000021899 001__ 21899
000021899 005__ 20170622131310.0
000021899 04107 $$aeng
000021899 046__ $$k2017-06-15
000021899 100__ $$aChrysanidis, Theodoros
000021899 24500 $$aANALYTICAL AND EXPERIMENTAL RESEARCH ON IMPROVEMENT OF THE DUCTILITY OF BUILDINGS’ R/C SEISMIC WALLS THROUGH SLIP PREVENTION WITH THE USE OF STOPPERS

000021899 24630 $$n6.$$pComputational Methods in Structural Dynamics and Earhquake Engineering
000021899 260__ $$bNational Technical University of Athens, 2017
000021899 506__ $$arestricted
000021899 520__ $$2eng$$aSeveral researchers propose placing diagonal reinforcing bars at the base of the wall to treat the shear slip, while others have suggested various ways to address this problem associated with the halting of the effects incurred by the through-crack in the base of the wall during recycling of loading. An indicative proposal of the bibliography is using large diameter reinforcement bars in the web of the wall as vertical reinforcements, so that through the dowel action of these bars to be able to better control the shear action. The two aforementioned proposals, while adequately address the phenomenon of shear slip, present significant disadvantages: The use of diagonal reinforcement is very difficult to be constructed, because of the density of existing reinforcement in the base of the walls, which involves compromising good concrete condensation. Also, the use of large diameter vertical reinforcement along the length of the whole wall section, including its web, leads to a strongly uneconomical solution. This works examines a solution without the aforementioned side effects. Innovation of the present work is the fact that it positions stoppers in combination with the use of conventional reinforcing bars at positions of the critical zones of the walls, in order to further prevent the expected slip along the through-crack in the base of the rigidly supported wall. The work is mainly experimental and includes investigation of the seismic mechanical properties of a wall specimen with conventional reinforcement according to EC8. This study presents the investigation on the effect of the shear span as resistance parameter, on the design of concrete interfaces. In the first part of the study the shear transfer between concrete interfaces, in which the value of the shear span is equal to zero, is investigated. The experimental investigation is extended to include values of the shear span greater than zero. These values are usually observed at bridge seismic stoppers. The experimental results presented in this study are used to derive an analytical expression of the resistance of bridge seismic stoppers.

000021899 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000021899 653__ $$aWalls, Ductility, Stoppers, Slip, Buildings.

000021899 7112_ $$aCOMPDYN 2017 - 6th International Thematic Conference$$cRhodes Island (GR)$$d2017-06-15 / 2017-06-17$$gCOMPDYN2017
000021899 720__ $$aChrysanidis, Theodoros$$iSpyridonidou, Sofia$$iTegos, Ioannis$$iTegou, Sevasti
000021899 8560_ $$ffischerc@itam.cas.cz
000021899 8564_ $$s1192424$$uhttps://invenio.itam.cas.cz/record/21899/files/18266.pdf$$yOriginal version of the author's contribution as presented on CD, section: [MS02] Experimental measurements and numerical simulation on problems in the field of Earthquake
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000021899 962__ $$r21500
000021899 980__ $$aPAPER