000020118 001__ 20118
000020118 005__ 20170118182355.0
000020118 04107 $$aeng
000020118 046__ $$k2017-01-09
000020118 100__ $$aShinohara, Yasuji
000020118 24500 $$aEstimation of Anchorage Strength Through Bending Shear Tests on RC Beams With Second-Layer Bars Cut Off

000020118 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000020118 260__ $$b
000020118 506__ $$arestricted
000020118 520__ $$2eng$$aThe amount of reinforcement required in a reinforced concrete building has increased due to the increased demand for highrises and advanced seismic performance. In particular, the amount of reinforcement required at the ends of a beam has increased, and the reinforcement tends to be arranged in multiple stages, where the second-layer reinforcement is frequently cut off at the central part of the beam. However, since there have been few studies on the bond behavior of cut-off longitudinal reinforcements, the bond strength based on the effective bond length is not evaluated appropriately, and it is difficult to design the cut-off reinforcement with a rational anchorage length. Experiments were conducted on the reinforced concrete beam arranged with second-layer bars cut off in order to study the influence of the bond reinforcement on the bond-splitting strength or anchorage behaviors. The longitudinal bars were reinforced with transverse bars having different configurations (separated and closed types) and strengths (σy=295 and 1275 N/mm2). The bond strength of the second-layer bars reinforced by separated-type bars was almost equal to the strength of those reinforced by closed-type bars. Highstrength bond reinforcement increased the bond strength by 30%. The test results also showed that the bond strength of the second-layer cut-off bars was considerably higher than the calculated value based on the AIJ design guidelines. A new reduction coefficient for the second-layer cut-off bars was proposed to reasonably estimate the bond strength for anchorage failure.

000020118 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000020118 653__ $$aBond-splitting behavior, Cut-off bar, Second-layer bar, Bond reinforcement, Reduction coefficient

000020118 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000020118 720__ $$aShinohara, Yasuji
000020118 8560_ $$ffischerc@itam.cas.cz
000020118 8564_ $$s1532988$$uhttps://invenio.itam.cas.cz/record/20118/files/60.pdf$$yOriginal version of the author's contribution as presented on USB, paper 60.
000020118 962__ $$r16048
000020118 980__ $$aPAPER