000011426 001__ 11426
000011426 005__ 20141205155909.0
000011426 04107 $$aeng
000011426 046__ $$k2008-10-12
000011426 100__ $$aReisi, Mohammad
000011426 24500 $$aM-P Curves for Strengthened Concrete Columns with Active Confinement

000011426 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000011426 260__ $$b
000011426 506__ $$arestricted
000011426 520__ $$2eng$$aMany existing reinforced concrete buildings suffer from lack of strength and ductility against lateral loads, especially earthquake load, due to design style based on old codes. Such buildings should be strengthened and retrofitted to comply with new loading and design requirements. Confinement of concrete is an effective and commonly used method in strengthening of columns. Confining of concrete increases compressive strength of concrete and enhances the ductility. Passive and active confinements are two methods for confining of concrete. In this study, effect of active confinement on axial and bending capacity of strengthened concrete columns using steel angle profiles is investigated and M-P curves are illustrated. Stress-strain curve of confined concrete is obtained using Drucker-Pruger model of ANSYS. This curve is modified to a parabolic curve; then is used for determination of bending moment-axial load (M-P) diagrams of aforementioned strengthened concrete columns. The diagrams are drawn for specific square columns with different reinforcement ratios and different compressive strength of concrete. These diagrams highlight the effectiveness of the method used for achievement of confinement of concrete columns.

000011426 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000011426 653__ $$aReinforced concrete structures, Active confinement, M-P curves.

000011426 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000011426 720__ $$aReisi, Mohammad$$iMostofinejad, Davood$$iAzizi, Nima
000011426 8560_ $$ffischerc@itam.cas.cz
000011426 8564_ $$s243743$$uhttps://invenio.itam.cas.cz/record/11426/files/S09-007.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: S09-007.
000011426 962__ $$r9324
000011426 980__ $$aPAPER