Numerical Modelling of Double-Twisted Wire Mesh for Low-Energy Rockfall Catch Fences

Author:

Al-Budairi Hassan1ORCID,Gao Zhiwei2,Steel Andrew1

Affiliation:

1. QTS Group Ltd., Glasgow ML10 6QJ, UK

2. James Watt School of Engineering, University of Glasgow, Glasgow G12 8QQ, UK

Abstract

Low-energy rockfall catch fences are designed to protect infrastructure such as railways and roads wherein the kinetic energy of falling rocks is less than 100 kJ. The typical design consists of a double-twisted steel wire mesh supported by ground posts and strengthened by anchoring wire ropes. The fence stops falling rocks by dissipating the impact energy mainly through elastoplastic stretching of steel wires in the mesh. In this study, a three-dimensional finite element model for double-twisted wire mesh was developed in Abaqus/Explicit. The model has been verified using both quasi-static loading and impact tests. It was found that proper geometrical representation is essential for accurate simulation of wire deformation modes and the interaction between double-twisted wires. The model also enables the application of the real stress–strain relationship of a single steel wire in constitutive models.

Funder

Knowledge Transfer Partnerships (KTP) programme of the Innovate UK

QTS Group Ltd.

Publisher

MDPI AG

Subject

General Earth and Planetary Sciences

Reference21 articles.

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2. Network Rail UK (2023, February 03). West of Exeter Route Resilience Study. Available online: https://www.networkrail.co.uk/wp-content/uploads/2016/11/West-of-Exeter-Route-Resilience-Study.pdf.

3. Etag, E.O.T.A. (2008). Guideline for European technical approval of falling rock protection kits. Eur. Organisat. Techn. Appr., 27.

4. Gerber, W. (2001). Guideline for the Approval of Rockfall Protection Kits, Swiss Agency for the Environment, Forests and Landscape (SAEFL); Swiss Federal Research Institute WSL.

5. Experimental Testing of Rockfall Barriers Designed for the Low Range of Impact Energy;Buzzi;Rock Mech. Rock Eng.,2013

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