000012238 001__ 12238
000012238 005__ 20141205160033.0
000012238 04107 $$aeng
000012238 046__ $$k2008-10-12
000012238 100__ $$aYou, Young-Min
000012238 24500 $$aAn Analytical Model for RC Columns Subjected to Combined Loadings Including Torsion

000012238 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000012238 260__ $$b
000012238 506__ $$arestricted
000012238 520__ $$2eng$$aReinforced concrete (RC) columns can be subjected to torsional moments in addition to flexural, axial and shear forces during earthquake excitations. Therefore, it is essential to develop models to predict their behavior under combined loadings. The objective of this study is to propose a rational model capable of predicting the entire loading history of circular RC columns under combined loading. As an initial step of this study, an analytical model for RC columns subjected to torsion and axial force is developed. The existing rotating-angle softened truss model (RA-STM) was chosen as a basis and it was modified to account for tension-stiffening effect and biaxial constitutive laws of R C in the proposed model. This addition makes it possible to estimate the thickness of shear flow zone. As a result, it is possible to predict the torque-twist curve of circular RC column even after the postpeak behavior. The performance of proposed method is validated with the test results of a half-scale circular RC column under torsion and axial compression. The proposed model can be used as a basis to predict the behavior of circular RC columns under combined loadings including shear and flexure.

000012238 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000012238 653__ $$asoftened truss model, circular column, torsion, shear flow zone, combined loading

000012238 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000012238 720__ $$aYou, Young-Min$$iBelarbi, Abdeldjelil
000012238 8560_ $$ffischerc@itam.cas.cz
000012238 8564_ $$s157504$$uhttps://invenio.itam.cas.cz/record/12238/files/05-01-0299.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: 05-01-0299.
000012238 962__ $$r9324
000012238 980__ $$aPAPER