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http://dx.doi.org/10.5000/EESK.2015.19.6.283

Seismic Behavior of RC Beam-Column Exterior Joints with Unbonded Tendons and High Strength Concrete  

Kwon, Byung Un (Department of Architecture & Architectural Engineering, Seoul National University)
Kang, Thomas H.-K. (Department of Architecture & Architectural Engineering, Seoul National University)
Publication Information
Journal of the Earthquake Engineering Society of Korea / v.19, no.6, 2015 , pp. 283-292 More about this Journal
Abstract
In the moment frame subjected to earthquake loads, beam-column joint is structurally important for ductile behavior of a system. ACI Committee 352 proposed guidelines for designing beam-column joint details. The guidelines, however, need to be updated because of the lack of data regarding several factors that may improve the performance of joints. The purpose of this study is to investigate the seismic performance of reinforced concrete exterior joints with high-strength materials and unbonded tendons. Three specimens with different joint shear demand-to-strength ratios were constructed and tested, where headed bars were used to anchor the beam bars into the joint. All specimens showed satisfactory seismic behavior including moment strength of 1.3 times the nominal moment, ductile performance (ductility factor = at least 2.4), and sufficiently large dissipated energy.
Keywords
Beam-column exterior joint; Seismic behavior; Headed bars; High strength concrete; Unbonded tendons;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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