Behavior and strength of circular tube confined reinforced-concrete (CTRC) columns

Liu, Jiepeng; Zhang, Sumei; Zhang, Xiaodong; Guo, Lanhui

doi:10.1016/j.jcsr.2009.03.014

Cited by 75 publications

(36 citation statements)

References 12 publications

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“…This kind of fabrication is adopted to postpone the local buckling of the tube and make a better confinement to the concrete core. Compared to the reinforcement cage, the steel tube not only provides more effective confinement to the concrete but also prevents the concrete from spalling off during an earthquake event [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Behaviour and design method of short square tubed-steel-reinforced-concrete columns under eccentric loading

Wang

Liu

Zhou

2016

Journal of Constructional Steel Research

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Section: Introductionmentioning

confidence: 99%

Behaviour and design method of short square tubed-steel-reinforced-concrete columns under eccentric loading

Wang

Liu

Zhou

2016

Journal of Constructional Steel Research

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“…Concrete-filled steel tube (CFST) columns are widely used in practical engineering because of their excellent constructability, such as reduced labor and materials, lack of formwork, and quick construction. In addition, CFST columns provide a high bearing capacity, good ductility, and toughness [1][2][3]. Considering the common use of beams and slabs, CFST columns with RC beams and RC slabs are an optimal choice for buildings.…”

Section: Introductionmentioning

confidence: 99%

Seismic Performance of Full‐Scale Joints Composed by Concrete‐Filled Steel Tube Column and Reinforced Concrete Beam with Steel Plate‐Stud Connections

Liu

et al. 2019

Advances in Civil Engineering

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A concrete-filled steel tube (CFST) column has the advantages of high bearing capacity, high stiffness, and good ductility, while reinforced concrete (RC) structure systems are familiar to engineers. The combinational usage of CFST and RC components is playing an important role in contemporary projects. However, existing CFST column-RC beam joints are either too complex or have insufficient stiffness at the interface, so their practical engineering application has been limited. In this study, the results of a practical engineering project were used to develop two kinds of CFST column-RC beam joints that are connected by vertical or U-shaped steel plates and studs. The seismic performance of full-scale column-beam joints with a shear span ratio of 4 was examined when they were subjected to a low-cyclic reversed loading test. The results showed a plump load-displacement curve for the CFST column-RC beam joint connected by steel plates and studs, and the connection performance satisfied the building code. The beam showed a bending failure mode similar to that of traditional RC joints. The failure area was mainly concentrated outside the steel plate, and the plastic hinge moved outward from the ends of the beam. When the calculated cross section was set at the ends of the beam, the bending capacity of joints with the vertical or U-shaped steel plates and studs increased compared to the RC joint. However, when the calculated cross section was set to the failure area, the capacity was similar to that of the RC joint. The proposed joints showed increases in the energy dissipation, average energy dissipation coefficient, and ductility coefficient compared to the RC joint.

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“…Furthermore, the connection between the CFST columns and RC beam is quite complicated, which then lead to great difficulty in design and construction. In order to overcome these problems, some scholars (Riyad and Rafael, 1998;Liu et al, 2009) have put forward the improved structure form called steel tube confined reinforced concrete (STCRC) columns. The most prominent feature of STCRC column is that the outside steel tube was cut off at both ends.…”

Section: Introductionmentioning

confidence: 99%

Damage evaluation and failure mechanism analysis of steel tube confined reinforced-concrete columns by acoustic emission technology

Pan

2018

Lat. Am. j. solids struct.

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As a new kind of composite structures and its advantages, the using of steel tube confined reinforced concrete (STCRC) columns have received increasing attention in civil engineering. Acoustic emission (AE) technique is applied to monitor the damage process of STCRC columns during an uniaxial compression test. The aim of this study is to investigate the damage evaluation and failure mechanisms of the STCRC columns from the perspective of microscopic damage. Typical AE parameters are extracted to quantify different damage condition and identify the critical point. Peak-frequency analysis classify the damage signal into groups, representing different AE generation mechanisms. Extended AE features, such as the RA value and the average frequency are calculated to discriminate the cracking modes of core concrete. The probability based Gaussian mixture model (GMM) are proposed for unsupervised damage pattern recognition. All presented AE results are good in accordance with the observed experimental outcomes. The AE technology enabled evaluating the damage condition, identifying critical point, disclosing the failure mechanism, and classifying damage modes for steel confined RC columns effectively.

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Behavior and strength of circular tube confined reinforced-concrete (CTRC) columns

Cited by 75 publications

References 12 publications

Behaviour and design method of short square tubed-steel-reinforced-concrete columns under eccentric loading

Behaviour and design method of short square tubed-steel-reinforced-concrete columns under eccentric loading

Seismic Performance of Full‐Scale Joints Composed by Concrete‐Filled Steel Tube Column and Reinforced Concrete Beam with Steel Plate‐Stud Connections

Damage evaluation and failure mechanism analysis of steel tube confined reinforced-concrete columns by acoustic emission technology

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