Theoretical model and structural performance of assembled joint between circular CFDST column and composite beam

• Autorzy: Guo Lei , Wang Jingfeng , Wang Wanqian

Identyfikatory

DOI

10.1007/s43452-020-00077-3

• Języki publikacji: EN

Abstrakty

EN

Circular concrete filled double skin steel tubular (CFDST) has broader application aspects in engineering practice due to its superior confinement and elegant architectural appearance compared with square CFDST. However, there is still lack of an effective and reliable assembled method to connect the circular CFDST column to the beam. This paper focused on the theoretical and structural behavior on the assembled joint between circular CFDST column and composite beam. A sophisticated theoretical model was proposed to evaluate the initial rotational stiffness and moment capacity of the assembled joint. This theoretical model firstly accounted for the curved end plate in bending considering the clamping forces of blind bolts. Furthermore, a simplified arch model was developed to assess the circular steel tube in compression and the stiffness coefficients related to the circular CFDST column determined by the load transfer mechanism were also involved in the theoretical model. Subsequently, an experimental investigation on such kind of joint was conducted as a basis to verify the developed numerical model, indicating the numerical model could well replicate the typical failure modes and hysteresis curves. Parametric analyses based on the validated numerical model were performed to identify the effects of various parameters on the typical assembled joint. The theoretical model was verified to be capable of predicting the initial stiffness and moment capacity of assembled composite joint to circular CFDST column by comparing with the numerically observed results. The theoretical and analytical results performed in this paper would be beneficial for the application of the assembled beam to column joint in CFDST structures.

Słowa kluczowe

EN

circular concrete filled double-skin steel tubular; prefabricated joint; composite beam; theoretical model; parametric analysis

PL

analiza parametryczna; belka zespolona; model teoretyczny

• Wydawca: Springer ; Wrocław University of Science and Technology
• Czasopismo: Archives of Civil and Mechanical Engineering
• Rocznik: 2020
• Tom: Vol. 20, no. 3
• Strony: 167--189
• Opis fizyczny: Bibliogr. 35 poz., fot., rys., wykr.

Twórcy

autor

Guo Lei

• School of Civil Engineering, Hefei University of Technology, Hefei 230009, Anhui Province, China

autor

Wang Jingfeng

• School of Civil Engineering, Hefei University of Technology, Hefei 230009, Anhui Province, China
• Anhui Key Laboratory of Civil Engineering Structures and Materials, Hefei 230009, Anhui Province, China

autor

Wang Wanqian

• School of Civil Engineering, Hefei University of Technology, Hefei 230009, Anhui Province, China

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Uwagi

PL

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2021)