Shear and Flexural Behavior of RC Columns with Rectangular Hollow Cross-Sections Under Cyclic Loading
Kiwoong Jin, Ho Choi, Chunri Quan
TL;DR
This study examines how reinforced concrete columns with hollow rectangular shapes behave during earthquakes, finding they can perform well if designed properly.
Contribution
The study introduces insights into the seismic performance of hollow RC columns, showing minimal impact on flexural strength and improved shear estimation methods.
Findings
Flexure-dominated hollow RC columns showed stable seismic performance even with reduced shear span ratios.
Hollow cross-sections had minimal effect on flexural strength and bar strain distribution.
Using an equivalent cross-sectional area improved shear strength estimation accuracy.
Abstract
This study investigates the seismic behavior of reinforced concrete (RC) columns with hollow rectangular cross-sections through experimental testing and analytical evaluation. A series of hollow-sectioned column specimens with different shear span ratios and failure modes were tested under cyclic lateral loading to examine their flexural and shear performance. The results demonstrated that flexure-dominated columns exhibited stable load-deformation responses and sustained seismic performance, even with the reduced shear span ratio. The experimental results also showed that the presence of the hollow cross-section had minimal influence on flexural strength and bar strain distribution. The shear strength of RC columns with hollow cross-sections tended to be underestimated by the conventional equation; however, improved accuracy was achieved by applying an equivalent cross-sectional area…
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Taxonomy
TopicsStructural Behavior of Reinforced Concrete · Seismic Performance and Analysis · Structural Load-Bearing Analysis