New Approach for Design of Barriers For Impact

Grant number: DP170101858 | Funding period: 2017 - 2021

Completed

Abstract

This project aims to quantify the resistant capacity of rigid reinforced concrete barriers. These barriers can protect lives and property on hill slopes, but construction of the foundation is costly to protect against boulder impacts. Free-standing reinforced concrete barriers without a foundation could be cheaper and effective in countering impact, but need research to accurately quantify their impact resistant capacity. The expected outcome is a new technology to make the built environment safer and more sustainable and affordable.

Related publications (16)

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Rockfall protection wall that can withstand multiple strikes without needing to be repaired

JS Perera, N Lam

2023-03-01

In a hilly and congested urban environment, use of reinforced concrete barrier for hillslope protection is common. With some of th..

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Experimental and Analytical Investigation of a RC Wall with a Gabion Cushion Subjected to Boulder Impact

Jude Shalitha Perera, Nelson Lam, Mahdi Miri Disfani, Emad Gad

2021-05-31

An experimental investigation involving the use of a full-scale pendulum device to deliver solid object impact on a reinforced con..

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Predictions of Localised Damage to Concrete Caused by a Low-Velocity Impact

Zireen ZA Majeed, Nelson TK Lam, Emad F Gad

2021-03-01

Hillside RC barriers protected by gabion cushion layers are commonly used as passive defence measures to contain landslides and ro..

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Closed-form expressions for improved impact resistant design of reinforced concrete beams

Arnold CY Yong, Nelson TK Lam, Scott J Menegon

2021-01-13

To facilitate the design of structural elements that are vulnerable to collision hazards, simple closed-form expressions have been..

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Development limitations of compressive arch and catenary actions in reinforced concrete special moment resisting frames under column-loss scenarios

Tarek Almusallam, Yousef Al-Salloum, Hussein Elsanadedy, Ngo Tuan, Priyan Mendis, Husain Abbas

2020-12-01

The progressive collapse of structures, and reinforced concrete (RC) in particular, has recently been the focus of practicing stru..

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Cantilevered RC Wall Subjected to Combined Static and Impact Actions

ACY Yong, NTK Lam, SJ Menegon, EF Gad

2020-09-01

A displacement-based (DB) model is introduced in this article alongside its detailed derivations to predict the flexural response ..

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Uncertainty quantification of the mechanical properties of lightweight concrete using micromechanical modelling

T Nguyen, A Ghazlan, T Nguyen, HT Thai, T Ngo

2020-05-01

This paper presents a micromechanical modelling framework for analysing the effects of microstructural uncertainties on the mechan..

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Experimental and Analytical Assessment of Flexural Behavior of Cantilevered RC Walls Subjected to Impact Actions

Arnold CY Yong, Nelson TK Lam, Scott J Menegon, Emad F Gad

2020-04-01

Reinforced concrete (RC) impact-resistance barriers, such as rockfall barriers, often consist of a cantilever RC wall, which is ex..

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Investigation of long-term corrosion resistance of reinforced concrete structures constructed with various types of concretes in marine and various climate environments

M Wasim, T Duc Ngo, M Abid

2020-03-20

Corrosion of steel in reinforced concrete is a serious concern for owners and asset managers of various concrete structures and in..

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Contact force generated by impact of boulder on concrete surface

Zireen ZA Majeed, Nelson TK Lam, Carlos Lam, Emad Gad, Julian SH Kwan

2019-10-01

Severe damage to dwellings and other types of structures can be caused by the impact of a moving, or falling, object in the extrem..

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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

2019-03-01

Rigid barriers are commonly used as defense measures in hilly areas to contain falling boulders and landslide debris, and the slid..

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Determination of contact force by compression testing of cylindrical specimens

ZZA Majeed, NTK Lam, C Lam, E Gad, JSH Kwan

2019-01-01

This paper presents a method for determining values of dynamic parameters of the Hunt and Crossley model in order to estimate the ..

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A note on Hunt and Crossley model with generalized visco-elastic damping

Jing Sun, Nelson Lam, Lihai Zhang, Dong Ruan, Emad Gad

2018-11-01

The Hunt and Crossley model has been demonstrated to give accurate predictions of contact force generated by the impact of a solid..

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Overturning stability of L-shaped rigid barriers subjected to rockfall impacts

Carlos Lam, Arnold CY Yong, Julian SH Kwan, Nelson TK Lam

2018-07-01

Reinforced concrete barriers are commonly used as defence measures in hilly areas to contain falling boulders and landslide debris..

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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

2018-02-01

In this paper, a new design approach based on the principles of energy and momentum conservation is proposed for the design of fre..

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Design of a hybrid composite anti-ram bollard against impact

P Tran, S Linforth, R Lumantarna, T NGO

2016-01-01

Anti-ram bollards provide critical perimeter protection for buildings and infrastructures against threats such as vehicle borne im..