000020065 001__ 20065
000020065 005__ 20170118182353.0
000020065 04107 $$aeng
000020065 046__ $$k2017-01-09
000020065 100__ $$aCrisafulli, Francisco
000020065 24500 $$aComputational Implementation of An Improved Masonry Panel Element

000020065 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000020065 260__ $$b
000020065 506__ $$arestricted
000020065 520__ $$2eng$$aThe analysis of confined masonry and infilled frames structures is very complex and highly nonlinear due to the interaction between the masonry panel and the surrounding reinforced concrete frame. The equivalent strut model can be used to represent, in a very simplified approach, the effect of the masonry wall. This model may properly represent the global stiffness and resistance of the structure but it is not able to capture local effects, such as the flexural and shear demands in the columns of the frame. On the other hand, refined finite elements models can represent in detail all aspects of the nonlinear response, but they require a high computational cost and their application to large structure can be difficult. This paper presents a macro-model in the form of a twelve-node panel element, which internally includes six diagonal struts. The proper adjustment of the mechanical properties of the struts allows representing the global behavior of the structure and the local effects induced in the different elements of the model. In this way, different type of failure in the masonry panel and in the frame can be considered, such as the horizontal sliding failure of the masonry or the premature shear failure in the columns. In order to facilitate the practical application of the new panel element, the model has been implemented in the opensource software OpenSees, including a precise hysteretic strain-stress relationship to represent the nonlinear axial behavior of the masonry struts in term of both stiffness and strength. The numerical results show a good agreement with experimental data available in the literature. The proposed macro-model, due to its capabilities, can be used for the analysis of large structures, such as multi-story buildings. .

000020065 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000020065 653__ $$aMasonry panel, Strut model, Macro-model

000020065 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000020065 720__ $$aCrisafulli, Francisco$$iTorrisi, Gonzalo
000020065 8560_ $$ffischerc@itam.cas.cz
000020065 8564_ $$s754835$$uhttps://invenio.itam.cas.cz/record/20065/files/501.pdf$$yOriginal version of the author's contribution as presented on USB, paper 501.
000020065 962__ $$r16048
000020065 980__ $$aPAPER