000012037 001__ 12037
000012037 005__ 20141205160013.0
000012037 04107 $$aeng
000012037 046__ $$k2008-10-12
000012037 100__ $$aWang, Tao
000012037 24500 $$aStrengthening of Weak Story Moment Frames Using a Rocking System with Tendons

000012037 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000012037 260__ $$b
000012037 506__ $$arestricted
000012037 520__ $$2eng$$aThis paper proposes a rocking system to limit the residual deformation of moment-resisting frames in order to improve the immediate occupancy performance and reduce the rehabilitation cost. The system consists of a rocking column and a set of tendons to provide the existing frame with extra stiffness in the entire range of deformation, which provides the existing frame a re-centering capability and a limited level of residual deformation. In this study, a parametric study is conducted with a series of time-history analyses. The stiffness of the rocking column and the stiffness and position of the tendons are taken as the major parameters. It is observed that the rocking column, with a stiffness of about 1.0 times that of the weak story, and the tendons attached at the roof, with a stiffness of 0.05 times that of the weak story, are able to provide the optimal performance with a maximum residual story drift angle of 0.5%, the practical tolerance for occupancy. In the implemented substructure online hybrid test, the existing frame is to be simulated numerically and the rocking system tested physically. The experimental results show that the maximum residual story drift angle never exceeds 0.5%, demonstrating the feasibility of the proposed rocking system.

000012037 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000012037 653__ $$aRocking system, Re-centering, Residual deformation, Weak story

000012037 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000012037 720__ $$aWang, Tao$$iAburano, Hiroshi$$iMatsuoka, Yuichi$$iHitaka, Toko$$iNakashima, Masayoshi
000012037 8560_ $$ffischerc@itam.cas.cz
000012037 8564_ $$s401687$$uhttps://invenio.itam.cas.cz/record/12037/files/11-0027.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: 11-0027.
000012037 962__ $$r9324
000012037 980__ $$aPAPER