000018777 001__ 18777
000018777 005__ 20170118182240.0
000018777 04107 $$aeng
000018777 046__ $$k2017-01-09
000018777 100__ $$aHassan, Wael
000018777 24500 $$aSeismic Performance of Flexural Controlled Src Composite Columns in Existing Buildings

000018777 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000018777 260__ $$b
000018777 506__ $$arestricted
000018777 520__ $$2eng$$aThis paper addresses experimentally the cyclic performance of older-type steel reinforced concrete (SRC) columns that resemble existing buildings and bridges of pre 1980s construction; prior to enforcing seismic details. Two flexural controlled test specimens representing exterior columns modeled based on a typical seismic design of a 20-story prototype gravity-designed existing building are constructed and tested under quasi-static cyclic loading with different axial compression load levels. The tested columns include non-seismic widely spaced hoops with 90 degree hooks; thus the columns are considered flexure and confinement deficient. Test parameters include target failure mode and axial load ratio. The tests aim to quantify existing SRC columns seismic strength and deformability along with a preliminary attempt to establish backbone curve recommendations. From performance-based engineering demand viewpoint, the results show very satisfactory drift capacity associated with low axial load ratio indicating no need for retrofit and limited drift capacity and early strength loss and stiffness degradation under high axial load ratio suggesting the need for retrofitting existing SRC flexural columns with high axial loads.

000018777 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000018777 653__ $$aSRC columns; composite; seismic assessment; existing buildings; non-ductile concrete.

000018777 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000018777 720__ $$aHassan, Wael$$iFarag, Mayer
000018777 8560_ $$ffischerc@itam.cas.cz
000018777 8564_ $$s1131141$$uhttps://invenio.itam.cas.cz/record/18777/files/2214.pdf$$yOriginal version of the author's contribution as presented on USB, paper 2214.
000018777 962__ $$r16048
000018777 980__ $$aPAPER