000015694 001__ 15694
000015694 005__ 20161115135327.0
000015694 04107 $$aeng
000015694 046__ $$k2013-06-12
000015694 100__ $$aHak, S.
000015694 24500 $$aLocal Effects in the Seismic Design of RC Frame Structures With Masonry Infills

000015694 24630 $$n34.$$pComputational Methods in Structural Dynamics and Earhquake Engineering
000015694 260__ $$bNational Technical University of Athens, 2013
000015694 506__ $$arestricted
000015694 520__ $$2eng$$aFor the prevention of local effects that may occur on the load-bearing elements of newly designed masonry infilled RC frames, additional measures are foreseen in modern seismic design codes. In particular, European code regulations impose special detailing and confinement requirements for structural elements in RC frames with adherent masonry infills. Moreover, the verification of adjacent columns for increased shear demands is required, estimated based on approximate values of horizontal shear strength of the infill, and through the application of capacity design principles along the contact length. With the aim to verify the efficiency of the current design approach and provide additional recommendations related to local effects due to the presence of masonry infills in RC frames, in this study a series of nonlinear dynamic analyses on typical newly designed building configurations with different masonry infill typologies of varying strength and stiffness properties has been performed at increasing levels of seismicity. The analyses are carried out using a simple numerical model representing the masonry infill as a single diagonal strut. Although such model cannot directly capture the local effects in the contact region, it allows, a posteriori, the calculation of effective shear demands on the columns. For a number of considered prototype buildings, a comparison of effective shear demands obtained from analyses and shear design forces required by the code has been carried out. Furthermore, a simplified procedure for the verification of columns in RC frames exposed to increased shear demands due to the presence of masonry infills as a function of expected inter-storey drift demands has been proposed. Hence, starting from existing code recommendations, the given method allows the evaluation of shear design forces in compliance with effective shear demands, accounting for different masonry infill typologies, the position of the infill along the height of the building and the seismic ground motion intensity.

000015694 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000015694 653__ $$aLocal Effects, RC Frames, Masonry Infills, Shear Design, Nonlinear Analyses.

000015694 7112_ $$aCOMPDYN 2013 - 4th International Thematic Conference$$cIsland of Kos (GR)$$d2013-06-12 / 2013-06-14$$gCOMPDYN2013
000015694 720__ $$aHak, S.$$iMorandi, P.$$iMagenes, G.
000015694 8560_ $$ffischerc@itam.cas.cz
000015694 8564_ $$s653356$$uhttps://invenio.itam.cas.cz/record/15694/files/1270.pdf$$yOriginal version of the author's contribution as presented on CD, section: CD-MS 41 BRICK-INFILLED RC FRAMES: SEISMIC BEHAVIOR AND RETROFIT
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000015694 962__ $$r15525
000015694 980__ $$aPAPER