Journal article

Displacement-Based Approach for the Assessment of Overturning Stability of Rectangular Rigid Barriers Subjected to Point Impact

Nelson TK Lam, Arnold CY Yong, Carlos Lam, Julian SH Kwan, Jude Shalitha Perera, Mahdi M Disfani, Emad Gad



In this paper, a new design approach based on the principles of energy and momentum conservation is proposed for the design of free-standing rigid barriers subject to point impact. The novelty of this approach lies in the fact that the mass inertia effect of the barriers and the coefficient of restitution for the impact are considered.With the new design approach, it is shown that for the same impact scenario, a taller barrier actually has a higher factor of safety due to the increased mass inertia-a result that could not have been obtained in a force-based calculation. The new approach has been verified by results from systematic physical and simulated impact experimentation. This paper pre..

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Awarded by Australian Research Council (ARC)

Awarded by Research Grants Council of the Government of Hong Kong Special Administrative Region, China

Funding Acknowledgements

Financial support from the Australian Research Council (ARC) Discovery Project DP170101858 entitled "New Approach for Design of Barriers For Impact" is gratefully acknowledged. The fourth author is grateful for financial support from the theme-based research grant T22-603/15-N provided by the Research Grants Council of the Government of Hong Kong Special Administrative Region, China. This paper is published with the permission of the Head of the Geotechnical Engineering Office and the Director of Civil Engineering and Development, Hong Kong SAR Government.