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Post-buckling Ductile Fracture of Thin-Walled Steel Beam-to-Column Connections

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Ultra-low-Cycle Fatigue Failure of Metal Structures under Strong Earthquakes

Part of the book series: Springer Tracts in Civil Engineering ((SPRTRCIENG))

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Abstract

Two thin-walled welded steel beam-to-column connections with weak panel zones are tested under ultra-low-cycle fatigue loading. Apparent shear buckling in panel zones is observed during the testing. The connections have stable and excellent seismic performance and finally fail due to post-buckling ductile fracture. This chapter aims to numerically simulate the post-buckling ductile cracking process using the previously proposed cyclic ductile fracture model and further investigate critical factors, such as equivalent panel zone width-to-thickness ratio, axial load ratio, and initial geometrical imperfection that affect cracking behaviors of the connections. The cyclic ductile fracture model is verified with the experimental data and employed to conduct the parametric analyses. Deterioration of stress-carrying capacity is also considered, and the fracture model can successfully simulate the load decrease in the hysteretic curves of the experimental results.

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Authors and Affiliations

  1. Tongji University, Shanghai, China

    Liang-Jiu Jia

  2. Meijo University, Nagoya, Japan

    Hanbin Ge

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  1. Liang-Jiu Jia
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  2. Hanbin Ge
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Correspondence to Liang-Jiu Jia .

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Jia, LJ., Ge, H. (2019). Post-buckling Ductile Fracture of Thin-Walled Steel Beam-to-Column Connections. In: Ultra-low-Cycle Fatigue Failure of Metal Structures under Strong Earthquakes. Springer Tracts in Civil Engineering . Springer, Singapore. https://doi.org/10.1007/978-981-13-2661-5_8

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  • DOI: https://doi.org/10.1007/978-981-13-2661-5_8

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  • Publisher Name: Springer, Singapore

  • Print ISBN: 978-981-13-2660-8

  • Online ISBN: 978-981-13-2661-5

  • eBook Packages: EngineeringEngineering (R0)

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