Progressive Collapse Assessment of Steel Moment-Resisting Frames Using Static- and Dynamic-Incremental Analyses

Kiakojouri, Foad; Sheidaii, Mohammad Reza; Biagi, Valerio De; Chiaia, Bernardino

doi:10.1061/(asce)cf.1943-5509.0001425

Cited by 32 publications

(11 citation statements)

References 33 publications

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“…In addition, this approach could be extended to other types of structures into which it is possible to identify a failure mechanism, say in steel frames or in timber structures. The possibility of including column removal time and strain rate effects into the present simplified formulation is still an open question [30] and need to be addressed in the future.…”

Section: Discussionmentioning

confidence: 99%

“…Finally, in the last step, a sudden downward force of magnitude equal to N, is applied at the node and the nonlinear dynamic response of the system is measured, Figure 1c. The response of the frame structure under the sudden downward force can be studied through various numerical techniques [30].…”

Section: Modelling Sudden Column Removal On Frame Structuresmentioning

confidence: 99%

“…Inelastic elements with plastic hinges according to the model proposed by Scott and Fenves [46] are adopted in the FE model. The dynamic column removal is simulated with the application of an opposite force on the node onto which the replacement force acts [1,6,30]. In the simulations that are reported in the following, the force application starts at 0.1 s and lasts 0.01 s (column removal time), that is, it can be considered as a sudden column removal.…”

Section: Comparison With Numerical Simulationsmentioning

confidence: 99%

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A Simplified Method for Assessing the Response of RC Frame Structures to Sudden Column Removal

et al. 2020

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Column loss is a type of damage that can occur in frame structures subjected to explosions or impacts. The response of such structures largely depends on the capacity of the assembly of elements and on the inertia effects due to the sudden nature of the phenomenon. Frame structures are able to develop various resisting mechanisms that prevent the collapse to progress. The assessment of the robustness often requires complex and detailed numerical modelling. For the preliminary design of a robust frame, simplified methods to assess the effectiveness of the redistribution of the loads after the removal of a member are welcome. In the present paper, an approach based on the idealisation of the damaged structure into a single degree-of-freedom system with an elastic-plastic compliance law is proposed. The output of the method is the dynamic response of a target point, which can serve for assessing the residual safety of the structure. Comparing the obtained results with the outputs of a more sophisticated FE (Finite Elements) analysis, a satisfying accuracy is found.

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Section: Discussionmentioning

confidence: 99%

Section: Modelling Sudden Column Removal On Frame Structuresmentioning

confidence: 99%

Section: Comparison With Numerical Simulationsmentioning

confidence: 99%

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A Simplified Method for Assessing the Response of RC Frame Structures to Sudden Column Removal

et al. 2020

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“…(2021) 3:185 | https://doi.org/10.1007/s42452-021-04230-2 Research Article [12] investigated the collapse behavior of moment resisting frames using static-and dynamic incremental analyses. There important parameters including location of column removal, duration of column removal and dynamic amplification factor were taken into account.…”

Section: Sn Applied Sciencesmentioning

confidence: 99%

FEMA P695 methodology for safety margin evaluation of steel moment resisting frames subjected to near-field and far-field records

2021

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This study presents the impact of near-field and far-field earthquakes on the seismic design of Intermediate Moment Resisting Frame (IMRF) and Special Moment Resisting Frame (SMRF) structures through FEMA (Federal Emergency Management Agency) P695 methodology to highlight the importance of probabilistic collapse as well as seismic performance factors of these structures. The purpose of this study is to investigate the collapse performance of steel intermediate and special moment resisting frame systems as the most common structural systems in urban areas in order to assess the seismic performance factors used for the design using nonlinear static and dynamic analysis methods. In this regard, as the representatives of low-rise to high-rise buildings, archetypes with 5-, 10- and 15- story of intermediate and special moment resisting frames are designed and then the nonlinear models are developed in OpenSees software. Nonlinear static analyses are performed to assess the overstrength and ductility of these systems. The effects of near-field and far-field ground motions on these frames are investigated through incremental dynamic analysis. These analyses are performed with 22 far-field and 20 near-field ground motion records using FEMA P695 methodology. The results show that near-field earthquakes have serious impacts on the collapse probability of structures. The superiority of special moment resisting frame over intermediate moment resisting frame is quantified in terms of safety margin and median collapse capacity under both near-field and far-field earthquakes. Finally, the results indicate that the response modification factors introduced in seismic design code are acceptable for intermediate moment resisting frame and special moment resisting frame under far-field ground motions. However, in the near-field sites while SMRF system meets the requirements of FEMA P695 methodology, the IMRF system does not satisfy these criteria.

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“…Kordbagh and Mohammadi [17] studied the influence of seismicity level and height of building on the progressive collapse resistance of steel frames. Kiakojuri et al [18] studied progressive collapse of steel moment-resisting frames using static and dynamic incremental analyses. Although there have been numerous investigations regarding progressive collapse in various structures, some topics have remained overlooked, one of which is the effect of irregularity in height in assessing the progressive collapse potential in mid-rise and high-rise buildings.…”

Section: Introductionmentioning

confidence: 99%

Progressive collapse scenario in steel structures with irregularity in height

2021

JCE

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Sudden removal of load-bearing elements such as columns in engineering structures, and lack of sufficient capacity to withstand the overload caused by removal of these elements can cause damage and Progressive Collapse (PC) in structures. Therefore, the effect of sudden column removal and structural capacity against PC scenarios in medium and high-rise buildings is investigated in this study. The irregularity in height has a great influence on lateral behaviour of structures and it affects the design of cross-sections. Various sudden column removal scenarios are investigated in this research for steel structures with and without irregularity in height. To assess the effects of sudden column removal, the Alternate load Path Method (APM) and Nonlinear Dynamic Analysis (NDA) are utilized. In addition, a Nonlinear Static Analysis (NSA) is performed to investigate the capacity of structures against the PC phenomenon. Using OpenSees software, 10-, 15- and 20-storey structures with three distinct irregularity types are analysed during four different column removal scenarios. The results are presented in the form of static and dynamic nonlinear curves. The results indicate that making geometric irregularity in height in the sudden column removal scenario can cause the reduction of capacity and growth of the structural response in comparison to the structure with regularity in height. Moreover, the capacity of structures increases and the dynamic response declines by increasing the number of elements in the structures.

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Progressive Collapse Assessment of Steel Moment-Resisting Frames Using Static- and Dynamic-Incremental Analyses

Cited by 32 publications

References 33 publications

A Simplified Method for Assessing the Response of RC Frame Structures to Sudden Column Removal

A Simplified Method for Assessing the Response of RC Frame Structures to Sudden Column Removal

FEMA P695 methodology for safety margin evaluation of steel moment resisting frames subjected to near-field and far-field records

Progressive collapse scenario in steel structures with irregularity in height

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