000018767 001__ 18767
000018767 005__ 20170118182240.0
000018767 04107 $$aeng
000018767 046__ $$k2017-01-09
000018767 100__ $$aSoroushian, Siavash
000018767 24500 $$aComprehensive Finite Element Simulation of the Flexible Wood Diaphragms

000018767 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000018767 260__ $$b
000018767 506__ $$arestricted
000018767 520__ $$2eng$$aUnreinforced masonry (URM) buildings with flexible wood floors and roofs are known as one of the most seismically vulnerable building types in the world. These types of buildings accounts for major portion of the existing buildings in some countries like Mexico, Italy, Indonesia, Australia, and some portions of United States. The horizontal wood diaphragms of these buildings are intended to transfer inertial in-plane lateral forces to the vertical load resisting elements of the building (e.g. URM shear walls). However, failure of connections between the wood diaphragms and masonry walls and also flexibility of the diaphragm itself were identified as the major source of damage in URM buildings during the past earthquakes. In this research, a methodology for the modelling of flexible wood diaphragms is discussed using the LS-DYNA software. For doing so, elastic elements with the corresponding section properties are used to represent joists and planks. Planks are connected to the joists through the nails, which their hysteretic behavior are modeled using the nonlinear discrete beam elements. Methodology presented in this study is validated with the full scale experimental study performed at Texas A&M University. Also, the methodology further validated for various retrofitted scenarios with the experimental data. Finally, the modelling approach is extended to a typical full 3D two-story URM building that contains flexible wood floor and roof. In this building model, the nonlinear 4-node fully-integrated shell elements with previously validated embedded masonry material are used to capture the extent of damage in the URM walls. Also, the effect of retrofit options on the overall seismic performance of the building is investigated. This study aims to propose a novel analysis approach to better understand the behavior of flexible and retrofitted wood floor diaphragms. Also, this research facilitates the necessary analytical tools to study the integrated models of URM buildings with flexible wood floors.

000018767 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000018767 653__ $$aTimber diaphragm; Finite element analysis; Unreinforced masonry

000018767 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000018767 720__ $$aSoroushian, Siavash$$iAvanes, Candice$$iMooneghi, Maryam Asghari$$iMasroor, Armin$$iSmith, Rob
000018767 8560_ $$ffischerc@itam.cas.cz
000018767 8564_ $$s613963$$uhttps://invenio.itam.cas.cz/record/18767/files/2199.pdf$$yOriginal version of the author's contribution as presented on USB, paper 2199.
000018767 962__ $$r16048
000018767 980__ $$aPAPER