000011702 001__ 11702
000011702 005__ 20141205155938.0
000011702 04107 $$aeng
000011702 046__ $$k2008-10-12
000011702 100__ $$aSomma, G.
000011702 24500 $$aShear Strength of Fiber Reinforced Concrete Beam-Column Joints under Seismic Loading

000011702 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000011702 260__ $$b
000011702 506__ $$arestricted
000011702 520__ $$2eng$$aExisting reinforced concrete frames constructed before the 1970s and some present buildings are often characterized by an inadequate seismic resistance: beam-column connections in a ductile reinforced concrete frame is a critical region, especially under the action of earthquake loading. These structures were designed for gravity loads and are often inadequately detailed to resist to severe seismic loads. Different methods have been used and studied by several researchers for strengthening and increasing the resistance of reinforced concrete beam-column joints. Among these the use of fiber-reinforced concrete has shown to permit connections to satisfactorily perform under large shear reversals with excellent damage tolerance. In this paper several experimental studies, done by other researchers on beam-column joints both without and with fiber reinforcements, have been taken into account. On the basis of the studies conducted by the author on interior and exterior beam-column joints, it is here proposed a new formula that predicts the shear strength of fiber-reinforced concrete beam-column joints. The shear strength values obtained with this formula have been compared to those derived by the experimental tests. It has been found that the here proposed expression gives an accurate and uniform prediction of the shear resistance, as it properly estimates the tests results.

000011702 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000011702 653__ $$abeam-column joints, fiber, shear, strength

000011702 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000011702 720__ $$aSomma, G.
000011702 8560_ $$ffischerc@itam.cas.cz
000011702 8564_ $$s70773$$uhttps://invenio.itam.cas.cz/record/11702/files/05-03-0129.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: 05-03-0129.
000011702 962__ $$r9324
000011702 980__ $$aPAPER