[HTML][HTML] Loading rate dependence of granular cushion under rockfall impact and proposal of an analytical model for impact force estimation

N Naito, K Maeda, H Konno, Y Ushiwatari, K Suzuki… - Acta Geotechnica, 2023 - Springer
The cushioning behaviour of granular materials, such as sand and gravel, has been studied
for the rational design and performance evaluation of a rock shed intended for rockfall …

[HTML][HTML] Rockfall impacts on sand cushions with different soil mechanical characteristics using discrete element method

N Naito, K Maeda, H Konno, Y Ushiwatari, K Suzuki… - Soils and …, 2020 - Elsevier
The cushioning behavior of materials, such as sand, is numerically studied using a discrete
element method (DEM) for the rational design and performance evaluation of a rock shed …

[HTML][HTML] Investigation on cushioning effect and force chain characteristics of cushion material of shed-hole structure under impact load

PF Han, X Li, H Cheng, H Qiu - Case Studies in Construction Materials, 2023 - Elsevier
To reduce the impact of mountain rockfall on the shed tunnel, cushion buffering materials
were designed as protective measures. The optimized design can improve the impact …

[PDF][PDF] Experimental and numerical study of rock-fall impacts on granular soils

F Calvetti, C Di Prisco, M Vecchiotti - Rivista Italiana di Geotecnica, 2005 - Citeseer
This paper investigates experimentally and numerically the phenomenon of boulder impacts
on granular soils typically used to reduce loads on shelters. Four series of full scale tests …

Investigation of Rockfall Impact Against Gravel Cushion via a Discrete Element Approach

W Shen, T Zhao, F Dai, J Zhou, N Xu - Proceedings of China-Europe …, 2018 - Springer
This study investigated the impact of rockfall impact against a granular cushion layer via 3-D
discrete element method (DEM). In the numerical model, the rock boulder was modeled as a …

Numerical simulation of a rockfall impacting a gravel cushion with varying initial angular velocity and particle sizes

S Duan, H Yu, B Xu - Granular Matter, 2023 - Springer
Gravel cushions are widely laid on the top of structures or rock sheds to absorb the impact
energy of rockfalls in mountainous districts. Based on the discrete element method, a …

Numerical and theoretical study of rockfall impact on shed with composite sand-airbag cushion materials

H Meree, D Wang, S Yan - Environmental Earth Sciences, 2023 - Springer
The composite cushion of sand and non-vented flexible airbags offers a promising
application in protecting galleries against rockfall. This research focuses on a numerical …

[HTML][HTML] Research on the impact force of rockfall impacting sand cushions with different shapes

Y Zhang, L Xie, B He, P Zhao - Applied Sciences, 2022 - mdpi.com
Shed structures are an important engineering method for mountain highways to resist
rockfall impacts. Research on the rockfall impact response is very important to the design of …

Influence of particle size on the buffering efficiency of soil cushion layer against rockfall impact

W Shen, T Zhao, F Dai - Natural Hazards, 2021 - Springer
Soil cushion layers are commonly paved in front of protection structures to avoid the direct
impact of rockfall and debris flow. This study is devoted to investigating the influence of …

[PDF][PDF] A Discrete Numerical Study of the Effect of the Thickness and the Porosity of the Sand Cushion on the Impact Response Due to the Rockfall

S Yuan, P Zhao, L Li, X Wang, J Liu… - CMES-Comp. Model …, 2022 - cdn.techscience.cn
The prevention and the reduction of the rockfall are the common measures of the prevention
and the reduction of disasters. When the rock-shed resists the impact of the rockfall, the force …