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http://dx.doi.org/10.11112/jksmi.2010.14.1.133

Influence of Anchorage of T-Plate on the Seismic Performance of RC Columns Strengthened with Unbounded Wire Rope Units  

Sim, Jae-Il (목포대학교 건축공학)
Yang, Keun-Hyeok (목포대학교 건축공학)
Publication Information
Journal of the Korea institute for structural maintenance and inspection / v.14, no.1, 2010 , pp. 133-140 More about this Journal
Abstract
Five strengthened columns and an unstrengthened column were tested under constant axial load and cyclic lateral loads to examine the seismic performance of the unbounded strengthening procedure using wire ropes and T-plates. Main variables considered were the presence of mortar cover for strengthening steel element and anchorage method of T-plate. Test results clearly showed that T-plates having a proper anchorage contribute to transfer of applied moment as well as enhancement of ductility of reinforced concrete columns. However, T-plate not anchored fully into a column base can seldom transfer the externally applied moment, though it highly improves the ductility of column. The presence of mortar cover for strengthening steel elements is significantly effective in enhancing the initial stiffness and flexural capacity of the strengthened columns, but has an adversely effect on enhancing the ductility. The ultimate moment strength predicted from the extended section laminae method in better agreement with test results compared with predictions obtained using stress black specified in ACI 318-05.
Keywords
Strengthening; Wire rope; Seismic performance; Column; T-plate; Anchorage;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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