Seismic Behavior of Concrete-Filled Circular Steel Tubular Column–Reinforced Concrete Beam Frames with Recycled Aggregate Concrete

Chen, Zongping; Zhou, Ji; Li, Zhibin; Wang, Xinyue; Zhou, Xingyu

doi:10.3390/app10072609

Cited by 9 publications

(9 citation statements)

References 18 publications

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“…For a building, the load due to gravity can be regarded as vertical load, the transmission path of the vertical load in the building structure from top to bottom is "floor -beam -column -foundation". The upper load of the building must pass through the beam-column joint [9] when the vertical load is transmitted downward [12]. When the vertical load is transmitted to the beam-column joint, the contact surface of the load suddenly becomes smaller, and the stress will also change greatly.…”

Section: Concrete Beam-column Jointsmentioning

confidence: 99%

“…Mou et al [8] conducted experiments on a new beam to reinforced concrete-filled steel tube column joint and found through experiments that the cross section of the transfer sleeve in the column node was the key factor affecting the strength of the beam-column node. Chen et al [9] investigated the seismic performance of a circular concrete an et al [7] proposed a joint type of concrete-filled square steel tubular columns and filled steel tubular column-reinforced concrete beam frame under low cyclic loading and found through tests that the design method of the recycled aggregate concrete filled circular steel tube frame met the seismic design requirements of a stronger joint followed by the stronger column and the weaker beam and the frame had has good collapse resistance and energy dissipation capacity. In this paper, concrete beam-column joints were briefly introduced, the seismic performance of concrete beam-column joints was strengthened by a steel skeleton, and concrete beam-column joints and reinforced concrete beam-column joints were prepared for experimental analysis.…”

Section: Introductionmentioning

confidence: 99%

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Performance Study of Concrete Beam-Column Joints in Building Steel Structures Under High-Intensity Vibration

2022

IJM

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In order to minimize the loss of life and property in an earthquake, the beamcolumn joints of buildings need to have good seismic performance. This paper briefly introduced concrete beam-column joints and used a steel skeleton to strengthen the seismic performance of concrete beam-column joints. The concrete beam-column and reinforced concrete beam-column joints were prepared for experimental analysis. The skeleton curve and energy dissipation capacity of the joints were tested using quasi-static loading experiments. The relative displacement of the column at different heights in the beam-column joints was tested under an eight-degree earthquake simulated by a vibration table. The results showed that the reinforced concrete beam-column joint had higher peak loads and ultimate displacements when the quasi-static loading displacement exceeded the yield displacement; the reinforced concrete beam-column joint had stronger energy dissipation capacity in the face of cyclic loads; the reinforced concrete beam-column joint had smaller relative column displacements in the face of an eight-degree earthquake.

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Section: Concrete Beam-column Jointsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Performance Study of Concrete Beam-Column Joints in Building Steel Structures Under High-Intensity Vibration

2022

IJM

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“…However, the method's applicability to S‐RACFST frame has largely gone unexplored. An experimental investigation on circular RACFST was done by Chen et al 32 and Wen et al 33 The structural performance of the S‐RACFST was discussed by Li et al 34 in comparison to the circular specimen reported by Chen et al 32 The S‐RACFST frame has been determined to have the qualities of a high bearing capacity, good ductility, and superior seismic performance. In this paper, based on summarizing the previous research, the inter‐story displacement angle limit value was adopted as the quantitative index of each performance level, and the specific steps of displacement‐based seismic design of S‐RACFST frame structure were proposed.…”

Section: Introductionmentioning

confidence: 99%

Analysis on displacement‐based seismic design method of recycled aggregate concrete‐filled square steel tube frame structures

Zhang

Liu

Zhang³

et al. 2023

Structural Concrete

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Recycled aggregate concrete-filled square steel tube (S-RACFST) frame has the characteristics of high bearing capacity, good ductility, and superior seismic performance. To propose a displacement-based seismic design of S-RACFST frame, the validity of the design method was verified by a detailed calculation example. Based on the performance requirements, this design method divided the structural performance into five levels: normal use, temporary use, use after strengthening, life safety, and collapse prevention, and suggested specific steps for the displacement-based seismic design of S-RACFST frame using the inter-story displacement angle limit value as the quantitative indicator. The 10-story S-RACFST frame was used as an analytical example for static elasticplastic analysis. The pushover lateral displacement curves of the frame structure at each performance level were obtained and compared with the displacement-based seismic design curves. The results show that the displacement-based seismic design method of S-RACFST frame structures can fulfill the performance level requirements such as "temporary use," "normal use," and "collapse prevention," and the displacement-based seismic design method is one of the effective ways to realize the performance design of S-RACFST frame structures.

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“…However, the existence of blocks reduces the bearing capacity and hysteretic properties of specimens when compared with all cast-in-place columns. Regarding cast-in-place concrete, Chen et al [ 22 ] researched the seismic behavior of the RACFST circular frames. The frames demonstrated optimal deformation performance, collapse resistance, and energy dissipation capacity.…”

Section: Introductionmentioning

confidence: 99%

Seismic Behavior Analysis of Recycled Aggregate Concrete-Filled Square Steel Tube Frames

et al. 2023

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In this study, the seismic behavior of a recycled aggregate concrete-filled square steel tube (S-RACFST) frame under different design conditions was investigated. Based on previous studies, a finite element model for the seismic behavior of the S-RACFST frame was developed. Moreover, the axial compression ratio, beam–column line stiffness ratio, and yield bending moment ratio of the beam–column were regarded as the variation parameters. It was through these parameters that the seismic behavior of eight S-RACFST frame finite element specimens was discussed. The seismic behavior indexes, such as the hysteretic curve, ductility coefficient, energy dissipation coefficient, and stiffness degradation were obtained—which, in turn, revealed the influence law and the degree of the design parameters regarding seismic behavior. Moreover, the sensitivity of the various parameters with respect to the seismic behavior of the S-RACFST frame was evaluated via grey correlation analysis. The results show that the hysteretic curves of the specimens were fusiform and full with respect to the different parameters. Firstly, with the axial compression ratio increasing from 0.2 to 0.4, the ductility coefficient increased by 28.5%. In addition, the equivalent viscous damping coefficient of the specimen with the axial compression ratio of 0.4 was 17.9% higher than that of the specimen with the axial compression ratio of 0.2, which was 11.5% as well as that with an axial compression ratio of 0.3. Second, when the line stiffness ratio rises from 0.31 to 0.41, the specimens’ bearing capacity and displacement ductility coefficient both get better. However, the displacement ductility coefficient gradually decreases when the line stiffness ratio is greater than 0.41. As a result, an optimal line stiffness ratio (0.41) thus exhibits good energy dissipation capacity. Thirdly, with the increase in the yield bending moment ratio from 0.10 to 0.31, the bearing capacity of the specimens improves. In addition, the positive and negative peak loads increased by 16.4% and 22.8%, respectively. Moreover, the ductility coefficients were all close to three, thus demonstrating good seismic behavior. The stiffness curve of the specimen with a large yield bending moment ratio with respect to the beam–column, is higher than those that possess a small beam–column yield moment ratio. In addition, the yield bending moment ratio of the beam–column possesses a significant influence on the seismic behavior of the S-RACFST frame. Furthermore, the yield bending moment ratio of the beam–column should be considered first in order to ensure the seismic behavior of the S-RACFST frame.

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Seismic Behavior of Concrete-Filled Circular Steel Tubular Column–Reinforced Concrete Beam Frames with Recycled Aggregate Concrete

Cited by 9 publications

References 18 publications

Performance Study of Concrete Beam-Column Joints in Building Steel Structures Under High-Intensity Vibration

Performance Study of Concrete Beam-Column Joints in Building Steel Structures Under High-Intensity Vibration

Analysis on displacement‐based seismic design method of recycled aggregate concrete‐filled square steel tube frame structures

Seismic Behavior Analysis of Recycled Aggregate Concrete-Filled Square Steel Tube Frames

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