Journal article

Analytical Solution for Estimating Sliding Displacement of Rigid Barriers Subjected to Boulder Impact

Arnold CY Yong, Carlos Lam, Nelson TK Lam, Jude Shalitha Perera, Julian SH Kwan



Rigid barriers are commonly used as defense measures in hilly areas to contain falling boulders and landslide debris, and the sliding displacement of these barriers is a key design consideration when space is limited. A new displacement-based model in the form of a closed-form solution is introduced in this paper to estimate the amount of sliding displacement that a barrier undergoes following a boulder impact. The model was derived based on the principles of energy and momentum conservation, and the derivations were presented. Laboratory tests were conducted to validate the analytical model, and the results consistently matched the analytical results for different impact velocities. Finite-..

View full abstract

University of Melbourne Researchers


Awarded by Australian Research Council (ARC)

Awarded by Research Grants Council of the Government of the Hong Kong SAR, China

Funding Acknowledgements

Financial support from the Australian Research Council (ARC) Discovery Project DP170101858, New Approach for Design of Barriers for Impact, is gratefully acknowledged. This paper is published with the permission of the Head of the Geotechnical Engineering Office and the Director of Civil Engineering and Development, the Government of the Hong Kong Special Administrative Region (SAR). Julian S. H. Kwan is grateful for the financial support from the theme-based research Grant No. T22-603/15-N provided by the Research Grants Council of the Government of the Hong Kong SAR, China.