000011456 001__ 11456
000011456 005__ 20141205155912.0
000011456 04107 $$aeng
000011456 046__ $$k2008-10-12
000011456 100__ $$aRoh, Hwasung
000011456 24500 $$aDynamic Response of Weakened Structures Using Rocking Columns

000011456 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000011456 260__ $$b
000011456 506__ $$arestricted
000011456 520__ $$2eng$$aAcceleration response of simple yielding structures is proportional to its structural strength. Therefore, in order to reduce accelerations, to protect structural elements and acceleration-sensitive nonstructural components in inelastic structures, the overall strength of the structure should be decreased. The use of “rocking columns”, a type of double hinged gravity column, is suggested to reduce the strength of part of the lateral load resisting system (weaken the structure) for controlling the story accelerations. A simplified model of the rocking column, verified through experimental tests, was implemented into a nonlinear dynamic analysis platform IDARC2D. A numerical study is conducted to demonstrate that story acceleration responses can be reduced compared to conventional structures. An analytical model of a 1/3 scaled model structure which was tested at University at Buffalo in 1992 is used to evaluate the behavior of several weakening alternatives. The analytical results show that rocking columns are an effective means of weakening the structure to reduce story accelerations. However, such columns have both non-negligible stiffness and strength prior to rocking, which in turn affects both the local and global behavior of the structure.

000011456 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000011456 653__ $$aRocking columns, Quasi-static cyclic test, Simplified model, Nonlinear elastic-cyclic model, Controlled-weakened structures, Nonlinear dynamic analysis

000011456 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000011456 720__ $$aRoh, Hwasung$$iReinhorn, Andrei M.
000011456 8560_ $$ffischerc@itam.cas.cz
000011456 8564_ $$s568668$$uhttps://invenio.itam.cas.cz/record/11456/files/05-01-0021.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: 05-01-0021.
000011456 962__ $$r9324
000011456 980__ $$aPAPER