000019232 001__ 19232
000019232 005__ 20170118182305.0
000019232 04107 $$aeng
000019232 046__ $$k2017-01-09
000019232 100__ $$aPampanin, Stefano
000019232 24500 $$aPost-Seismic Capacity of Damaged and Repaired Reinforced Concrete Plastic Hinges Extracted From a Real Building

000019232 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000019232 260__ $$b
000019232 506__ $$arestricted
000019232 520__ $$2eng$$aThis paper presents preliminary results of an experimental campaign on three beam-column joint subassemblies extracted from a 22-storey reinforced concrete frame building constructed in late 1980s at the Christchurch’s Central Business District (CBD) area, damaged and demolished after the 2010-2011 Canterbury earthquakes sequence (CES). The building was designed following capacity design principles. Column sway (i.e., soft storey) mechanisms were avoided, and the beams were provided with plastic hinge relocation details at both beam-ends, aiming at developing plastic hinges away from the column faces. The specimens were tested under quasi-static cyclic displacement controlled lateral loading. One of the specimens, showing no visible residual cracks was cyclically tested in its as-is condition. The other two specimens which showed residual cracks varying between hairline and 1.0mm in width, were subjected to cyclic loading to simulate cracking patterns consistent with what can be considered moderate damage. The cracked specimens were then repaired with an epoxy injection technique and subsequently retested until reaching failure. The epoxy injection techniques demonstrated to be quite efficient in partly, although not fully, restoring the energy dissipation capacities of the damaged specimens at all beam rotation levels. The stiffness was partly restored within the elastic range and almost fully restored after the onset of nonlinear behaviour.

000019232 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000019232 653__ $$abeam-column joints, plastic hinge relocation detail, residual capacity, epoxy injection repair.

000019232 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000019232 720__ $$aPampanin, Stefano$$iCuevas, Alberto
000019232 8560_ $$ffischerc@itam.cas.cz
000019232 8564_ $$s2142811$$uhttps://invenio.itam.cas.cz/record/19232/files/3142.pdf$$yOriginal version of the author's contribution as presented on USB, paper 3142.
000019232 962__ $$r16048
000019232 980__ $$aPAPER