000011580 001__ 11580 000011580 005__ 20141205155925.0 000011580 04107 $$aeng 000011580 046__ $$k2008-10-12 000011580 100__ $$aSeki, Matsutaro 000011580 24500 $$aCyclic Shear Tests on Plain and FRP Retrofitted Masonry Walls 000011580 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering 000011580 260__ $$b 000011580 506__ $$arestricted 000011580 520__ $$2eng$$aRetrofitting of existing vulnerable buildings in seismic areas represents a high priority for the structural engineer community worldwide. In Romania the issue of seismic rehabilitation is focused on some vulnerable buildings typologies such as high rise gravity designed RC structures and plain masonry structures. Given the seismic risk of Romania and the large vulnerable building stock, JICA Technical Cooperation Project on the Reduction of Seismic Risk in Romania was implemented since 2002 by National Center for Seismic Risk Reduction. Many building collapses in 1940 and 1977 Vrancea earthquakes were triggered by the shear failure of the masonry walls. These walls were not designed and detailed to withstand the shear force due to lateral seismic loading. The seismic evaluation and retrofitting of masonry walls is tributary to available and accurate input data. These data are made available solely by structural experimental tests. The employment of worldwide available experimental data is misleading because of scattered materials characteristics and construction practice. To implement accurate and appropriate retrofitting solutions it is necessary to conduct tests following local state of the practice. The paper describes a series of four masonry walls specimens subjected to cyclic shear test. Two of the specimens represent the existing plain masonry walls and the other two FRP retrofitted ones. One of retrofitted specimens is enforced using one layer of FRP sheet applied on both sides and the other one by using two layers applied on one side. 000011580 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb. 000011580 653__ $$aMasonry, shear, retrofitting, FRP 000011580 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15 000011580 720__ $$aSeki, Matsutaro$$iVacareanu, Radu S.$$iSaito, T$$iCotofana, Dragos C.$$iLozinca, E.$$iPopa, Viorel$$iChesca, Basarab 000011580 8560_ $$ffischerc@itam.cas.cz 000011580 8564_ $$s980169$$uhttps://invenio.itam.cas.cz/record/11580/files/12-01-0068.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: 12-01-0068. 000011580 962__ $$r9324 000011580 980__ $$aPAPER