Simplified Effective Compressive Strengths of Columns with Intervening Floor Slabs

The current design codes discuss the effective compressive strengths of columns, which reflect a decrease in load transfer performance that can occur when columns and slabs have different concrete compressive strengths. The effective compressive strength of a column increases as it is confined by th...

Full description

Saved in:
Bibliographic Details
Published in:International journal of concrete structures and materials 2020, 14(5), 56, pp.661-671
Main Authors: Choi, Seung-Ho, Hwang, Jin-Ha, Han, Sun-Jin, Cho, Hae-Chang, Kim, Jae Hyun, Kim, Kang Su
Format: Article
Language:English
Subjects:
Axial loads
Building Materials
column
Columns (structural)
Compressive strength
Concrete slabs
Confinement
Copper
effective compressive strength
Engineering
high strength concrete
Load transfer
normal strength concrete
reinforced concrete
slab
Solid Mechanics
Structural Materials
토목공학
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The current design codes discuss the effective compressive strengths of columns, which reflect a decrease in load transfer performance that can occur when columns and slabs have different concrete compressive strengths. The effective compressive strength of a column increases as it is confined by the slab, and the design codes mandate three different effective compressive strengths for interior columns (confinement on four sides), exterior columns (confinement on three sides), and corner columns (confinement on two sides). For both corner and exterior columns, the confinement effect of the slab is significantly smaller than that for the interior column, and there is a more marked decrease in load transfer performance. However, there is still a lack of theoretical studies investigating the effective compressive strengths of the corner and exterior columns. Therefore, based on the analysis model established in previous research, this study has proposed an equation for calculating the effective compressive strengths of the corner, exterior and isolated columns without any confinement effects of the slab. In addition, axial loading tests of isolated columns were conducted and the proposed equation was verified.
ISSN:1976-0485
2234-1315
DOI:10.1186/s40069-020-00419-8