Polymer concrete-filled steel tubes under axial compression

Oyawa, Walter O.; Sugiura, Kunitomo; Watanabe, Eiichi

doi:10.1016/s0950-0618(00)00034-9

Cited by 22 publications

(6 citation statements)

References 11 publications

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“…Owing to their merits of high compressive strength, durability, construction, and low cost, concrete-filled steel tubes (CFST) have been widely used in structures [1,2]. Nevertheless, the results obtained by intensive research have demonstrated that creep causes structural deformation and internal force redistribution, which has an important effect on the long-term mechanical behaviour of CFST columns [3].…”

Section: Introductionmentioning

confidence: 99%

Theoretical Framework for Creep Effect Analysis of Axially Loaded Short CFST Columns under High Stress Levels

Yang

Wen

et al. 2020

Advances in Civil Engineering

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Due to its excellent mechanical performances, axially loaded concrete-filled steel circular tube (CFST) columns have been widely used in structural engineering. As an important long-term behaviour of CFST structures, the creep has an obvious nonlinear property under high stress levels, which makes the influence of creep more complicated. In this study, to analyze the impacts of nonlinear creep effect on the behaviour of axially loaded short CFST columns, a complete theoretical framework for coupling analysis of 3D creep effect and material nonlinearity was presented. First, the concrete damaged plasticity model with a uniform constraint (UCCDP) was established to simulate the plasticity and damage evolution of a concrete core. Next, based on the UCCDP, a method of 3D nonlinear creep analysis and a corresponding numerical analysis method were established and implemented in the ABAQUS secondary platform. Finally, by comparing the predicted results with the experimental results, it was observed that the method proposed to predict the creep of axially loaded short CFST columns had satisfactory accuracy.

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Section: Introductionmentioning

confidence: 99%

Theoretical Framework for Creep Effect Analysis of Axially Loaded Short CFST Columns under High Stress Levels

Yang

Wen

et al. 2020

Advances in Civil Engineering

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“…A fracture energy based constitutive model was developed for the analysis of reinforced concrete structures under cyclic loading [15]. In order to investigate steel and concrete filled tubular structures, a series of works on instability, fatigue strength, hysteretic behaviors were conducted by employing cyclic and biaxial loading tests [17][18][19][20][21][22][23][24][25]. In their works, it was found that the axial compressive force had effects on the strength and ductility.…”

Section: Introductionmentioning

confidence: 99%

Structural Performances of Steel Reinforced Concrete Special Shaped Column-Beam Joints Under Bidirectional Low-Cyclic Reversed Loading

Xiang¹

2017

AJCE

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Steel reinforced concrete special-shaped column is a new structural form. It has all priorities of steel reinforced structure and special-shaped column structure. Bearing capacity and ductility of this new structure are very good. It also has very excellent applicable quality and pleasing to the eye. But there are still few experimental and research results relevant to this new structure. The design of steel reinforced concrete special-shaped column joints is a most important problem that must be solved to ensure that this new structural could be widely used in the future. This research focuses the attention on the seismic behavior of this kind of joints, and adopts the new joint design style. The pseudo-static test is carried out on joint specimens. Hysteresis loop of all the specimens have been drawn. The energy dissipating capacities are evaluated. Based on the results of experimental research, the behavior of high resistant capacity, excellent ductility and reliability of the joint design method have been manifested. Taking into account all these facts, this article also put forward practical design suggestions on this structure.

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“…A fracture energy–based constitutive model was developed for the analysis of RC structures under cyclic loading (He et al, 2008). In order to investigate steel- and concrete-filled tubular structures, a series of works on instability, fatigue strength, and hysteretic behaviors were conducted by employing cyclic and biaxial loading tests (Oyawa et al, 2001, 2004a, 2004b; Sugiura et al, 1987, 1991, 1992; Watanabe et al, 1991, 1998; Xu and Sugiura, 2014). In their works, it was found that the axial compressive force had effects on the strength and ductility.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation on joints between steel-reinforced concrete T-shaped column and reinforced concrete beam under bidirectional low-cyclic reversed loading

Xiang

Deng

et al. 2016

Advances in Structural Engineering

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Steel-reinforced concrete T-shaped column-beam structure system has superiorities of both steel-reinforced structure and special-shaped column structure. This research focuses on steel-reinforced concrete T-shaped column-beam joint design and experimentally investigates seismic behaviors of the proposed joints. Pseudo-static tests are carried out on three steel-reinforced concrete T-shaped column-reinforced concrete beam joints and one reinforced concrete T-shaped column-reinforced concrete beam joint. The experiments were conducted under bidirectional low-cyclic reversed loading to simulate realistic loading conditions under earthquake. Hysteresis loops of all the specimens, including load–deflection, moment–rotation, and load–shear deformation loops, are plotted for the evaluation of seismic reaction. The working index, ductility coefficient, and equivalent viscous-damping coefficient are calculated for comparisons. Meanwhile, the ductility, capacity of energy dissipation, stiffness degradation, and the function of steel reinforcement in resisting shear force in the joint core area are intensively studied. Based on experimental results, this research analyzes shear-resistant capacity and the inner force transmission in these joints. It is found that the steel-reinforced concrete T-shaped column-reinforced concrete beam joint performs well under seismic conditions; moreover, shear-resistant capacity, ductility, and reliability are satisfactory. Conclusions derived from this research are useful for engineering practice.

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Polymer concrete-filled steel tubes under axial compression

Cited by 22 publications

References 11 publications

Theoretical Framework for Creep Effect Analysis of Axially Loaded Short CFST Columns under High Stress Levels

Theoretical Framework for Creep Effect Analysis of Axially Loaded Short CFST Columns under High Stress Levels

Structural Performances of Steel Reinforced Concrete Special Shaped Column-Beam Joints Under Bidirectional Low-Cyclic Reversed Loading

Experimental investigation on joints between steel-reinforced concrete T-shaped column and reinforced concrete beam under bidirectional low-cyclic reversed loading

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