000010029 001__ 10029
000010029 005__ 20141205154139.0
000010029 04107 $$aeng
000010029 046__ $$k2008-10-12
000010029 100__ $$aGalal, K.
000010029 24500 $$aAnalytical Study on Upgrading the Seismic Performance of Nominally Ductile RC Frame Structures Using Different Rehabilitation Techniques

000010029 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000010029 260__ $$b
000010029 506__ $$arestricted
000010029 520__ $$2eng$$aRetrofitting or strengthening of existing reinforced concrete (RC) frame structures is one of the important obsessions for many researchers. Most of these structures were designed according to pre1970 strength-based codes; these codes did not consider the ductility of the structure as a main parameter to dissipate the earthquake energy. And hence these buildings are susceptible to abrupt a non-ductile strength deterioration once their ultimate capacity is reached. Such a brittle failure will lead to a reduction in the energy dissipation capacity of the building and hence the seismic resistance of the structure. Therefore, upgrading the seismic performance of such structures becomes essential to minimize the disastrous consequences of earthquakes. Several rehabilitation techniques can be used to enhance the seismic resistance of structures. This paper investigates analytically the effectiveness of four different rehabilitation techniques that can be used for enhancing the seismic performance of existing nominally ductile RC frame structures. The studied rehabilitation techniques include (1) introducing a RC structural wall, (2) using steel X-bracings (3) using diagonal fibre reinforced polymer strips (FRP bracings), and (4) wrapping or partially wrapping the frame members (columns and beams) using FRP composites. 5- and 15-storey existing frame models were studied representing low- and high-rise frames. The cases of bare frame and masonry-infilled frame were also considered. The existing frames were rehabilitated and subjected to three types of ground motion records with different frequency contents. The seismic performance of the existing and rehabilitated frames was evaluated in terms of the maximum applied peak ground acceleration resisted by the frames, maximum inter-storey drift ratio, maximum storey shear-to-weight ratio and energy dissipation capacity.

000010029 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000010029 653__ $$aReinforced concrete, rehabilitation, frames, seismic performance, nonlinear dynamic analysis.

000010029 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000010029 720__ $$aGalal, K.$$iEl-Sokkary, H.
000010029 8560_ $$ffischerc@itam.cas.cz
000010029 8564_ $$s432574$$uhttps://invenio.itam.cas.cz/record/10029/files/05-03-0087.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: 05-03-0087.
000010029 962__ $$r9324
000010029 980__ $$aPAPER