ETAG certified rockfall barriers — new design approach according to UNI 11211:4/2012

Cerro, Marco; Giacchetti, Giorgio; Lelli, Matteo; Grimod, Alberto; Arul, Adrian

doi:10.36487/acg_rep/1604_28_cerro

Proceedings of the First Asia Pacific Slope Stability in Mining Conference 2016

DOI: 10.36487/acg_rep/1604_28_cerro

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ETAG certified rockfall barriers — new design approach according to UNI 11211:4/2012

Marco Cerro¹,

Giorgio Giacchetti²,

Matteo Lelli³

et al.

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2024

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Towards an Optimization of Foundation Anchors of Landslide-Resisting Flexible Barriers: Dynamic Pullout Resistance of Anchors

Choi,

Zhang,

Xiong

2024

Progress in Landslide Research and Technology

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Existing research on the design of flexible barriers to arrest the landslide mass mainly focuses on the optimization of the superstructure. Little attention has been given to the optimization of the foundation anchors used to transmit dynamic impact loading from the landslides to the ground. In fact, existing design guidelines for foundation anchors of landslide-resisting flexible barriers are based on quasi-static pullout theories even though field evidence suggests that the dynamic response of an anchor is fundamentally different. In this study, a new analytical model is proposed to predict the peak pullout resistance for anchors subjected to dynamic loading in saturated sand. A novel experimental apparatus was developed to evaluate the proposed analytical model. Dynamic effects are profound in saturated sand and less so in dry sand. Rate strengthening at the soil-anchor interface is governed by pore pressure change from dilation and soil damping. The proposed model is shown to give close predictions of the measured peak dynamic pullout resistance, which is up to three times those under quasi-static conditions. Findings imply that rate strengthening changes the critical failure mechanism of a foundation anchor from the soil-anchor interface for quasi-static loading to the potential rupturing of the steel tendon for dynamic loading. This study highlights the need for the dynamic analysis of foundation anchors of landslide-resisting flexible barriers.

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Towards an Optimization of Foundation Anchors of Landslide-Resisting Flexible Barriers: Dynamic Pullout Resistance of Anchors

Choi,

Zhang,

Xiong

2024

Progress in Landslide Research and Technology

View full text Add to dashboard Cite

show abstract

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ETAG certified rockfall barriers — new design approach according to UNI 11211:4/2012

Cited by 1 publication

References 0 publications

Towards an Optimization of Foundation Anchors of Landslide-Resisting Flexible Barriers: Dynamic Pullout Resistance of Anchors

Towards an Optimization of Foundation Anchors of Landslide-Resisting Flexible Barriers: Dynamic Pullout Resistance of Anchors

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