Single and multi-objective optimization of steel moment-resisting frame buildings under vehicle impact using evolutionary algorithms

Sadeghi, Abbasali; Kazemi, Hamid; Samadi, Maysam

doi:10.1007/s41024-021-00117-2

Cited by 7 publications

(4 citation statements)

References 44 publications

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“…Similar spots of accidental impacts will be considered in this article. The authors of [17] studied bolted beam-column connections on flanges, in the case when welding holes had different shapes. It is shown that connections, allowing the frame to pass into the state of catenary deformation, are preferable.…”

Section: Stress-strain State Of Joints and Elementsmentioning

confidence: 99%

Ensuring the Safety of Steel Moment Frames Subjected to Uncertain Impacts

Alekseytsev

2023

Buildings

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The article addresses the problem of safety evaluation of steel moment frames of civil buildings, e.g., warehouses, shops, garages, and multistory industrial buildings on deformable soil in the relevant case of an emergency impact. The case of accidental emergency impacts is considered when such parameters as the point, direction, and intensity of an impact cannot be predetermined. Such impacts are not expected to trigger the progressive collapse of currently implemented design solutions and the whole structure must maintain the property of survivability. To evaluate this property, several calculations are to be made in the quasi-static statement to identify the stress–strain state under the most dangerous accidental impacts. Further, final calculations are to be made in the dynamic statement. In this case, the problem of search is solved using the criterion of minimizing the integral safety margin of structural elements in a steel moment frame design. Calculations prevent the frame stability loss. The calculation is performed in the quasi-static statement using models made in compliance with the deformation theory of plasticity, while the calculation in the dynamic statement takes into account the associated plastic flow rule. The proposed procedures allow for designing steel moment frames that are resistant to accidental emergency impacts. Impact loading is analysed as pulse loading, which is statically equivalent to the dynamic effect of an inelastic impact of a stiff body on a structural system. The design and the efficiency evaluation of a steel moment frame of a two-story building are considered.

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Section: Stress-strain State Of Joints and Elementsmentioning

confidence: 99%

Ensuring the Safety of Steel Moment Frames Subjected to Uncertain Impacts

Alekseytsev

2023

Buildings

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“…Also, past studies about steel moment resisting frames (SMRFs) are presented in the following. The fragility behavior of SMRFs is evaluated subjected to vehicle impact by Sadeghi et al [21] and in another research by Sadeghi et al [22], the weight of SMRFs is optimized under vehicle collision by using optimization algorithms. Saberi et al [23] assessed the effect of fire on SMRFs.…”

Section: Introductionmentioning

confidence: 99%

Probabilistic investigation of the pounding effect in steel moment resisting frames with equal and unequal heights

Sadeghi,

Kazemi,

Razmkhah

et al. 2024

Res. Eng. Struct. Mat.

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In this research, the influence of the pounding phenomenon of two adjacent steel moment resisting frames (SMRFs) with 2 and 5-story with an intermediate ductility is investigated by considering equal and unequal heights under seismic excitations. In this way, two scenarios are applied. The first and second scenarios are related to the pounding of two SMRFs with an equal height (both frames with 2-story) and an unequal height (2-story and 5-story frames), respectively. In the following, at first, sensitivity analysis is conducted by the Monte Carlo simulation (MCS) method. Then, the collapse performance of the studied SMRFs is evaluated by incremental dynamic analysis (IDA), and fragility curves under 14 far-fault records and also, the failure probability is predicted by the Kriging meta-model. The results of sensitivity analysis indicate that the yield strength of cross-sections and dead load were the greatest effect on failure probability computation. Also, in the statistical level of 50%, the collapse probability of SMRFs with an equal height is 17% compared to the SMRFs with an unequal height. Also, the results of the Kriging meta-model show that the failure probability is increased by 65% in an unequal height versus an equal height.

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“…Although the incidence of railway collision accidents is low, due to the large number of passengers, the consequences of an accident will be very dire. In recent years, the global railway traffic accident rate has been on the rise, and high speed and safety are an important issue faced by all countries in the world [3].…”

Section: Introductionmentioning

confidence: 99%

Numerical simulation of heavy rail transit vehicle collision and analysis of collision force characteristics

Zhang¹,

Li²

2023

J. vibroeng.

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The collision force of a heavy rail transit vehicle hitting a bridge pier is affected by many factors. In order to investigate the characteristics of the collision force when a heavy rail transit vehicle hits a bridge, the finite element software LS-DYNA is used to simulate the impact of a heavy rail transit vehicle on a bridge. The influence of the vehicle speed of heavy rail transit vehicles, the strength of bridge pier concrete, the spacing of pier stirrups, the ratio of pier stirrup reinforcement, and the eccentric distance between the vehicle and the bridge pier on the characteristics of the collision force. The simulation analysis results show that the total deformation frequency around the impact point of the bridge pier and the heavy rail transit vehicle decreases as the distance from the impact point increases, and the deformation frequency in the vicinity of the impact point is the largest. The speed of the heavy rail transit vehicle, the concrete strength of the bridge pier, the reinforcement ratio of the pier stirrup, the larger the eccentric distance between the vehicle and the bridge pier, and the smaller the spacing between the stirrups, the greater the collision force when the heavy rail transit vehicle hits the bridge pier.

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Single and multi-objective optimization of steel moment-resisting frame buildings under vehicle impact using evolutionary algorithms

Cited by 7 publications

References 44 publications

Ensuring the Safety of Steel Moment Frames Subjected to Uncertain Impacts

Ensuring the Safety of Steel Moment Frames Subjected to Uncertain Impacts

Probabilistic investigation of the pounding effect in steel moment resisting frames with equal and unequal heights

Numerical simulation of heavy rail transit vehicle collision and analysis of collision force characteristics

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