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Predicting the Load-Carrying Capacity of Timber-Concrete Notch Connections
The use of timber-concrete composite (TCC) structures has greatly risen because of their eco-friendly, economical and structural advantages. A crucial element in the design of TCC structures is the connection between the concrete and timber which determines the effectiveness of the composite action. Among different types of connections available in the literature, notch connections have been shown to provide relatively higher stiffness and strength when compared to others. However, limited studies have been done to predict the strength of notch connections in TCC structures.
This study presents a simplified analytical procedure to calculate the load-bearing capacity of notch connections without screws in TCC structures. First, a finite element (FE) modelling approach for TCC notch connections is developed and verified against the results of push-out tests collected from the literature. The analytical and experimental results are compared in terms of the peak strength, failure mode and crack pattern. By applying rational simplifications to the FE analysis results, closed-form equations that can approximate stress distributions at the peak strength of notch connections are developed. Using these approximate stress distributions and equilibrium requirements, a simple analytical procedure to predict the load-bearing capacity of notch connections is proposed. The accuracy of the proposed method is verified against experimental tests and FE analysis results. Considering its simplicity and rational basis, the proposed analytical method is expected to improve the design of TCC structures with notch connections.
Predicting the Load-Carrying Capacity of Timber-Concrete Notch Connections
The use of timber-concrete composite (TCC) structures has greatly risen because of their eco-friendly, economical and structural advantages. A crucial element in the design of TCC structures is the connection between the concrete and timber which determines the effectiveness of the composite action. Among different types of connections available in the literature, notch connections have been shown to provide relatively higher stiffness and strength when compared to others. However, limited studies have been done to predict the strength of notch connections in TCC structures.
This study presents a simplified analytical procedure to calculate the load-bearing capacity of notch connections without screws in TCC structures. First, a finite element (FE) modelling approach for TCC notch connections is developed and verified against the results of push-out tests collected from the literature. The analytical and experimental results are compared in terms of the peak strength, failure mode and crack pattern. By applying rational simplifications to the FE analysis results, closed-form equations that can approximate stress distributions at the peak strength of notch connections are developed. Using these approximate stress distributions and equilibrium requirements, a simple analytical procedure to predict the load-bearing capacity of notch connections is proposed. The accuracy of the proposed method is verified against experimental tests and FE analysis results. Considering its simplicity and rational basis, the proposed analytical method is expected to improve the design of TCC structures with notch connections.
Predicting the Load-Carrying Capacity of Timber-Concrete Notch Connections
Lecture Notes in Civil Engineering
Ilki, Alper (editor) / Çavunt, Derya (editor) / Çavunt, Yavuz Selim (editor) / Mirshekar, Sepideh (author) / Sadeghian, Vahid (author)
International Symposium of the International Federation for Structural Concrete ; 2023 ; Istanbul, Türkiye
2023-06-01
11 pages
Article/Chapter (Book)
Electronic Resource
English
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