Research on seismic behavior of CFST column-H-beam fully assembly joint

Article Construction & Building Technology

Seismic behaviour of diaphragm-through bolted-welded joints between CFST column to steel beam

Ying Lin et al.

Summary: A new generation of through-diaphragm bolted-welded joints between narrow cross-section concrete filled steel tube column to H-beam were developed to solve the problems of reserved installation gaps and smaller joint stiffness of through-diaphragm bolted joints proposed by authors previously. Four new experiments were conducted to investigate the seismic behavior of these joints, considering both monotonic and hysteretic loading cases. The test results showed that these joints have larger stiffness, good ductility, satisfactory bearing capacity, stable and effective hysteretic behavior, and desirable energy dissipation capacity.

JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH (2023)

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Article Engineering, Civil

Seismic Behavior of Assembly Joint with CFST Column and H-shaped Steel Beam

Xiushu Qu et al.

Summary: The existing concrete-filled steel tubular (CFST) structures mainly use cast-in-situ concrete construction technology, and the vertical connection of columns mostly relies on steel tube connection, which results in issues concerning the control of concrete pouring quality and the assembly of the structure as a whole. Therefore, the research on an assembly joint that enables full connection between the beam and CFST column is crucial for improving construction quality and promoting the development of assembled structures.

KSCE JOURNAL OF CIVIL ENGINEERING (2023)

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Article Construction & Building Technology

Experimental investigation and analytical modeling of steel beam-to-CFDST column connection

Junchao Fan et al.

Summary: This paper developed a prefabricated connection between concrete-filled double-skin steel tubular (CFDST) column and steel beam, and conducted a series of tests to investigate the seismic performance of the connection. The results showed that increasing the endplate thickness and changing the inner tube shape significantly improved the ultimate strength of the connection. The ultimate strength was not sensitive to the axial compression ratio and bolt diameter, while it decreased with an increase in the concrete fill degree. Increasing the endplate thickness, axial compression ratio, bolt diameter, and changing the inner tube shape resulted in higher ductility and accumulated energy dissipation. However, the ductility and accumulated energy dissipation decreased with an increase in the concrete fill degree.

JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH (2022)

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Article Construction & Building Technology

Seismic performance of CFST column to steel beam joint with outer annular stiffener

Peizhen Xu et al.

Summary: This study investigates the CFST column to H-shaped steel beam joint with outer annular stiffener through experiments, and finds that smaller column width-thickness ratio can improve the elastic stiffness and ultimate bearing capacity of the specimens.

JOURNAL OF BUILDING ENGINEERING (2022)

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Article Construction & Building Technology