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Research

A glimpse of the research activites conducted recenlty in the areas of steel-concrete composite structures, blind-bolted connections, tubular structures, advanced numerical simulations, material testing, large-scale testing of structural members and connections are presented. The research projects that been completed, and on-going include, (i) Behaviour of blind-bolted connections in concrete-filled steel tubular columns, (ii) Influence of shear connectors on behaviours of square concrete-filled steel tubular columns, (iii) Load-introduction mechanism in composite members having bolted connections.

Full-scale testing of bolted connections with CFST members

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Material-level investigation

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Advanced numerical simulations/ Finite-element analysis

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Theoretical solutions

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Investigation on behaviour of shear connectors in composite steel-concrete columns

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Investigation on compressive performance of high-strength steel slender CFST members 

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Laboratory testing on load-transfer mechanism in CFST members

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Publications

Peer-reviewed Journals:

 

  • Debnath, P.P., Ning, W. and Chan, T.-M. (2025). Experimental, numerical, and analytical assessment for static performance of concrete-filled steel tube T-stub connections with group of high-strength blind-bolts. Engineering StructuresQ1, doi: 10.1016/j.engstruct.2025.120586 

  • Debnath, P.P., Ning, W. and Chan, T.-M. (2024). Group resistances of tensile-loaded anchored-bolted connections with CFST columns: tests, simulations, and theoretical models. Thin-Walled Structures, Q1, doi: 10.1016/j.tws.2024.112517

  • Debnath, P.P. and Chan, T.-M. (2024). Structural investigation of shear performance of square CFST column joints with extended hollo-bolts. Journal of Structural Engineering (ASCE), Q1, doi:10.1061/JSENDH.STENG-12813

  • Debnath, P.P., Xu, F. and Chan, T.-M. (2023). Load transfer mechanism in concrete-filled steel tubular columns: Developments, challenges and opportunities. Journal of Constructional Steel Research, Q1, doi: 10.1016/j.jcsr.2023.107781

  • Debnath, P.P. and Chan, T.-M. (2022). Experimental evaluation and component model for single-anchored blind-bolted concrete-filled tube connections under direct tension. Journal of Constructional Steel Research, Q1, doi: 10.1016/j.jcsr.2022.107391

  • Debnath, P.P. and Chan, T.-M. (2022). Experimental performance of single blind-bolted CFST column connection under predominant shear loading. Journal of Constructional Steel Research, Q1, doi: 10.1016/j.jcsr.2022.107386

  • Debnath, P.P. and Chan, T.-M. (2021). A comprehensive numerical approach for modelling blind-bolted CFST connections. Structures, Q1, doi: 10.1016/j.istruc.2021.05.052

  • Debnath, P. P. and Chan, T.-M. (2021). Tensile behaviour of headed anchored hollo-bolts in concrete filled hollow steel tube connections. Engineering Structures, Q1, doi: 10.1016/j.engstruct.2021.111982

  • Debnath, P.P. and Choudhury, S. (2015). Effect of Unreinforced Masonry Infill on Floor Amplification and Other Parameters in Frame-Wall Buildings, Mechanics Based Design of Structures and Machines, Q2, doi: 10.1080/15397734.2015.1025961

Peer-reviewed Conferences:

  • Ning, W., Debnath, P.P., Chan, T.-M., Elghazouli A.Y. (2025). Investigation on load transfer mechanisms in concrete-filled steel tubular (CFST) columns with beam shear connections. Proceedings of the Annual Stability Conference of Structural Stability Research Council. Louisville, Kentucky, USA.

  • Debnath, P.P., Chan, T.-M., Chen, J., Varma, A.H., Elghazouli A.Y.  (2024). "Enhanced Load Transfer in Concrete-filled Tubes with Thin-walled High-performance Steel". The Third Workshop of High-Performance Steel Structures Research Council. Beijing, China. (Presentation only)

  • Debnath, P.P., Chan, T.-M., Chen, J., and Varma, A.H. (2023), Investigation of load transfer from infill concrete to steel tube in CFST square columns with headed shear studs, 11th International Conference on Advances in Steel Structures, Kuching, Malaysia.

  • Debnath, P.P., Chan, T.-M., Chen, J., and Varma, A.H. (2023), Performance evaluation of bond stress in thin-walled concrete-filled steel tube columns with shear connectors, 9th International Conference on Thin-Walled Structures, Sydney, Australia.

  • Debnath, P.P., Chen, J., Varma, A.H. and Chan, T.-M. (2023), Study on headed shear studs influencing the interfacial bond behaviour in CFST columns, 10th European Conference on Steel and Composite Structures, Amsterdam, Netherlands. doi: 10.1002/cepa.2368

  • Debnath, P.P. and Chan, T.-M. (2022), Mechanical performance of composite column connections with extended blind-bolt under shear loads, IStructE 24th Young Researchers Conference, London, UK.

  • Debnath, P.P. and Chan, T.-M. (2021), Enhanced Composite Behavior of CFST with Blind-Bolted Connections under Tensile Pull-out Tests,     9th European Conference on Steel and Composite Structures, Sheffield, UK. doi: 10.1002/cepa.1263

  • Debnath, P.P. and Chan, T.-M. (2021), Structural behavior of concrete-filled hollow steel tube joints with group of modified hollo-bolts,             2nd ZHITU Symposium on Advances in Civil Engineering, Ulsan, South Korea. (Abstract & Presentation)

  • Debnath, P.P. and Choudhury, S. (2014), Effect of Masonry Infill in Performance Based Seismic Design of Frame-Wall Buildings, Advancements in Structural Engineering: Materials, Design and Testing; Volume 5; Bloomsbury India, pp. 4308-4220. ISBN-10: 9384898716 [Book Chapter]

Patent:

Title: Hollow nut and expansion bolt assembly

Share: 33%; Status: Granted; Patent No.: ZL 2024 2 0512756.3

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