Numerical Investigation on Load-carrying Capacity of High-strength Concrete-encased Steel Angle Columns
Abstract To investigate the load-carrying capacity of high-strength concrete-encased steel angle (CES-A) columns, in which corner steel angles are encased in concrete and transmit column loads directly, a numerical study was performed by using a proposed analysis model. The proposed model considered...
Main Authors: | , |
---|---|
Format: | Article |
Language: | English |
Published: |
SpringerOpen
2018-01-01
|
Series: | International Journal of Concrete Structures and Materials |
Subjects: | |
Online Access: | http://link.springer.com/article/10.1186/s40069-018-0238-7 |
id |
doaj-b859b91860e647cc81ac528dd473255d |
---|---|
record_format |
Article |
spelling |
doaj-b859b91860e647cc81ac528dd473255d2020-11-24T23:54:40ZengSpringerOpenInternational Journal of Concrete Structures and Materials1976-04852234-13152018-01-0112111710.1186/s40069-018-0238-7Numerical Investigation on Load-carrying Capacity of High-strength Concrete-encased Steel Angle ColumnsChang-Soo Kim0Hyeon-Jong Hwang1School of Civil Engineering at Shandong Jianzhu University and Shandong Provincial Key Laboratory of Appraisal and Retrofitting in Building StructuresCollege of Civil Engineering at Hunan University and Hunan Provincial Key Laboratory on Damage Diagnosis for Engineering StructuresAbstract To investigate the load-carrying capacity of high-strength concrete-encased steel angle (CES-A) columns, in which corner steel angles are encased in concrete and transmit column loads directly, a numerical study was performed by using a proposed analysis model. The proposed model considered the strain compatibility, confinement effect, local buckling, and premature cover-spalling, and was verified against previous experimental study results. To investigate the effect of design parameters, a parametric study was conducted, and based on the parametric study results, a simple approach was also discussed to predict the residual strength (2nd peak load) after spalling of concrete cover at corners (1st peak load). The numerical investigations showed that when steel contribution and confinement efficiency are high, CES-A columns exhibit relatively large load-carrying capacity even after cover-spalling, due to the maintained strength of confined concrete and yielding of steel angles, and the proposed simple approach gave a good prediction for the residual strength.http://link.springer.com/article/10.1186/s40069-018-0238-7composite columnconcrete-encased steel anglehigh-strength steelconfinementlocal-bucklingcover-spalling |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Chang-Soo Kim Hyeon-Jong Hwang |
spellingShingle |
Chang-Soo Kim Hyeon-Jong Hwang Numerical Investigation on Load-carrying Capacity of High-strength Concrete-encased Steel Angle Columns International Journal of Concrete Structures and Materials composite column concrete-encased steel angle high-strength steel confinement local-buckling cover-spalling |
author_facet |
Chang-Soo Kim Hyeon-Jong Hwang |
author_sort |
Chang-Soo Kim |
title |
Numerical Investigation on Load-carrying Capacity of High-strength Concrete-encased Steel Angle Columns |
title_short |
Numerical Investigation on Load-carrying Capacity of High-strength Concrete-encased Steel Angle Columns |
title_full |
Numerical Investigation on Load-carrying Capacity of High-strength Concrete-encased Steel Angle Columns |
title_fullStr |
Numerical Investigation on Load-carrying Capacity of High-strength Concrete-encased Steel Angle Columns |
title_full_unstemmed |
Numerical Investigation on Load-carrying Capacity of High-strength Concrete-encased Steel Angle Columns |
title_sort |
numerical investigation on load-carrying capacity of high-strength concrete-encased steel angle columns |
publisher |
SpringerOpen |
series |
International Journal of Concrete Structures and Materials |
issn |
1976-0485 2234-1315 |
publishDate |
2018-01-01 |
description |
Abstract To investigate the load-carrying capacity of high-strength concrete-encased steel angle (CES-A) columns, in which corner steel angles are encased in concrete and transmit column loads directly, a numerical study was performed by using a proposed analysis model. The proposed model considered the strain compatibility, confinement effect, local buckling, and premature cover-spalling, and was verified against previous experimental study results. To investigate the effect of design parameters, a parametric study was conducted, and based on the parametric study results, a simple approach was also discussed to predict the residual strength (2nd peak load) after spalling of concrete cover at corners (1st peak load). The numerical investigations showed that when steel contribution and confinement efficiency are high, CES-A columns exhibit relatively large load-carrying capacity even after cover-spalling, due to the maintained strength of confined concrete and yielding of steel angles, and the proposed simple approach gave a good prediction for the residual strength. |
topic |
composite column concrete-encased steel angle high-strength steel confinement local-buckling cover-spalling |
url |
http://link.springer.com/article/10.1186/s40069-018-0238-7 |
work_keys_str_mv |
AT changsookim numericalinvestigationonloadcarryingcapacityofhighstrengthconcreteencasedsteelanglecolumns AT hyeonjonghwang numericalinvestigationonloadcarryingcapacityofhighstrengthconcreteencasedsteelanglecolumns |
_version_ |
1725465325826211840 |