Designing ductile RC columns: Axial force effect

Date, time & venue
2017-09-27;6:00 pm – 6:30 pm (Refreshment), 6:30 pm – 7:30 pm (Talk);James Chiu & Dragages Rooms – 9/F


Speakers: Ir Prof J S Kuang, PhD CEng FICE FIStructE FHKIE, Department of Civil and Environmental Engineering, Hong Kong University of Science and Technology



The effects of axial force ratio (AFR) on the seismic behaviour and confinement detailing of RC columns are presented. It is shown from a comprehensive statistical analysis that ductility, ultimate displacement of columns and hysteretic energy dissipation under seismic loading can significantly be reduced by increasing AFR. EC8 stipulates reasonable limits of AFR for various types of RC columns with different ductility classes, whereas the limits set by NZ and ACI seem to deviate from experimental results. The development of seismic design provisions for RC columns with the effect of AFR and confinement detailing are discussed.


About Speaker:

J S Kuang is a Professor of Civil Engineering at HKUST. He received his PhD in engineering science from the University of Cambridge and PhD in civil engineering from the University of Hong Kong. His research interests are primarily focused on the design of concrete structures for seismic resistance, seismic vulnerability assessment of tall buildings, and computational mechanics and simulation in structural engineering. His outstanding research has earned him the prestigious Telford Premium 2014 and T K Hsieh Award 2006 from ICE, the HKIE Best Transactions Paper Prize 2016 and 2007 from HKIE, and the Grand R&D Award of Structural Excellence Award 2017 from HKIE-IStructE JSD.


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