000011272 001__ 11272
000011272 005__ 20141205155854.0
000011272 04107 $$aeng
000011272 046__ $$k2008-10-12
000011272 100__ $$aPalermo, A.
000011272 24500 $$aAnalysis and Simplified Design of Precast Jointed Ductile Connections

000011272 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000011272 260__ $$b
000011272 506__ $$arestricted
000011272 520__ $$2eng$$aThis paper describes simplified design tools for precast concrete hybrid system/connections developed during the PRESSS (PREcast Seismic Structural Systems) project, where unbonded post-tensioned tendons/bars are adequately combined with longitudinal mild steel or supplemental damping devices. In order to design the hybrid connections, which are subjected to a controlled rocking motion under an earthquake excitation, a section analysis procedure to evaluate the moment-rotation behaviour of the connection has been proposed in literature by the authors, and validated through a series of experimental tests. In this contribution, a parametric analysis on different section profiles is carried out in order to investigate the principal parameters affecting the moment-rotation capacity of hybrid sections. Either structural parameters, i.e. unbonded length of cables/tendons, mild steel, element length and section parameters, i.e. mechanical ratios of unbonded cables/tendons, mild steel, axial ratio have been considered in the parametric studies. On the basis of these results design charts to be used within a simplified design procedure have been developed. Furthermore an approximate closed-form solution for rectangular sections with lumped mild steel reinforcement has been derived and proposed. The two section analysis approaches are then implemented and compared within a worked example of a hybrid structural connection, designed according to a direct displacement-based approach.

000011272 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000011272 653__ $$aPrecast concrete, hybrid connections, unbonded post-tensioning, design charts.

000011272 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000011272 720__ $$aPalermo, A.$$iPampanin, S.
000011272 8560_ $$ffischerc@itam.cas.cz
000011272 8564_ $$s430520$$uhttps://invenio.itam.cas.cz/record/11272/files/05-06-0048.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: 05-06-0048.
000011272 962__ $$r9324
000011272 980__ $$aPAPER