Numerical Modelling of Debris Straining Structures & A Holistic Approach to Geotechnical Challenges in Land Reclamation
Thu, 30 Oct
|Zoom
Numerical Modelling of Debris Straining Structures for LFLM Events Using LS-DYNA by Usman Majeed (Arup) and Building on New Ground: A Holistic Approach to Geotechnical Challenges in Land Reclamation by George Wong (Fugro Geotechnical Services Limited)
Time & Location
30 Oct 2025, 6:30 pm – 7:30 pm HKT
Zoom
About the event
Numerical Modelling of Debris Straining Structures for LFLM Events Using LS-DYNA
Synopsis
In Hong Kong, barriers designed using the Design Event Approach (DEA) are commonly used to mitigate debris flows. However, for catchments prone to Low-Frequency, Large-Magnitude (LFLM) events, DEA-based barriers alone may not provide sufficient protection. To address this, debris straining structures are often added to dissipate flow energy before or after impact with the barriers. These structures are typically designed using prescriptive methods, which can lead to overly conservative or inefficient solutions.
This ongoing study, supported by the Geotechnical Engineering Office (GEO), investigates the performance of straining structures through advanced numerical modelling using LS-DYNA. The presentation will outline the modelling approach and share preliminary findings aimed at improving design efficiency and reliability.
About the Speaker
Usman Majeed is a Geotechnical Engineer at Arup, holding a PhD in Civil Engineering from the Hong Kong University of Science and Technology…