000015921 001__ 15921
000015921 005__ 20161115135333.0
000015921 04107 $$aeng
000015921 046__ $$k2013-06-12
000015921 100__ $$aSpyrakos, C.
000015921 24500 $$aValidation of Analytical Models for the Assessment  of Brick-Infilled RC Frames Strengthened With Frps

000015921 24630 $$n34.$$pComputational Methods in Structural Dynamics and Earhquake Engineering
000015921 260__ $$bNational Technical University of Athens, 2013
000015921 506__ $$arestricted
000015921 520__ $$2eng$$aNumerous modern seismic codes including Eurocode 8 provide rules to avoid possible adverse impact of the presence of masonry infills in concrete buildings or unbraced steel or composite structures. These adverse effects include damage of columns in contact with strong infills, reduction of the clear column height because of partial contact with masonry along height, planwise and heightwise irregularity. However, codes emphasize on the design of new structures, while little information is provided on modeling of masonry infills. Conversely, when the seismic upgrading of existing structures is performed with those methods that have received wider application in engineering practice, i.e., strengthening of columns and beams with reinforced concrete (RC) jackets or Fiber Reinforced Polymers (FRPs), construction of additional RC shear walls and construction of diagonal steel elements, any beneficial effect of masonry infills is usually ignored. The present research examines the effectiveness of strengthening existing RC frames with the application of FRP sheets on their brick-infill walls. This recently proposed method uses the advantageous mechanical properties of FRPs and is characterized by relatively low cost and ease of implementation compared to other aforementioned available retrofit schemes. A multi-strut masonry panel element is used to simulate the nonlinear response of the infill wall, while the FRP contribution to the response is modeled with a tension tie. Experimental results available in the literature for a scaled reinforced concrete frame are used to calibrate the parameters of the numerical model. Comparisons are made between the analytically and the experimentally derived results, and the effectiveness of the retrofit scheme is assessed. Also a simple method to modify the lateral stiffness of masonry infills to account for the presence of openings is addressed.

000015921 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000015921 653__ $$aBrick-infilled Reinforced Concrete Frames, FRP Composites, Retrofit of Structures.

000015921 7112_ $$aCOMPDYN 2013 - 4th International Thematic Conference$$cIsland of Kos (GR)$$d2013-06-12 / 2013-06-14$$gCOMPDYN2013
000015921 720__ $$aSpyrakos, C.$$iManiatakis, C.$$iPsycharis, I.$$iSmyrou, E.$$iAsteris, P.
000015921 8560_ $$ffischerc@itam.cas.cz
000015921 8564_ $$s446341$$uhttps://invenio.itam.cas.cz/record/15921/files/1704.pdf$$yOriginal version of the author's contribution as presented on CD, section: CD-MS 41 BRICK-INFILLED RC FRAMES: SEISMIC BEHAVIOR AND RETROFIT
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000015921 962__ $$r15525
000015921 980__ $$aPAPER