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http://dx.doi.org/10.11112/jksmi.2022.26.6.102

Experimental Study on the Failure Behavior of RC Octagonal Hollow Section Columns with Aspect Ratio of 4.0 and Longitudinal Steel Ratio of 2.36 ~ 4.71%  

Ko, Seong-Hyun (Research Center of Urban Safety.Civil Engineering Technology, Jeju International University)
Publication Information
Journal of the Korea institute for structural maintenance and inspection / v.26, no.6, 2022 , pp. 102-111 More about this Journal
Abstract
The aim of this study is to assess the seismic performance of octagonal hollow cross section reinforced concrete bridge pier, and to investigate the effect of longitudinal reinforcement ratios on the failure behavior. Four octagonal hollow section RC bridge columns of small scale model were tested under a quasi-static cyclically reversed horizontal load with constant axial load. The volumetric ratio of transverse spiral hoop of all specimens was maintained constant(0.206%), the ratios of longitudinal reinforcement were varied(2.36 ~ 4.71%). Failure behavior and seismic performance were investigated. Three specimens with the exception of lap spliced specimen showed flexure-shear failure at final stage. The test results with the exception of lap spliced specimen showed that the displacement ductility factor and accumulated energy dissipation decreased in inverse proportion to the ratio of longitudinal steel.
Keywords
Bridge column; Octagonal hollow cross section; Longitudinal reinforcement ratio; Flexure-shear failure; Failure behavior;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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