Tae-Hyung Lee | Konkuk University (original) (raw)

Papers by Tae-Hyung Lee

Research paper thumbnail of FOSM 방법을 이용한 내진성능 중요부재 판별법

Journal of the Earthquake Engineering Society of Korea, 2009

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Research paper thumbnail of 도시철도 개착터널의 확률적 내진성능평가

Journal of korean society of hazard mitigation, 2012

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Research paper thumbnail of Out-of-plane buckling of arches with varying curvature

KSCE Journal of Civil Engineering, 2009

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Research paper thumbnail of In-plane elastic buckling of pin-ended shallow parabolic arches

Engineering Structures, 2007

The classical buckling theory is commonly adopted to evaluate the buckling load of arches regardl... more The classical buckling theory is commonly adopted to evaluate the buckling load of arches regardless of their types and shapes. For shallow arches, however, the classical buckling theory may overestimate the buckling load because of a large pre-buckling deformation. In this study, the ...

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Research paper thumbnail of Finite element formulation of a composite double T-beam subjected to torsion

Engineering Structures, 2007

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Research paper thumbnail of In-plane strength and design of parabolic arches

Engineering Structures, 2009

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Research paper thumbnail of Seismic performance evaluation of non-structural components: drywall partitions

Earthquake Engineering & Structural Dynamics, 2007

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Research paper thumbnail of Seismic demand sensitivity of reinforced concrete shear-wall building using FOSM method

Earthquake Engineering & Structural Dynamics, 2005

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Research paper thumbnail of Numerical characteristics of peer-to-peer (P2P) internet online hybrid test system and its application to seismic simulation of SRC structure

Earthquake Engineering & Structural Dynamics, 2008

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Research paper thumbnail of Analytical Evaluation of Reinforced Concrete Pier and Cast-in-Steel-Shell Pile Connection Behavior considering Steel-Concrete Interface

Advances in Materials Science and Engineering, 2016

The seismic design of bridges may require a large-diameter deep pile foundation such as a cast-in... more The seismic design of bridges may require a large-diameter deep pile foundation such as a cast-in-steel-shell (CISS) pile where a reinforced concrete (RC) member is cast in a steel casing. In practice, the steel casing is not considered in the structural design and the pile is assumed to be an RC member. It is partially attributed to the difficulties in evaluation of composite action of a CISS pile. However, by considering benefits provided by composite action of the infilled concrete and the steel casing, both the cost and size of CISS pile can be reduced. In this study, the structural behavior of the RC pier and the CISS pile connection is simulated by using an advanced 3D finite element (FE) method, where the interface between the steel and concrete is also modeled. Firstly, the FE model is verified. Then, the parametric study is conducted. The analysis results suggest that the embedment length and the friction coefficient between the steel casing and the infilled concrete affect...

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Research paper thumbnail of Bending Stiffness Requirement for Closed-Section Longitudinal Stiffeners of Isotropic Material Plates under Uniaxial Compression

J. Bridge Eng., 2014

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Research paper thumbnail of Prediction of axial load capacity of stub circular concrete-filled steel tube using fuzzy logic

Journal of Constructional Steel Research, 2014

ABSTRACT A circular concrete-filled steel tube (CFST) has several advantages compared with the co... more ABSTRACT A circular concrete-filled steel tube (CFST) has several advantages compared with the conventional reinforced concrete member or hollow steel tube, since the tri-axial state of compression of the concrete infill increases its strength and strain capacity. Extensive studies have been conducted on the CFST and several researchers suggested empirical and theoretical formulas to predict the confinement effect and confined compressive strength of the concrete infill of the CFST. However, the previously proposed equations vary significantly because of the nature of complexity and uncertainty of the tri-axial stress state in the concrete infill. This study presented an alternative method to determine the confinement effect of the concrete infill and the axial load capacity of the stub CFST by using fuzzy logic. The focus was made on the accurate estimation of the confinement effect of the CFST by using a fuzzy-based model that makes it possible to evaluate the interaction between various parameters that affect the confinement effect. The proposed fuzzy-based model for the confinement effect and axial load capacity of the stub CFST was compared with current deign codes and the results of previous studies. It was found that the proposed fuzzy-based model provides a good prediction of the confinement effect and axial load capacity of the stub CFST. Finally, the design chart to estimate the confinement effect of the stub CFST was provided for practical design purpose.

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Research paper thumbnail of Sensitivity analysis of steel buildings subjected to column loss

Engineering Structures, 2011

In this study, the sensitivity of design parameters of steel buildings subjected to progressive c... more In this study, the sensitivity of design parameters of steel buildings subjected to progressive collapse is studied. To this end, design parameters such as yield strengths of beams, columns, and braces, live load, elastic modulus, and damping ratio were considered as random variables. The Monte Carlo simulation, the Tornado Diagram analysis, and the First-Order Second Moment method were applied to

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Research paper thumbnail of FOSM 방법을 이용한 내진성능 중요부재 판별법

Journal of the Earthquake Engineering Society of Korea, 2009

Bookmarks Related papers MentionsView impact

Research paper thumbnail of 도시철도 개착터널의 확률적 내진성능평가

Journal of korean society of hazard mitigation, 2012

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Out-of-plane buckling of arches with varying curvature

KSCE Journal of Civil Engineering, 2009

Bookmarks Related papers MentionsView impact

Research paper thumbnail of In-plane elastic buckling of pin-ended shallow parabolic arches

Engineering Structures, 2007

The classical buckling theory is commonly adopted to evaluate the buckling load of arches regardl... more The classical buckling theory is commonly adopted to evaluate the buckling load of arches regardless of their types and shapes. For shallow arches, however, the classical buckling theory may overestimate the buckling load because of a large pre-buckling deformation. In this study, the ...

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Finite element formulation of a composite double T-beam subjected to torsion

Engineering Structures, 2007

Bookmarks Related papers MentionsView impact

Research paper thumbnail of In-plane strength and design of parabolic arches

Engineering Structures, 2009

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Seismic performance evaluation of non-structural components: drywall partitions

Earthquake Engineering & Structural Dynamics, 2007

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Seismic demand sensitivity of reinforced concrete shear-wall building using FOSM method

Earthquake Engineering & Structural Dynamics, 2005

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Numerical characteristics of peer-to-peer (P2P) internet online hybrid test system and its application to seismic simulation of SRC structure

Earthquake Engineering & Structural Dynamics, 2008

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Analytical Evaluation of Reinforced Concrete Pier and Cast-in-Steel-Shell Pile Connection Behavior considering Steel-Concrete Interface

Advances in Materials Science and Engineering, 2016

The seismic design of bridges may require a large-diameter deep pile foundation such as a cast-in... more The seismic design of bridges may require a large-diameter deep pile foundation such as a cast-in-steel-shell (CISS) pile where a reinforced concrete (RC) member is cast in a steel casing. In practice, the steel casing is not considered in the structural design and the pile is assumed to be an RC member. It is partially attributed to the difficulties in evaluation of composite action of a CISS pile. However, by considering benefits provided by composite action of the infilled concrete and the steel casing, both the cost and size of CISS pile can be reduced. In this study, the structural behavior of the RC pier and the CISS pile connection is simulated by using an advanced 3D finite element (FE) method, where the interface between the steel and concrete is also modeled. Firstly, the FE model is verified. Then, the parametric study is conducted. The analysis results suggest that the embedment length and the friction coefficient between the steel casing and the infilled concrete affect...

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Bending Stiffness Requirement for Closed-Section Longitudinal Stiffeners of Isotropic Material Plates under Uniaxial Compression

J. Bridge Eng., 2014

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Prediction of axial load capacity of stub circular concrete-filled steel tube using fuzzy logic

Journal of Constructional Steel Research, 2014

ABSTRACT A circular concrete-filled steel tube (CFST) has several advantages compared with the co... more ABSTRACT A circular concrete-filled steel tube (CFST) has several advantages compared with the conventional reinforced concrete member or hollow steel tube, since the tri-axial state of compression of the concrete infill increases its strength and strain capacity. Extensive studies have been conducted on the CFST and several researchers suggested empirical and theoretical formulas to predict the confinement effect and confined compressive strength of the concrete infill of the CFST. However, the previously proposed equations vary significantly because of the nature of complexity and uncertainty of the tri-axial stress state in the concrete infill. This study presented an alternative method to determine the confinement effect of the concrete infill and the axial load capacity of the stub CFST by using fuzzy logic. The focus was made on the accurate estimation of the confinement effect of the CFST by using a fuzzy-based model that makes it possible to evaluate the interaction between various parameters that affect the confinement effect. The proposed fuzzy-based model for the confinement effect and axial load capacity of the stub CFST was compared with current deign codes and the results of previous studies. It was found that the proposed fuzzy-based model provides a good prediction of the confinement effect and axial load capacity of the stub CFST. Finally, the design chart to estimate the confinement effect of the stub CFST was provided for practical design purpose.

Bookmarks Related papers MentionsView impact

Research paper thumbnail of Sensitivity analysis of steel buildings subjected to column loss

Engineering Structures, 2011

In this study, the sensitivity of design parameters of steel buildings subjected to progressive c... more In this study, the sensitivity of design parameters of steel buildings subjected to progressive collapse is studied. To this end, design parameters such as yield strengths of beams, columns, and braces, live load, elastic modulus, and damping ratio were considered as random variables. The Monte Carlo simulation, the Tornado Diagram analysis, and the First-Order Second Moment method were applied to

Bookmarks Related papers MentionsView impact