Investigating the Progressive Collapse of Steel Frames Considering Vehicle Impact Dynamics

Mirkarimi, Seyed Pooria; Dehcheshmeh, Esmaeil Mohammadi; Broujerdian, Vahid

doi:10.1007/s40996-022-00927-5

Cited by 5 publications

(3 citation statements)

References 16 publications

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“…The deformation instability of the internal structure of the plastic hinge is used to dissipate energy, increasing the safety reserve and multi-degree of freedom energy release of the actual support structure. Therefore, plastic hinges are widely used in practical engineering, such as in building anti-shock design, automobile anti-collision design and aviation anti-collision design [ 195 , 196 , 197 , 198 , 199 ]. Yuan et al [ 200 , 201 ] proposed a new performance design method for prefabricated beam-column joints and artificial controllable plastic hinges (ACPH).…”

Section: Engineering Applications Of Deformation Instabilitymentioning

confidence: 99%

Theory, Method and Practice of Metal Deformation Instability: A Review

Wan

Yao

et al. 2023

Materials

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Deformation instability is a macroscopic and microscopic phenomenon of non-uniformity and unstable deformation of materials under stress loading conditions, and it is affected by the intrinsic characteristics of materials, the structural geometry of materials, stress state and environmental conditions. Whether deformation instability is positive and constructive or negative and destructive, it objectively affects daily life at all times and the deformation instability based on metal-bearing analysis in engineering design has always been the focus of attention. Currently, the literature on deformation instability in review papers mainly focuses on the theoretical analysis of deformation instability (instability criteria). However, there are a limited number of papers that comprehensively classify and review the subject from the perspectives of material characteristic response, geometric structure response, analysis method and engineering application. Therefore, this paper aims to provide a comprehensive review of the existing literature on metal deformation instability, covering its fundamental principles, analytical methods, and engineering practices. The phenomenon and definition of deformation instability, the principle and viewpoint of deformation instability, the theoretical analysis, experimental research and simulation calculation of deformation instability, and the engineering application and prospect of deformation instability are described. This will provide a reference for metal bearing analysis and deformation instability design according to material deformation instability, structural deformation instability and localization conditions of deformation instability, etc. From the perspective of practical engineering applications, regarding the key problems in researching deformation instability, using reverse thinking to deduce and analyze the characteristics of deformation instability is the main trend of future research.

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Section: Engineering Applications Of Deformation Instabilitymentioning

confidence: 99%

Theory, Method and Practice of Metal Deformation Instability: A Review

Wan

Yao

et al. 2023

Materials

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“…The input data, designated for analyses of impact effects, are employed to track the history of structure loading and evaluate the probability of the building frame collapse in case of an impact on a car. The effect of this impact [9], causing a progressive collapse of the building steel frame, was evaluated using the following methods: selection of impact parameters, use of the impact equation when a nonlinear dynamic analysis was made without column removal, and analysis of the impact that triggered the column removal. The latter approach is the most realistic and problematic one for the structure in terms of deformations and the number of plastic hinges.…”

Section: Type Of Loadingmentioning

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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“…From a research perspective, multiple efforts have been spent to address the progressive collapse mechanisms of various structural typologies. Numerical investigations have been presented in [15][16][17][18][19] to study the progressive collapse of steel structures under the sudden column removal scenario, based on three-dimensional FE models. Tsitos et al [20] examined the typical processes of progressive collapse in terms of nonlinear or linear and dynamic or quasi-static analyses, by using a combination of dead and live loads.…”

Section: Introductionmentioning

confidence: 99%

Nonlinear Dynamic Assessment of a Steel Frame Structure Subjected to Truck Collision

Safari Honar,

Broujerdian,

Mohammadi Dehcheshmeh

et al. 2023

Buildings

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The progressive collapse of structures subjected to a truck collision with ground floor columns is numerically investigated in this paper. For this purpose, a four-story steel building with a dual system (including an intermediate steel moment frame, with a special concentric steel bracing system in the longitudinal (x) direction, and an intermediate steel moment frame in the transversal (y) direction) is considered. The structure, which was designed according to AISC, ASCE7 and 2800 Iranian seismic standard guidelines, is located in seismic-prone area and subjected to eight different truck collision scenarios. The nonlinear dynamic analyses carried out in ABAQUS on a three-dimensional finite element (FE) numerical model include variations in collision features (i.e., mass and speed of the truck, the height of collision point), and are used to support the analysis of expected damage. The presented results confirm that increasing the truck mass and speed increases damage entity for the column and structure. Several influencing parameters are involved in damage location and progressive evolution. The height of the collision point from the ground also significantly affects the magnitude of structural damage, especially in terms of stress peaks in the panel zones for the target column. Finally, the perimeter columns are more vulnerable to impact than corner columns, in structures with dual system as with the examined four-story building. The presence of a bracing system parallel to the impacting vehicle can in fact reduce the deformation—and thus the expected damage—of the adjacent target column. Most importantly, it is shown that the numerically reproduced collision scenarios (and the associated damage configurations) based on truck impact are significantly more severe than those artificially created based on the conventional column removal method (i.e., alternate path (AP) analysis approach), which confirms the importance of more sophisticated numerical calculation procedures to investigate and assess the progressive collapse of structures.

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Investigating the Progressive Collapse of Steel Frames Considering Vehicle Impact Dynamics

Cited by 5 publications

References 16 publications

Theory, Method and Practice of Metal Deformation Instability: A Review

Theory, Method and Practice of Metal Deformation Instability: A Review

Ensuring the Safety of Steel Moment Frames Subjected to Uncertain Impacts

Nonlinear Dynamic Assessment of a Steel Frame Structure Subjected to Truck Collision

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