The application of 3-dimensional dda with a spherical rigid block for rockfall simulation

Mei, Yang; Fukawa, Tadashi; Ohnishi, Y.; Nishiyama, Satoshi; Miki, Shigeru; Hirakawa, Yutaka; Mori, Satoshi

doi:10.1016/j.ijrmms.2004.03.108

Cited by 10 publications

(7 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As such, there is an interdependence between the direction of the rockfall trajectory in the x,y domain, the kinematics of the falling rock, its rebound positions and heights and if included, impacts on trees. Examples of such models are EBOUL-LMR (Descoeudres and Zimmermann, 1987), STONE (Guzzetti et al, 2002), Rotomap (Scioldo, 2006), DDA (Yang et al, 2004), STAR3-D (Dimnet, 2002), HY-STONE and Rockyfor3-D , RAMMS:Rockfall (Christen et al, 2007); Rockfall-Analyst (Lan et al, 2007), PICUS-ROCKnROLL (Rammer et al, 2007;Woltjer et al, 2008) or as shown in Masuya et al (1999). The major advantage of 3-D models is that diverging and converging effects of the topography, as well as exceptional or surprising trajectories, i.e., those that are less expected at first sight in the field, are clearly reflected in the resulting maps.…”

Section: -D Rockfall Trajectory Modelsmentioning

confidence: 99%

See 1 more Smart Citation

Rockfall characterisation and structural protection – a review

Volkwein

Schellenberg²,

Labiouse

et al. 2011

Nat. Hazards Earth Syst. Sci.

351

200

View full text Add to dashboard Cite

Abstract. Rockfall is an extremely rapid process involving long travel distances. Due to these features, when an event occurs, the ability to take evasive action is practically zero and, thus, the risk of injury or loss of life is high. Damage to buildings and infrastructure is quite likely. In many cases, therefore, suitable protection measures are necessary. This contribution provides an overview of previous and current research on the main topics related to rockfall. It covers the onset of rockfall and runout modelling approaches, as well as hazard zoning and protection measures. It is the aim of this article to provide an in-depth knowledge base for researchers and practitioners involved in projects dealing with the rockfall protection of infrastructures, who may work in the fields of civil or environmental engineering, risk and safety, the earth and natural sciences.

show abstract

Section: -D Rockfall Trajectory Modelsmentioning

confidence: 99%

“…There are also models that use deterministic approaches for calculating the rockfall rebound. These models use mostly a discrete element method (Cundall, 1971), such as the Discontinuous Deformation Analysis (Yang et al, 2004) or percussion theory (Dimnet, 2002).…”

Section: Calculation Approachesmentioning

confidence: 99%

Rockfall characterisation and structural protection – a review

Volkwein

Schellenberg²,

Labiouse

et al. 2011

Nat. Hazards Earth Syst. Sci.

351

200

View full text Add to dashboard Cite

show abstract

“…Analytical procedures for the mathematical description of rockfall phenomena have been established by several researchers and these procedures have led to the development of various types of statistical forecasting procedures (Descoudres and Zimmermann, 1987;Giani, 1992;Azzoni et al, 1995;Agliardi and Crosta, 2003;Yang et al, 2004). When the best position with reference to the interception percentage of the trajectories, the corresponding maximum bouncing height and the kinetic energy have been established, a suitable device can be chosen.…”

Section: Introductionmentioning

confidence: 99%

Technical Note: Design of rockfall net fences and the new ETAG 027 European guideline

Peila

Ronco

2009

Nat. Hazards Earth Syst. Sci.

View full text Add to dashboard Cite

Abstract. The need for protection against rockfall has led to the development of different types of technological solutions that are able to both prevent blocks from detaching from rock walls and to control, intercept or deviate the blocks during movement. Of the many devices that are able to intercept and stop a block, one of the most frequently used is net fence. Many different types of full-scale tests have been carried out, with different test site geometries and procedures to study their behaviour and to certify these devices. This has led to a series of data and information that are not easy to compare. The recent endorsement, by the European Organization for Technical Approvals (EOTA), of a European Technical Approval Guideline (ETAG), which defines how to test and assess the performance of a net fence, is therefore a great innovation that will change both the market and the design procedures of these devices. The most important innovations introduced by this new guideline are here presented and discussed and a net fence design procedure for protection against rockfall is provided.

show abstract

“…Examples of such models are EBOUL-LMR (Descouedres and Zimmermann, 1987), STONE (Guzzetti et al, 2002), Rotomap (Scioldo, 2006), DDA (Yang et al, 2004), STAR3D (Dimnet, 2002), Rockyfor3D , HY-STONE (Agliardi et al, 2009), and PICUS-ROCKnROLL (Rammer et al, 2010). As such, there is an interdependence between the direction of the rockfall trajectory in the x,y domain, the kinematics of the falling rock, its rebound positions and heights and, if included, impacts on trees.…”

Section: Modeling Of Rockfallmentioning

confidence: 99%

“…Details on these coefficients are among others presented in Guzzetti et al (2002). Cundall, 1971), such as the discontinuous deformation analysis (Yang et al, 2004) or the percussion theory (Dimnet, 2002). The models that use these kinds of coefficients generally apply a probabilistic approach for choosing the parameter values used for the actual rebound calculation.…”

Section: Modeling Of Rockfallmentioning

confidence: 99%