Shear behavior and analytical model of T-type perfobond rib connectors

• Autorzy: Zhan Yulin , Huang Wenfeng , Li Yanyan , Zhang Cheng , Shao Junhu , Tian Bo

Identyfikatory

DOI

10.1007/s43452-023-00697-5

• Języki publikacji: EN

Abstrakty

EN

The stress of shear connectors becomes more complicated with the increase of the span length of steel–concrete composite bridges. To ensure sufficient stiffness and ductility, a T-type perfobond rib (T-type PBL) shear connector is proposed. However, its mechanical behavior is not well understood due to the special shape and numerous influencing factors. Therefore, sixty-three finite element models were established based on the push-out test specimens with T-type PBL connectors to investigate the shear behavior and influencing parameters of ultimate bearing capacity. The effects of concrete end-bearing, perforated reinforcement, hole diameter, rib height, and flange width of T-type PBL on the shear-bearing capacity were performed and discussed based on the numerical results. The results showed that the bearing capacity provided by the concrete end-bearing and the perforated reinforcements was about 16% and 10% of the ultimate load. Additionally, the ductility of the specimen could be improved by the perforated reinforcements. It was showed that the shear-bearing capacity increased nonlinearly with the growth of the hole diameter. When the height of rib increased from 80 to 120 mm, the shear-bearing capacity was improved by 12% on average. The impact of flange width on the shear-bearing capacity was insignificant, which was less than 1.5%. Based on the results of parametric analysis. An analytical model for shear-bearing capacity of the T-type perfobond rib shear connector was established, and the validity was verified by relative test results. A basis for the evaluation of shear-bearing capacity, and application of the T-type PBL connectors was provided in this paper.

Słowa kluczowe

EN

steel-concrete composite bridges; T-type PBL shear connector; push-out test; numerical analysis; shear capacity

PL

most stalowo-betonowy; analiza numeryczna; przęsło mostu

• Wydawca: Springer ; Wrocław University of Science and Technology
• Czasopismo: Archives of Civil and Mechanical Engineering
• Rocznik: 2023
• Tom: Vol. 23, no. 3
• Strony: art. no. e150, 2023
• Opis fizyczny: Bibliogr. 40 poz., rys., wykr.

Twórcy

autor

Zhan Yulin

• Department of Bridge Engineering, Southwest Jiaotong University, Chengdu 610031, China
• Institute of Civil Engineering Materials, Southwest Jiaotong University, Chengdu 610031, China

autor

Huang Wenfeng

• Department of Bridge Engineering, Southwest Jiaotong University, Chengdu 610031, China

autor

Li Yanyan

• Department of Bridge Engineering, Southwest Jiaotong University, Chengdu 610031, China

autor

Zhang Cheng

• Department of Bridge Engineering, Southwest Jiaotong University, Chengdu 610031, China

autor

Shao Junhu

• Department of Bridge Engineering, Southwest Jiaotong University, Chengdu 610031, China
• School of Architecture and Civil Engineering, Chengdu University, Chengdu 610106, China
• Sichuan Highway Planning, Survey, Design and Research Institute Ltd, Chengdu 610041, China

autor

Tian Bo

• Sichuan Highway Planning, Survey, Design and Research Institute Ltd, Chengdu 610041, China

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Uwagi

PL

Opracowanie rekordu ze środków MNiSW, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2024)