000009743 001__ 9743
000009743 005__ 20141205153149.0
000009743 04107 $$aeng
000009743 046__ $$k2008-10-12
000009743 100__ $$aChou, Chung-Che
000009743 24500 $$aColumn Restraining Effects in Post-Tensioned Self-Centering Moment Frames

000009743 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000009743 260__ $$b
000009743 506__ $$arestricted
000009743 520__ $$2eng$$aCyclic tests on post-tensioned (PT) connections have demonstrated self-centering capabilities with gap opening, closing at the beam-to-column interface. When the gap opens at the beam-to-column interface in a real frame with more than one column, this gap opening is constrained by the columns. The columns provide flexural restraint to the beams, leading to the compression force different from the strand force in the beams. This study presents a methodology to evaluate the bending stiffness of the columns and the compression force in the beams by deforming a building-height column in accordance with gap opening responses at all connection levels. The predicted compression force in the beams is validated by a detailed 3-story PT frame analytical model and cyclic tests of a full-scale, two-bay by first-story PT frame. The proposed model shows that the beam compression force is increased at the 1st story but decreased at the 2nd and 3rd stories due to deformation compatibility of the whole column. The PT frame tests demonstrate that the proposed model reasonably predicts the beam compression force and strand force, and that the beam compression force at a 3% drift is 2% and 60% larger than the strand force with respective to a little restraint and pin-supported column boundary condition.

000009743 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000009743 653__ $$aPost-tensioned Frame, Steel Beam, Column Restraint, Cyclic Frame Test

000009743 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000009743 720__ $$aChou, Chung-Che$$iChen, Jun-Hen
000009743 8560_ $$ffischerc@itam.cas.cz
000009743 8564_ $$s477249$$uhttps://invenio.itam.cas.cz/record/9743/files/12-01-0150.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: 12-01-0150.
000009743 962__ $$r9324
000009743 980__ $$aPAPER