Parametric analysis of Istanbul’s ring road viaduct for three levels of seismic load

Grębowski, Karol; Hirsz, Marta; Wilde, Krzysztof; Nadolny, Adam

doi:10.1201/b20057-46

Cited by 2 publications

(2 citation statements)

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“…The energy release rates of glass are 10 N/m for The assumed wall for the experiment was rectangular in shape, with a width of 2200 mm and height of 2200 mm, according to the actual dimension of the glazing of the Maritime Museum in Barcelona from the Medieval period. The numerical analysis of the destruction prediction for the wall, built entirely of laminated VSG glass reinforced with PVB foil spacers, was carried out in the LS-DYNA software [65][66][67]. The FE model of the laminated glass wall utilized the MAT_32-LAMINATED_GLASS material, with assigned new parameters as provided in Table 2.…”

Section: Crash Tests Of a Vehicle Impact Into A Wall Of Laminated Glassmentioning

confidence: 99%

Architectural and Urban Planning Solutions for the Protection of Heritage Buildings in the Context of Terrorist Attacks: Following the Example of Passive Protection Systems

Grębowski

Wróbel²

2022

Buildings

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Events in recent years showing numerous terrorist attacks raise awareness regarding the necessity of considering the safety of heritage buildings. The analysis of available data allows us to conclude that it is not possible to fully prevent terrorist attacks. On the other hand, it is possible to minimize the impact of such incidents through proper design of passive protection system (PPS) components. One possible architectural solution to be deployed as a passive defense system is laminated glass panel walls. The study presented in this article is innovative, considering there are no current standard documents or recommendations to determine the conditions of destruction as well as the methods of testing the strength of glass components used in laminated glass panel walls under vehicle impact. The present work represents the material used in PVB interlayers using the Mooney–Rivlin constitutive model, which correctly describes the non-linear characteristics of PVB. Based on the obtained results, new parameters of PVB laminated glass exposed to vehicle impact were developed. The newly developed parameters underwent quality verification through a comparison of results from experimental studies and numerical simulations. Finally, the strength of laminated glass panel walls was subject to evaluation, considering the amount and thickness of individual VSG glass layers and the number of PVB interlayers at ground floor level of a heritage building with high susceptibility to terrorist attacks. The newly developed parameters of laminated glass may be implemented as a premade input .mat file for the material available in the KEYWORD database under the name MAT_32-LAMINATED_GLASS in the LS-DYNA software.

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Section: Crash Tests Of a Vehicle Impact Into A Wall Of Laminated Glassmentioning

confidence: 99%

Architectural and Urban Planning Solutions for the Protection of Heritage Buildings in the Context of Terrorist Attacks: Following the Example of Passive Protection Systems

Grębowski

Wróbel²

2022

Buildings

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“…23 The elastic theory method should be applied if and only if it is proved beyond doubt that the material (reinforcement in the case of reinforced concrete supports) is not capable of reaching sufficient plasticity and the cross-section of the support element in critical sections has sufficient freedom of rotation to form a plastic hinge. If these conditions are not met, plastic analysis is necessary for seismic design, see Gre ˛bowski et al 24,25 Plastic analysis methods lead to optimal design by using plastic reserves in the form of plastic hinges.…”

Section: Indroductionmentioning

confidence: 99%

Finite element modeling of plastic hinges based on ductility demand‐capacity method using nonlinear material for dynamic analysis

Grębowski

Wilde

Miśkiewicz

2022

Numerical Meth Engineering

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The article discusses modeling plastic hinges in reinforced concrete intermediate supports using finite elements methods. The ductility demand-capacity method was used to determine the geometrical parameters of cross-section plasticization zones, their ability to move and rotate, as well as their ductility. Due to the varied geometry and stiffness of the supports and their nonlinear behavior under dynamic load, this method was concluded to be imperfect. Therefore, an improved algorithm was proposed by determining the main parameters of plastic hinges depending on the degree of concrete degradation according to Lubliner's assumptions. The new algorithm has been implemented in the form of mathematical equations. It was subsequently used, at the structure design stage, to perform numerical calculations based on the finite element method.

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Parametric analysis of Istanbul’s ring road viaduct for three levels of seismic load

Cited by 2 publications

References 1 publication

Architectural and Urban Planning Solutions for the Protection of Heritage Buildings in the Context of Terrorist Attacks: Following the Example of Passive Protection Systems

Architectural and Urban Planning Solutions for the Protection of Heritage Buildings in the Context of Terrorist Attacks: Following the Example of Passive Protection Systems

Finite element modeling of plastic hinges based on ductility demand‐capacity method using nonlinear material for dynamic analysis

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