the displacement capacity can be significantly increased and second order effects may no longer be negligible. Indeed, experimental tests on panels with a marked rocking behaviour show a gradual reduction of lateral strength for increasing lateral displacements, also in the absence of significant toe-crushing effects. The 2-node macro-element model implemented in the TREMURI computer program concentrates in the two extremities the coupled axial and flexural behaviour allowing for a rigorous representation of flexural cracking and toe-crushing effects. The shear response is concentrated in the central body of the element and the interaction between shear and bending-rocking behaviours is allowed by two internal degrees of freedom. The kinematic formulation of the macroelement and in particular the presence of the additional internal degrees of freedom easily allowed the introduction of P-delta effects in the nonlinear element response. Numerical results obtained with the upgraded macro-element model showed a very good agreement with experimental results. The new feature implemented in the macro-element model makes its use in the equivalent frame modelling further reliable and opens new perspectives and applications in other fields such as the analysis of rigid or quasi-rigid block systems.

000015724 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000015724 653__ $$aMasonry, Second order effects, Nonlinear analysis, Rocking, Simulation.

000015724 7112_ $$aCOMPDYN 2013 - 4th International Thematic Conference$$cIsland of Kos (GR)$$d2013-06-12 / 2013-06-14$$gCOMPDYN2013
000015724 720__ $$aPenna, A.$$iGalasco, A.
000015724 8560_ $$ffischerc@itam.cas.cz
000015724 8564_ $$s878280$$uhttps://invenio.itam.cas.cz/record/15724/files/1331.pdf$$yOriginal version of the author's contribution as presented on CD, section: CD-RS 12 MASONRY STRUCTURES
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000015724 962__ $$r15525
000015724 980__ $$aPAPER