Steel and Composite Structures

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In-plane structural analysis of blind-bolted composite frames with semi-rigid joints

  • Waqas, Rumman (School of Civil and Environmental Engineering, The University of New South Wales) ;
  • Uy, Brian (School of Civil Engineering, The University of Sydney) ;
  • Wang, Jia (School of Civil Engineering, The University of Sydney) ;
  • Thai, Huu-Tai (Department of Infrastructure Engineering, The University of Melbourne)
  • Received : 2018.11.29
  • Accepted : 2019.03.31
  • Published : 2019.05.25
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Abstract

This paper presents a useful in-plane structural analysis of low-rise blind-bolted composite frames with semi-rigid joints. Analytical models were used to predict the moment-rotation relationship of the composite beam-to-column flush endplate joints that produced accurate and reliable results. The comparisons of the analytical model with test results in terms of the moment-rotation response verified the robustness and reliability of the model. Abaqus software was adopted to conduct frame analysis considering the material and geometrical non-linearities. The flexural behaviour of the composite frames was studied by applying the lateral loads incorporating wind and earthquake actions according to the Australian standards. A wide variety of frames with a varied number of bays and storeys was analysed to determine the bending moment envelopes under different load combinations. The design models were finalized that met the strength and serviceability limit state criteria. The results from the frame analysis suggest that among lateral loads, wind loads are more critical in Australia as compared to the earthquake loads. However, gravity loads alone govern the design as maximum sagging and hogging moments in the frames are produced as a result of the load combination with dead and live loads alone. This study provides a preliminary analysis and general understanding of the behaviour of low rise, semi-continuous frames subjected to lateral load characteristics of wind and earthquake conditions in Australia that can be applied in engineering practice.

Keywords

Acknowledgement

Supported by : Australian Research Council (ARC)

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