Evaluation of the EDR Performance in Seismic Control of Steel Structures Using Endurance Time Method

Foyouzat, M.A.; Estekanchi, Homayoon E.

doi:10.24200/sci.2016.2162

Cited by 2 publications

(2 citation statements)

References 35 publications

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“…The computational accuracy of this method has been demonstrated in various researches on different engineering structures in the technical literature. For instance, one can refer to the studies performed using this method on estimating the seismic response of conventional building structures, [39][40][41][42] buildings equipped with energy dissipation systems, [43][44][45][46] bridges, [47][48][49][50][51] dams, [52][53][54][55][56] liquid storage tanks, [57][58][59] and unreinforced masonry monuments. [60] In addition, Zeinoddini et al [61] developed the endurance wave analysis method for the analysis of marine structures by adopting this method.…”

Section: Introductionmentioning

confidence: 99%

Efficient seismic risk assessment of irregular steel‐framed buildings through endurance time analysis of consistent fish‐bone model

Amiri

Hosseini

Estekanchi

2021

Structural Design Tall Build

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The seismic risk framework of building structures has been presented to reduce earthquake-induced adverse consequences. In this context, probabilistic analysis of engineering demand parameters (EDPs) is always associated with many uncertainties and high computational demand for use in practical applications. This study has been presented to efficiently estimate the distribution of EDPs in probabilistic seismic risk assessment of irregular steel moment-resisting frames (SMRFs). For this purpose, the incorporation of the consistent fish-bone (CFB) model and the endurance time (ET) analysis method has been used. The proposed method (i.e., CFB-ET) has a substantial impact on reducing the complexities of the new generation of performance-based earthquake engineering (PBEE) by significantly reducing the degrees of freedom (DOFs) of the original building and the number of required nonlinear time history analyses (NLTHAs). The efficiency of the proposed method has been evaluated using three 3-, 9-, and 20-story SMRFs irregular in bay lengths and three other SMRFs with the same number of stories but irregular in height. In this evaluation, the maximum structural response at all seismic intensity levels up to the collapse stage and also the structural response profile along the building height at service-level earthquake (SLE), designbased earthquake (DBE), and maximum credible earthquake (MCE) seismic intensity levels have been investigated. Next, the efficiency of the proposed method in seismic risk assessment is investigated by using seismic fragility and vulnerability curves. The results of these evaluations have been compared with the full incremental dynamic analysis (IDA) of the full DOF model of the building (i.e., SMRF-IDA) under 44 far-field ground motions of FEMA P-695 in terms of computational accuracy and effort. Furthermore, a new approach to estimating the dispersion of the structural response in the ET method has been proposed, whose efficiency has been investigated in the abovementioned evaluations. The results show that the proposed method allows for using the new generation of PBEE in engineering applications by significantly reducing computational demand and having sufficient accuracy in the seismic assessment process.

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Section: Introductionmentioning

confidence: 99%

Efficient seismic risk assessment of irregular steel‐framed buildings through endurance time analysis of consistent fish‐bone model

Amiri

Hosseini

Estekanchi

2021

Structural Design Tall Build

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“…They used the genetic algorithm in their research to optimize the structure. Foyouzat and Estekanchi [46] investigated the seismic performance of steel structures equipped with energy dissipating devices using endurance time method. Amouzegar et al [47] optimized the damper properties in structures using incremental dynamic analysis and endurance time method.…”

Section: Introductionmentioning

confidence: 99%

The application of endurance time method for optimum seismic design of steel moment-resisting frames using the uniform deformation theory

Miri

Riahi

Mahmoudy

2020

NMCE

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The optimum seismic design of structures is one of the biggest issues for engineers to build resistant and economic structures. In this research, the application of the endurance time method in optimum performance design of steel moment-resisting frames using the uniform deformation method is evaluated. First, three steel moment-resisting frames with 3, 7 and 12 stories are considered. After that, the structures are optimized by endurance time method analysis and the uniform deformation theory, under a series of acceleration functions. Also, results are compared with the results of time history analysis based on earthquakes. The results revealed that endurance time method and time history analysis of earthquakes at low and moderate seismic hazard levels are well matched, while this adjustment does not exist for high seismic hazard level. In addition, the optimum structure at one hazard level does not lead to optimum structure in other hazard levels. To have the best performance at different hazard levels, the frames should be optimized at the moderate seismic hazard level. In order to optimize the structure at all seismic hazard levels, the GAP dampers can be used. These dampers should be effective after a specified drift at the lower seismic hazard level. In addition, the best values for convergence power of the uniform deformation method are between 0.05 to 0.15 for this purpose. By using such dampers, it is possible to have uniform drift distribution at different seismic hazard levels.

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Evaluation of the EDR Performance in Seismic Control of Steel Structures Using Endurance Time Method

Cited by 2 publications

References 35 publications

Efficient seismic risk assessment of irregular steel‐framed buildings through endurance time analysis of consistent fish‐bone model

Efficient seismic risk assessment of irregular steel‐framed buildings through endurance time analysis of consistent fish‐bone model

The application of endurance time method for optimum seismic design of steel moment-resisting frames using the uniform deformation theory

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