000010010 001__ 10010
000010010 005__ 20141205154138.0
000010010 04107 $$aeng
000010010 046__ $$k2008-10-12
000010010 100__ $$aFujinaga, T.
000010010 24500 $$aBehavior of Square Concrete-Filled Tubular Columns under Eccentric Compression with Double Curvature Deflection

000010010 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000010010 260__ $$b
000010010 506__ $$arestricted
000010010 520__ $$2eng$$aObjective of this paper is to present experimental information about the behavior of square CFT columns subjected to eccentric compression with double curvature deformation, to investigate validity of the current design formula for slender CFT columns, meanwhile to study its applicability to the middle-length columns. Forty-three square CFT columns were fabricated and tested. The experimental variables among the tests are, 1) the buckling length to depth ratio of the column, 2) the concrete strength, 3) the moment gradient which deforms the column into double curvature, and 4) the eccentricity of the axial load. Experimental results have indicated that the flexural strength of slender square CFT columns increases with the concrete strength and the moment gradient. Comparison between the test results and the theoretical ones predicted by the current design code has shown that for the slender square CFT columns with the buckling length to depth ratio of 20, the current design formula could satisfactorily well predict the flexural strength in spite of the degree of moment gradient. For the middle-length square CFT columns with the buckling length to depth ratio of 10, however, the current design formula overestimates the flexural strength when the column was under eccentric compression without moment gradient, i.e. under pure bending. On the other hand, for the middle-length columns under eccentric compression with moment gradient, the current design formula could be applied to evaluate their flexural strength with satisfactory accuracy.

000010010 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000010010 653__ $$aConcrete-filled tubular column, Slenderness ratio, Double curvature deformation, Eccentric compression, Square column

000010010 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000010010 720__ $$aFujinaga, T.$$iDoi, H.$$iSun, Y.P.
000010010 8560_ $$ffischerc@itam.cas.cz
000010010 8564_ $$s363952$$uhttps://invenio.itam.cas.cz/record/10010/files/05-06-0033.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: 05-06-0033.
000010010 962__ $$r9324
000010010 980__ $$aPAPER