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

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

doi:10.1016/j.engstruct.2007.01.017

Cited by 52 publications

(19 citation statements)

References 9 publications

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“…Several studies concerning RC elements have shown the reliability of this program (Barbosa and Ribeiro, 1979;Buyukkaragoz and Kopraman, 2008;Delhomme et al, 2007;Hu et al, 2011;Kachlakev et al, 2001;Ozcan et al, 2009). For the analytical models, specimen size, materials properties, loading programme and boundary conditions were formed in accordance with the criteria in the experimental studies.…”

Section: Generalmentioning

confidence: 98%

Investigation into the behaviour of shear stud applied weak column–strong beam connections

Büyükkaragöz¹,

Arslan²

2014

Magazine of Concrete Research

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The behaviour of weak column-strong beam reinforced concrete (RC) connections with the application of specially manufactured steel plates with shear studs (SPwSS) under cyclic loads was investigated, both experimentally and analytically. The aim of the work was to improve the seismic behaviour of the joint by using SPwSS. In total, 15 fullscale RC connections were tested under reversed-cyclic lateral loads. The specimens were formed as an exterior joint of a frame. The compressive strength of concrete, the width of the shear stud heads and their spacing on the steel plates were adopted as the main test parameters, whose effects on the weak columns were investigated. It was observed that plastic hinges occurred at the beams after SPwSS application. The obtained experimental results were compared with analytical results and similarities in the behaviours were observed.

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Section: Generalmentioning

confidence: 98%

Investigation into the behaviour of shear stud applied weak column–strong beam connections

Büyükkaragöz¹,

Arslan²

2014

Magazine of Concrete Research

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“…(16) it is obvious that confining pressure will restrain the axial strain. When N =0 and N+1 =0 (without stress relaxation), Eqn.…”

Section: Constitutive Relationship Of Combination Between Microstructmentioning

confidence: 99%

Constitutive model of rock based on microstructures simulation

Liang

Liu

et al. 2008

J. Cent. South Univ. Technol.

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The constitutive model of rock can be built by mechanics elements because there are many kinds of damages in rock under varied loads. It is resumed that rock contains many microstructures and a structure of Bingham. The microstructure consists of two embranchments that are the unit of a spring and a gliding slice in series and the unit of a spring and a cementation bar in series, the two units connect each other in parallel. These microstructures are arranged disorderly or in the order of a certain state. A certain distribution of microstructures represents one type of rock. Two kinds of rock's constitutive relationship were deduced by using the model. One is the model in which many parallel microstructures and a structure of Bingham connect in series. And it is used to homogeneous rock. The other is the model in which many microstructures and a structure of Bingham connect in series. And it is used to the rock with much crack or microcrack in a certain direction. The two kinds of constitutive relationship were verified by the studied cases. The constitutive model of rock built by using mechanics elements is verified to be reasonable. Moreover, different types of rocks may be described with mechanics elements with different distributions.

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“…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

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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>

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

Cited by 52 publications

References 9 publications

Investigation into the behaviour of shear stud applied weak column–strong beam connections

Investigation into the behaviour of shear stud applied weak column–strong beam connections

Constitutive model of rock based on microstructures simulation

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

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