000018612 001__ 18612
000018612 005__ 20170118182230.0
000018612 04107 $$aeng
000018612 046__ $$k2017-01-09
000018612 100__ $$aShim, Changsu
000018612 24500 $$aCyclic Behavior of Repaired Earthquake-Damaged Post-Tensioned Precast Columns

000018612 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000018612 260__ $$b
000018612 506__ $$arestricted
000018612 520__ $$2eng$$aPost-tensioned precast concrete columns are known to have re-centering capability for seismic actions. This paper presents cyclic behavior of repaired precast concrete columns which experienced lateral movement up to drift level of 8%. The damage by the lateral load was repaired by removing cover concrete and thickening by high performance fiber reinforced cementitious composite. Strengthening part had additional details of chemical anchors into the foundation. Additionally provided transverse reinforcing bars in the thickened concrete showed significant effect on failure mode. When the posttensioned precast columns do not have tendon fracture by lateral load, the proposed strengthening method enhanced structural performance in terms of maximum strength, deformation capacity and energy dissipation capacity. The repaired columns showed more than 30% increase of flexural strength and 1.45 times higher cumulative energy dissipation capacity than the original precast columns. Design recommendations are summarized using the experimental results.

000018612 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000018612 653__ $$apost-tension, precast concrete column, high performance fiber reinforced cementitious composite, cyclic behavior, repair

000018612 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000018612 720__ $$aShim, Changsu$$iSong, Hyunhae$$iPark, Seongjun
000018612 8560_ $$ffischerc@itam.cas.cz
000018612 8564_ $$s515224$$uhttps://invenio.itam.cas.cz/record/18612/files/184.pdf$$yOriginal version of the author's contribution as presented on USB, paper 184.
000018612 962__ $$r16048
000018612 980__ $$aPAPER