Behavior of a structurally dissipating rock-shed: experimental analysis and study of punching effects

Delhomme, Fabien; Mommessin, Michel; Mougin, Jean-Pierre; Perrotin, Pascal

doi:10.1016/j.ijsolstr.2004.12.008

Cited by 64 publications

(32 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…During its fall, the block can slightly rotate and impact the slab with different slants (the influence of the slanting of the block is discussed in Ref. [8]). This article includes only tests in which the block did not rotate and hit the slab with a face.…”

Section: Methodsmentioning

confidence: 99%

Simulation of a block impacting a reinforced concrete slab with a finite element model and a mass-spring system

Delhomme

Mommessin

Mougin

et al. 2007

Engineering Structures

Self Cite

View full text Add to dashboard Cite

Section: Methodsmentioning

confidence: 99%

Simulation of a block impacting a reinforced concrete slab with a finite element model and a mass-spring system

Delhomme

Mommessin

Mougin

et al. 2007

Engineering Structures

Self Cite

View full text Add to dashboard Cite

“…e equivalent diameter of the hoop, intersection, and longitudinal support cables is 16 mm, and their effective cross-sectional area is about 90.96 mm 2 . e equivalent diameter of the horizontal cable is 18 mm with an effective cross-sectional area of about 115.25 mm 2 .…”

Section: Shock and Vibrationmentioning

confidence: 99%

“…e reinforced concrete rock shed is widely used for rockfall protection in China and other countries (Figure 1). However, the impact load on these structures is large under the impact of rock block, the volume and the weight of the structures would be increased, and the large deep burial and large section foundation would be needed [2][3][4][5]. For these reasons, the construction is usually very difficult and needs increasing the costs.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Finite Element Analysis of a New Type Flexible Rock Shed under the Impact of Rock Block and Improving the Design

Cui

Wang

2018

Shock and Vibration

View full text Add to dashboard Cite

A 1:1 flexible rock shed made of flexible nets and steel-vaulted structure is manufactured and tested for functional evaluation with impact experiment previously. To further discuss the performance of this structure under the impact of rockfalls and to improve the design, numerical simulation for this structure is carried out in this paper. Firstly, the simplified numerical models for characterizing the mechanical behavior of the ring nets and wire meshes are deduced. Then, a detailed finite element model for the flexible rock shed is developed for impact analysis. By comparing the experimental data, the numerical model for the flexible rock shed is shown to be reliable in predicting the dynamic behavior of the flexible rock shed. Finally, combined with the numerical simulation results and experimental results, an improved design is presented, and the numerical simulation results show that the energy dispersion in the improved design of the rock shed is more equalized, and damages on the steel-vaulted structure are much improved.

show abstract

“…However, this proposed system remains difficult to be repaired after a damage. Mougin et al [4] and Delhomme et al [5,6] developed a new rock-shed made of reinforced concrete slabs held up by specially designed supports that act as expendable fuses to absorb the kinetic energy of the falling rocks. The energy is dissipated directly into the reinforced concrete slab or into the fuse supports, and no longer into a cushion layer.…”

Section: Introductionmentioning

confidence: 99%

Falling weight impact test of a new-type flexible rock-shed

et al. 2018

View full text Add to dashboard Cite

A new concept of a flexible rock-shed is presented for protection of the railway from falling rocks. The flexible rock-shed is made of flexible nets connected by specific spring spacer bars to an array of reinforced concrete portable frames which are linked by a longitudinal steel tube truss. To evaluate the performance of the flexible rock-shed, experimental and numerical studies are carried out in the present study. Impact tests are conducted on a full-scale partial model of the prototype structure when it is subjected to a falling block of 340 kg. The impact time interval, maximum deflection of the flexible net, tensile forces in the supporting ropes, and axial strains of spring spacer bars are recorded. To further examine the dynamic behavior of the flexible rock-shed, numerical simulations are also carried out by using the explicit finite element code ANSYS/LS-DYNA. It is found that the numerical results coincide well with the experimental data and both the numerical and experimental studies reveal that the structure can withstand impact energy of 50 kJ with all the materials working in the elastic range. The structural details are improved and the basis for the design and construction of similar structures in the future is provided.<br>

show abstract

Behavior of a structurally dissipating rock-shed: experimental analysis and study of punching effects

Cited by 64 publications

References 11 publications

Simulation of a block impacting a reinforced concrete slab with a finite element model and a mass-spring system

Simulation of a block impacting a reinforced concrete slab with a finite element model and a mass-spring system

Dynamic Finite Element Analysis of a New Type Flexible Rock Shed under the Impact of Rock Block and Improving the Design

Falling weight impact test of a new-type flexible rock-shed

Contact Info

Product

Resources

About