Zhong Tao | Western Sydney University (original) (raw)

Papers by Zhong Tao

Research paper thumbnail of Performance of concrete-filled thin-walled steel tubes under pure torsion

Thin-Walled Structures, 2007

... torsional capacity calculating formula, which suitable for CFST with circular and square sect... more ... torsional capacity calculating formula, which suitable for CFST with circular and square sections was suggested ... and its core concrete is the key issue to understand the behaviour of CFST ... In order to analyse the interaction of CFSTs under torsion conveniently, ABAQUS software ...

Research paper thumbnail of Strength and ductility of stiffened thin-walled hollow steel structural stub columns filled with concrete

Thin-Walled Structures, 2008

It is generally expected that inner-welded longitudinal stiffeners can be used to improve the str... more It is generally expected that inner-welded longitudinal stiffeners can be used to improve the structural performance of thin-walled hollow steel structural stub columns filled with concrete. Thirty-six specimens, including 30 stiffened stub columns and six unstiffened ones, were tested to investigate the improvement of ductile behaviour of such stiffened composite stub columns with various methods. The involved methods include increasing

Research paper thumbnail of Behaviour of concrete-filled steel tubular members subjected to shear and constant axial compression

Thin-Walled Structures, 2008

Concrete-filled steel tubes (CFST) are used extensively in modern civil engineering. In many case... more Concrete-filled steel tubes (CFST) are used extensively in modern civil engineering. In many cases, they are often subjected to shear and constant axial compression, particularly when being used in high-rise buildings. ABAQUS Programming is used in this paper for the analysis of CFST subjected to shear and constant axial compression. A comparison of results calculated using this model shows good agreement with test results in general. The theoretical model was used to investigate the influence of important parameters that determine the ultimate shearing strength of the composite members. The parametric studies provide information for the development of formulae to calculate the ultimate strength of CFST members subjected to shear and constant axial compression.

Research paper thumbnail of Experimental behaviour of high performance concrete-filled steel tubular columns

Thin-Walled Structures, 2008

In recent years, the utilization of high performance concrete has been the interests of the struc... more In recent years, the utilization of high performance concrete has been the interests of the structural engineers and researchers. As a high performance concrete, self-consolidating concrete (SCC) is a highly flowable concrete that can fill formwork without any mechanical ...

Research paper thumbnail of Concrete-filled thin-walled steel SHS and RHS beam-columns subjected to cyclic loading

Thin-Walled Structures, 2003

Research paper thumbnail of Behaviour of CFST stub columns with initial concrete imperfection: Analysis and calculations

Thin-Walled Structures, 2013

ABSTRACT Gap between the steel tube and concrete core can be considered as a kind of initial conc... more ABSTRACT Gap between the steel tube and concrete core can be considered as a kind of initial concrete imperfection in concrete-filled steel tubular (CFST) structures.This paper performs a nonlinear analysis of CFST stub columns with a circumferential gap or spherical-cap gap under axial compression. A nonlinear finite element model is developed, where the nonlinear material behaviour and the effect of gap on the interface behaviour of the concrete and steel tube are included. Close agreement is achieved between the test and calculated results in terms of load−deformation response and ultimate strength. In light of the numerical results, the behaviour of CFST columns with a circumferential gap or spherical-cap gap is analysed. Parametric studies are then carried out to investigate the influence of different parameters on the ultimate strength of CFST stub columns with gaps. Finally, the maximum limit of the gap ratio is proposed for CFST stub columns with circumferential gaps, and a simplified formula is proposed to estimate the effect of spherical-cap gap on the ultimate strength of CFST stub columns as well.

Research paper thumbnail of Behaviour of recycled aggregate concrete filled stainless steel stub columns

Materials and Structures, 2014

ABSTRACT Past research indicates that recycled aggregate concrete (RAC) could be successfully use... more ABSTRACT Past research indicates that recycled aggregate concrete (RAC) could be successfully used in concrete-filled steel tubular (CFST) columns. Their yielded performance is almost as good as that of the traditional CFST columns. In addition, as a comparatively new construction material, stainless steel can be used to replace carbon steel for enhancing the durability and ductility of CFST columns. With an aim to combine the advantages of both RAC and stainless steel, RAC is proposed in this paper to be used as a filling material for stainless steel tubes. A test program is introduced in this paper to investigate the behaviour of RAC-filled stainless steel stub columns. For comparison purposes, reference specimens with carbon steel tubes are also tested. In the end, finite element analysis is conducted to simulate the current test results and those reported in the literature.

Research paper thumbnail of Effects of Sustained Load on Concrete-Filled Hollow Structural Steel Columns

Journal of Structural Engineering, 2004

ABSTRACT

Research paper thumbnail of Seismic behaviour of circular CFST columns and RC shear wall mixed structures: Experiments

Journal of Constructional Steel Research, 2009

Research paper thumbnail of Stub column tests of fabricated square and triangular sections utilizing very high strength steel tubes

Journal of Constructional Steel Research, 2004

Research paper thumbnail of Performance of circular CFST column to steel beam frames under lateral cyclic loading

Journal of Constructional Steel Research, 2011

Research paper thumbnail of Experimental behaviour of stiffened concrete-filled thin-walled hollow steel structural (HSS) stub columns

Journal of Constructional Steel Research, 2005

Research paper thumbnail of Compressive and flexural behaviour of CFRP-repaired concrete-filled steel tubes after exposure to fire

Journal of Constructional Steel Research, 2007

Research paper thumbnail of Water-pressure test and determination of welding-throat-depth for welded built-up square CFST column

Journal of Constructional Steel Research, 2011

Research paper thumbnail of Curved concrete filled steel tubular (CCFST) built-up members under axial compression: Experiments

Journal of Constructional Steel Research, 2012

ABSTRACT A series of tests on curved concrete filled steel tubular (CCFST) built-up members subje... more ABSTRACT A series of tests on curved concrete filled steel tubular (CCFST) built-up members subjected to axial compression is described in this paper. Twenty specimens, including 18 CCFST built-up members and 2 curved hollow tubular built-up columns, were tested to investigate the influence of variations in the tube shape (circular and square), initial curvature ratio (βr, from 0 to 7.4%), nominal slenderness ratio (λn, from 9.9 to 18.9), section pattern (two main components, three main components and four main components), as well as brace pattern (battened and laced) on the performance of such composite built-up members. The experimental results showed that the ultimate strength and stiffness of CCFST built-up specimens decreased with increasing βr or λn. Different load-bearing capacities and failure modes were obtained for the battened and laced built-up members. A simplified method using an equivalent slenderness ratio was suggested to calculate the strength of CCFST built-up members under axial compression.

Research paper thumbnail of Concrete-filled double skin steel tubular (CFDST) beam–columns subjected to cyclic bending

Engineering Structures, 2006

In recent years, it was proposed by several researchers that concrete filled double skin steel tu... more In recent years, it was proposed by several researchers that concrete filled double skin steel tubes (CFDST) be studied for their strength as a column or a beam. Advantages of CFDST over fully concrete filled steel tubes (CFST) include: increase in section modulus; ...

Research paper thumbnail of Finite Element Modelling of Concrete-Filled Steel Tube Reinforced Concrete Stub Columns under Axial Compression

Applied Mechanics and Materials, 2013

Research paper thumbnail of Behaviour and resistance of hollow and concrete-filled mild steel columns due to transverse impact loading

Research paper thumbnail of Impact Behaviour and Design of Hollow and Concrete Filled Mild Steel Columns

Research paper thumbnail of Steel and Composite Structures: Proceedings of the 4th International Conference on Steel and Composite Structures (ICSCS10), Sydney, Australia, 21-23 July 2010

Research paper thumbnail of Performance of concrete-filled thin-walled steel tubes under pure torsion

Thin-Walled Structures, 2007

... torsional capacity calculating formula, which suitable for CFST with circular and square sect... more ... torsional capacity calculating formula, which suitable for CFST with circular and square sections was suggested ... and its core concrete is the key issue to understand the behaviour of CFST ... In order to analyse the interaction of CFSTs under torsion conveniently, ABAQUS software ...

Research paper thumbnail of Strength and ductility of stiffened thin-walled hollow steel structural stub columns filled with concrete

Thin-Walled Structures, 2008

It is generally expected that inner-welded longitudinal stiffeners can be used to improve the str... more It is generally expected that inner-welded longitudinal stiffeners can be used to improve the structural performance of thin-walled hollow steel structural stub columns filled with concrete. Thirty-six specimens, including 30 stiffened stub columns and six unstiffened ones, were tested to investigate the improvement of ductile behaviour of such stiffened composite stub columns with various methods. The involved methods include increasing

Research paper thumbnail of Behaviour of concrete-filled steel tubular members subjected to shear and constant axial compression

Thin-Walled Structures, 2008

Concrete-filled steel tubes (CFST) are used extensively in modern civil engineering. In many case... more Concrete-filled steel tubes (CFST) are used extensively in modern civil engineering. In many cases, they are often subjected to shear and constant axial compression, particularly when being used in high-rise buildings. ABAQUS Programming is used in this paper for the analysis of CFST subjected to shear and constant axial compression. A comparison of results calculated using this model shows good agreement with test results in general. The theoretical model was used to investigate the influence of important parameters that determine the ultimate shearing strength of the composite members. The parametric studies provide information for the development of formulae to calculate the ultimate strength of CFST members subjected to shear and constant axial compression.

Research paper thumbnail of Experimental behaviour of high performance concrete-filled steel tubular columns

Thin-Walled Structures, 2008

In recent years, the utilization of high performance concrete has been the interests of the struc... more In recent years, the utilization of high performance concrete has been the interests of the structural engineers and researchers. As a high performance concrete, self-consolidating concrete (SCC) is a highly flowable concrete that can fill formwork without any mechanical ...

Research paper thumbnail of Concrete-filled thin-walled steel SHS and RHS beam-columns subjected to cyclic loading

Thin-Walled Structures, 2003

Research paper thumbnail of Behaviour of CFST stub columns with initial concrete imperfection: Analysis and calculations

Thin-Walled Structures, 2013

ABSTRACT Gap between the steel tube and concrete core can be considered as a kind of initial conc... more ABSTRACT Gap between the steel tube and concrete core can be considered as a kind of initial concrete imperfection in concrete-filled steel tubular (CFST) structures.This paper performs a nonlinear analysis of CFST stub columns with a circumferential gap or spherical-cap gap under axial compression. A nonlinear finite element model is developed, where the nonlinear material behaviour and the effect of gap on the interface behaviour of the concrete and steel tube are included. Close agreement is achieved between the test and calculated results in terms of load−deformation response and ultimate strength. In light of the numerical results, the behaviour of CFST columns with a circumferential gap or spherical-cap gap is analysed. Parametric studies are then carried out to investigate the influence of different parameters on the ultimate strength of CFST stub columns with gaps. Finally, the maximum limit of the gap ratio is proposed for CFST stub columns with circumferential gaps, and a simplified formula is proposed to estimate the effect of spherical-cap gap on the ultimate strength of CFST stub columns as well.

Research paper thumbnail of Behaviour of recycled aggregate concrete filled stainless steel stub columns

Materials and Structures, 2014

ABSTRACT Past research indicates that recycled aggregate concrete (RAC) could be successfully use... more ABSTRACT Past research indicates that recycled aggregate concrete (RAC) could be successfully used in concrete-filled steel tubular (CFST) columns. Their yielded performance is almost as good as that of the traditional CFST columns. In addition, as a comparatively new construction material, stainless steel can be used to replace carbon steel for enhancing the durability and ductility of CFST columns. With an aim to combine the advantages of both RAC and stainless steel, RAC is proposed in this paper to be used as a filling material for stainless steel tubes. A test program is introduced in this paper to investigate the behaviour of RAC-filled stainless steel stub columns. For comparison purposes, reference specimens with carbon steel tubes are also tested. In the end, finite element analysis is conducted to simulate the current test results and those reported in the literature.

Research paper thumbnail of Effects of Sustained Load on Concrete-Filled Hollow Structural Steel Columns

Journal of Structural Engineering, 2004

ABSTRACT

Research paper thumbnail of Seismic behaviour of circular CFST columns and RC shear wall mixed structures: Experiments

Journal of Constructional Steel Research, 2009

Research paper thumbnail of Stub column tests of fabricated square and triangular sections utilizing very high strength steel tubes

Journal of Constructional Steel Research, 2004

Research paper thumbnail of Performance of circular CFST column to steel beam frames under lateral cyclic loading

Journal of Constructional Steel Research, 2011

Research paper thumbnail of Experimental behaviour of stiffened concrete-filled thin-walled hollow steel structural (HSS) stub columns

Journal of Constructional Steel Research, 2005

Research paper thumbnail of Compressive and flexural behaviour of CFRP-repaired concrete-filled steel tubes after exposure to fire

Journal of Constructional Steel Research, 2007

Research paper thumbnail of Water-pressure test and determination of welding-throat-depth for welded built-up square CFST column

Journal of Constructional Steel Research, 2011

Research paper thumbnail of Curved concrete filled steel tubular (CCFST) built-up members under axial compression: Experiments

Journal of Constructional Steel Research, 2012

ABSTRACT A series of tests on curved concrete filled steel tubular (CCFST) built-up members subje... more ABSTRACT A series of tests on curved concrete filled steel tubular (CCFST) built-up members subjected to axial compression is described in this paper. Twenty specimens, including 18 CCFST built-up members and 2 curved hollow tubular built-up columns, were tested to investigate the influence of variations in the tube shape (circular and square), initial curvature ratio (βr, from 0 to 7.4%), nominal slenderness ratio (λn, from 9.9 to 18.9), section pattern (two main components, three main components and four main components), as well as brace pattern (battened and laced) on the performance of such composite built-up members. The experimental results showed that the ultimate strength and stiffness of CCFST built-up specimens decreased with increasing βr or λn. Different load-bearing capacities and failure modes were obtained for the battened and laced built-up members. A simplified method using an equivalent slenderness ratio was suggested to calculate the strength of CCFST built-up members under axial compression.

Research paper thumbnail of Concrete-filled double skin steel tubular (CFDST) beam–columns subjected to cyclic bending

Engineering Structures, 2006

In recent years, it was proposed by several researchers that concrete filled double skin steel tu... more In recent years, it was proposed by several researchers that concrete filled double skin steel tubes (CFDST) be studied for their strength as a column or a beam. Advantages of CFDST over fully concrete filled steel tubes (CFST) include: increase in section modulus; ...

Research paper thumbnail of Finite Element Modelling of Concrete-Filled Steel Tube Reinforced Concrete Stub Columns under Axial Compression

Applied Mechanics and Materials, 2013

Research paper thumbnail of Behaviour and resistance of hollow and concrete-filled mild steel columns due to transverse impact loading

Research paper thumbnail of Impact Behaviour and Design of Hollow and Concrete Filled Mild Steel Columns

Research paper thumbnail of Steel and Composite Structures: Proceedings of the 4th International Conference on Steel and Composite Structures (ICSCS10), Sydney, Australia, 21-23 July 2010