Seismic behavior of circular tubed steel-reinforced concrete column to steel beam connections

Cheng, Guozhong; Zhou, Xuhong; Liu, Jiepeng; Chen, Y. Frank

doi:10.1016/j.tws.2018.10.041

Cited by 37 publications

(4 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Referring to [28], the axial strain (ε x ) and lateral strain (ε y ) at each point were synthesized into an equivalent strain (ε) using Formula (1). Figure 9 illustrates the load-strain curve for the entire specimen.…”

Section: Load-strain Curves For the Entire Columnmentioning

confidence: 99%

Mechanical Behavior of Precast Circular Semi-Continuous CFST Columns under a Uniaxial Eccentric Load

Cao,

Zhu,

Qian

et al. 2024

Buildings

View full text Add to dashboard Cite

For this study, we conducted a detailed examination and comprehensive comparative analysis of the structural responses and mechanical behavior of bolted sleeve connections in precast circular semi-continuous steel tubular concrete (PCSCFST) columns. The research involved fourteen specimens, and we considered the impacts of various parameters, including eccentricity, external steel sleeve thickness, bolt diameter, and slenderness ratio. The findings revealed that the external steel sleeve significantly enhances the protection of the connection area, enabling the bolts to effectively withstand eccentric loads. However, sleeves that are too thick may lead to premature bolt failure, reducing their ultimate load-bearing capacity. Using bolts to transfer loads to the concrete significantly strengthens the restraining effect of the steel sleeve. Nonetheless, increasing the bolt diameter beyond a certain threshold may diminish this beneficial impact, potentially leading to connection failure and a decrease in ultimate load-bearing capacity. A new ‘cooperative value q’ measures component collaboration at ultimate capacity, showing that shorter columns offer less effective coordination than longer ones. Through regression analysis, we formulated a prediction for axial ultimate bearing capacity, closely aligning with the experimental data (Npre-a/Nu average value of 1.003, variance 0.00248). Three N–M curves, including the Eurocode 4 method, offered conservative predictions, with Eurocode 4 closely matching the experimental results. A refined prediction method following Eurocode 4 was developed, yielding an average Ppre-U/Pu value of 0.971 and a variance of 0.0107.

show abstract

Section: Load-strain Curves For the Entire Columnmentioning

confidence: 99%

Mechanical Behavior of Precast Circular Semi-Continuous CFST Columns under a Uniaxial Eccentric Load

Cao,

Zhu,

Qian

et al. 2024

Buildings

View full text Add to dashboard Cite

show abstract

“…Figure 2 shows the schematic diagram of the experimental setup for the quasi-static loading. The main structure included electrohydraulic servo testing machine, dynamic signal acquisition system, displacement sensor, stress sensor, hydraulic jack, and push-pull jack [19]. The displacement sensor was installed outside the specimen, and the stress sensor was buried during the preparation of the beamcolumn joints.…”

Section: Seismic Performance Of Beam-column Joints Under Quasi-static...mentioning

confidence: 99%

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

2022

IJM

View full text Add to dashboard Cite

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.

show abstract

“…According to the calculation method in reference (Chen, 2003;Cheng et al, 2019;Hu, 2014), the strain measured by strain gauges were converted into stress.…”

Section: Stress Analysismentioning

confidence: 99%

Research on seismic behavior of special-shaped CFST column to H-section steel beam joint

Cheng

Yang

et al. 2021

Advances in Structural Engineering

Self Cite

View full text Add to dashboard Cite

To investigate the seismic behavior of joint between special-shaped concrete-filled steel tubular (CFST) column and H-section steel beam, a pseudo-static test was carried out on five specimens with scale ratio of 1:2. The investigated factors include stiffening types of steel tube (multi-cell and tensile bar) and connection types (exterior diaphragm and vertical rib). The failure modes, hysteresis curves, skeleton curves, stress distribution, and joint shear deformation of specimens were analyzed to investigate the seismic behaviors of joints. The test results showed the connections of exterior diaphragm and vertical rib have good seismic behavior and can be identified as rigid joint in the frames with bracing system according to Eurocode 3. The joint of special-shaped column with tensile bars have better seismic performance by using through vertical rib connection. Furthermore, a finite element model was established and a parametric analysis with the finite element model was conducted to investigate the influences of following parameters on the joint stiffness: width-to-thickness ratio of column steel tube, beam-to-column linear stiffness ratio, vertical rib dimensions, and axial load ratio of column. Lastly, preliminary design suggestions were proposed.

show abstract

Seismic behavior of circular tubed steel-reinforced concrete column to steel beam connections

Cited by 37 publications

References 9 publications

Mechanical Behavior of Precast Circular Semi-Continuous CFST Columns under a Uniaxial Eccentric Load

Mechanical Behavior of Precast Circular Semi-Continuous CFST Columns under a Uniaxial Eccentric Load

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

Research on seismic behavior of special-shaped CFST column to H-section steel beam joint

Contact Info

Product

Resources

About