A novel composite joint with corrugated web and cover plates for simultaneously improving anti‑collapse resistance and seismic behavior

• Autorzy: Wang Jing-Xuan , Wang Wen-Qi , Gao Shan

Identyfikatory

DOI

10.1007/s43452-023-00614-w

• Języki publikacji: EN

Abstrakty

EN

This paper presents a numerical study on the progressive collapse response of concrete-filled steel tube (CFST) composite joint. A novel beam-column connection by using corrugated web and cover plate is proposed to enhance the collapse resistance of the joint. The simulated response is evaluated in terms of the ultimate load and deformation capacity of the joints for column removal scenario and cyclic loading. The results indicate that the corrugated web and cover plates connection can effectively delay the local buckling and fracture of the steel beam. Those configuration details have a significantly positive effect on the development of internal force, especially in the catenary mechanism stage to provide tensile force. Moreover, only after the fracture of the bottom fange, the corrugated web of the beam begins to contribute to the anti-collapse capacity of the joint. Compared with the CFST column-steel beam joint with fat beam web, the anti-collapse capacity and the vertical displacement of the joint are increased by 75.9% and 92.8%, respectively. Furthermore, a simplifed calculation method for the anti-collapse capacity of the joint is proposed according to the resistance mechanism analysis. In addition, the seismic evaluation of the novel joint based on anti-collapse design indicates that the novel connection details can signifcantly improve the collapse resistance of the joint, without impairing its seismic resistance.

Słowa kluczowe

EN

concrete filled steel tube; CFST; corrugated web; bolt weld connection; progressive collapse; catenary action

PL

rura stalowa wypełniona betonem; CFST; środnik falisty; połączenie śrubowe; katastrofa postępująca

• Wydawca: Springer ; Wrocław University of Science and Technology
• Czasopismo: Archives of Civil and Mechanical Engineering
• Rocznik: 2023
• Tom: Vol. 23, no. 2
• Strony: art. no. e77, 2023
• Opis fizyczny: Bibliogr. 44 poz., rys., tab., wykr.

Twórcy

autor

Wang Jing-Xuan

• School of Civil Engineering, Lanzhou University of Technology, Lanzhou 730050, China
• Western Center of Disaster Mitigation in Civil Engineering of Ministry of Education, Lanzhou University of Technology, Lanzhou 730050, People’s Republic of China

autor

Wang Wen-Qi

• School of Civil Engineering, Lanzhou University of Technology, Lanzhou 730050, China

autor

Gao Shan

• Key Lab of Structures Dynamic Behavior and Control of the Ministry of Education, Harbin Institute of Technology, Harbin 150090, China

• https://orcid.org/0000-0002-9590-9158

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