Dynamic response of flexible rockfall barriers with different block shapes

Yu, Zhixiang; Luo, Liru; Liu, Chun; Guo, Liping; X, Qi; Zhao, Lei

doi:10.1007/s10346-021-01658-w

Cited by 18 publications

(11 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The types of cylindrical form blocks include ellipsoids, prisms, cylinders, etc. (Yu et al 2021) D r a f t Disc-shaped forms (Fig. 2c).…”

Section: Representation Of the Block Shape And Impact Anglementioning

confidence: 99%

“…There are three main types of the rock block shapes: spherical, cylindrical, and disc-shaped, in nature (Fityus et al 2013;Yu et al 2021). The main forms are shown in Fig.…”

Section: Representation Of the Block Shape And Impact Anglementioning

confidence: 99%

“…The types of spherical form blocks include cubes, spheres, etc. (Yu et al 2021) Cylindrical forms (Fig. 2b).…”

Section: Representation Of the Block Shape And Impact Anglementioning

confidence: 99%

“…The types of disc-shaped blocks include hemispheres, discs etc. (Yu et al 2021) As shown in Fig. 2, in our field research, since it is not easy to assign a form to the natural block used, it is necessary to approximately specify a form to the block.…”

Section: Representation Of the Block Shape And Impact Anglementioning

confidence: 99%

See 3 more Smart Citations

Dynamic response of reinforced concrete sheds against the impact of rock block with different shapes and angles

2022

Self Cite

View full text Add to dashboard Cite

This study aimed to quantitatively identify the influence of the block impact angle and block shape on the impact effect of reinforced concrete RC sheds. The smooth particle hydrodynamic (SPH) method and finite element method (FEM) were coupled and used to solve the simulation difficulty of large deformation of the sand buffer layer. The accuracy of the coupled model was verified by the full-scale test data. Finally, the impact forces and the dynamic responses of the RC shed were analysed, focusing on the effects of the block impact angle and shape. The numerical results show that the coupled SPH-FEM method is effective for simulating how block impacts the RC shed. The block impact angle and shape can signiﬁcantly influence the normal and tangential impact forces. The design of the RC shed based on the assumption of blocks as free-falling spherical projectiles can lead to inaccuracy in some impact scenarios.

show abstract

“…The types of cylindrical form blocks include ellipsoids, prisms, cylinders, etc. (Yu et al 2021) D r a f t Disc-shaped forms (Fig. 2c).…”

Section: Representation Of the Block Shape And Impact Anglementioning

confidence: 99%

“…There are three main types of the rock block shapes: spherical, cylindrical, and disc-shaped, in nature (Fityus et al 2013;Yu et al 2021). The main forms are shown in Fig.…”

Section: Representation Of the Block Shape And Impact Anglementioning

confidence: 99%

“…The types of spherical form blocks include cubes, spheres, etc. (Yu et al 2021) Cylindrical forms (Fig. 2b).…”

Section: Representation Of the Block Shape And Impact Anglementioning

confidence: 99%

Section: Representation Of the Block Shape And Impact Anglementioning

confidence: 99%

See 2 more Smart Citations

Dynamic response of reinforced concrete sheds against the impact of rock block with different shapes and angles

2022

Self Cite

View full text Add to dashboard Cite

show abstract

“…First, the simulation results are compared to the field test results, and the validity of these approaches was verified. Based on these approaches, other influencing factors of the rockfall-barrier system can be analyzed (Gentilini et al 2012), such as the net panel numerical mesh (Castanon-Jano et al 2018), loading geometries (Koo et al 2016;Yu et al 2021), successive impacts (Dugelas et al 2019) and loading positions .…”

Section: Introductionmentioning

confidence: 99%

Investigations of the Rockfall Impacts on the Flexible Protective Barriers under Seismic Loading

Liu

2021

Preprint

View full text Add to dashboard Cite

Rockfall triggered by earthquakes can cause severe infrastructure losses and even fatalities. The flexible protective barrier is an efficient rockfall protection system that has been widely used against rockfall. This studyproposed a novel approach to simulate a field test of rockfall impacting the flexible barrier, and the simulation results showed an excellent match with the field test results. Based on this approach, the seismic loading was applied to the numerical model, and four types of seismic loading were adopted, e.g., non-seismic, x-directional seismic, y-directional seismic, and z-directional seismic. This study aims at investigating the dynamic behavior of the flexible protective barrier under different seismic loading during the rockfall impact process. The following findings can be obtained from the simulation results. First of all, the seismic loading can increase the maximum elongation and decrease the final elongation of the flexible protective barrier comparing to non-seismic loading. Second, the largest deformation area of the protective barrier is at the diagonal position when x-directional seismic loading was applied, which is at the vertical bisector position when y-directional and z-directional seismic loading was applied. Third, the maximum elongation of the protective barrier decreased with the increasing seismic wave period. But in general, the amplitude and period of seismic waves have negligible effects on the elongation, maximum normal stress, and maximum shear stress of the flexible protective barrier.

show abstract

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

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.

show abstract

Dynamic response of flexible rockfall barriers with different block shapes

Cited by 18 publications

References 20 publications

Dynamic response of reinforced concrete sheds against the impact of rock block with different shapes and angles

Dynamic response of reinforced concrete sheds against the impact of rock block with different shapes and angles

Investigations of the Rockfall Impacts on the Flexible Protective Barriers under Seismic Loading

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

Contact Info

Product

Resources

About