Performance-based rules for the simplified assessment of steel CBFs

Montuori, Rosario; Nastri, Elide; Piluso, Vincenzo; Todisco, Paolo

doi:10.1016/j.jcsr.2022.107167

Cited by 16 publications

(4 citation statements)

References 25 publications

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“…The specific performance points (A, B, C, D, see Figure 1) associated with pre-defined limit states [30], identifying a target performance level, can be derived as follows:…”

Section: Theory Remarksmentioning

confidence: 99%

“…Tables 1 and 2 show the results of the first kinematic multiplier α (t) 0.im and the slope of the equilibrium curve γ (t) im for each failure mechanism according to the TPMC method [27][28][29][30] and for case 1 and 2, respectively. In particular, in case study 1, the collapse mechanism occurs according to the partial failure mechanism type-2, according to Figure 2, while the soft-storey mechanism, i.e., type-3 mechanism, occurs in case study 2.…”

Section: Nonlinear Static Analysismentioning

confidence: 99%

“…However, especially for largescale assessments and the planning of seismic risk mitigation interventions, a simplified methodology able to describe the capacity curve analytically and quickly without resorting to more complex analyses could be extremely useful, given a code implementation. As a result, a simplified methodology for different structural types has been developed to evaluate the capacity of an existing building without resorting to static or dynamic nonlinear analysis [27][28][29][30]. To calibrate this model, a wide parametric analysis was carried out on 420 frames designed according to three different approaches [27].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Application and Validation of a Simplified Approach to Evaluate the Seismic Performances of Steel MR-Frames

Montuori,

Nastri,

Piluso

et al. 2024

Applied Sciences

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The main aim of this work is to validate the application of a simplified performance-based method for assessing the seismic performance of steel buildings, focusing particularly on Moment Resisting Frames (MRFs) through nonlinear analyses. This simplified method defines the capacity curve of a structure through elastic and rigid-plastic analyses, calibrated by regression analyses conducted on 420 structures. To assess its accuracy, the method was compared with other analytical approaches, including incremental dynamic analyses (IDA) provided by existing codes. These analyses were performed on both real structures and simulated designs, considering recent and older codes. The comparison of capacity results derived from code-based approaches and IDA, aligned with the limit states outlined in current codes, showcased the high reliability of the proposed simplified assessment approach.

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“…The specific performance points (A, B, C, D, see Figure 1) associated with pre-defined limit states [30], identifying a target performance level, can be derived as follows:…”

Section: Theory Remarksmentioning

confidence: 99%

Section: Nonlinear Static Analysismentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Application and Validation of a Simplified Approach to Evaluate the Seismic Performances of Steel MR-Frames

Montuori,

Nastri,

Piluso

et al. 2024

Applied Sciences

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“…Consequently, a completely analytical simplified model allowing us to univocally control these complexities is introduced for steel Concentrically Braced Frames (CBFs) [36].…”

Section: Introductionmentioning

confidence: 99%

Simplified Approach for the Seismic Assessment of Existing X Shaped CBFs: Examples and Numerical Applications

et al. 2022

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The capacity of a structure can be assessed using inelastic analyses, requiring sophisticated numerical procedures such as pushover and incremental dynamic analyses. A simplified method for the evaluation of the seismic performance of steel Concentrically Braced Frames (CBFs) to be used in everyday practice and the immediate aftermath of an earthquake has been recently proposed. This method evaluates the capacity of an existing building employing an analytical trilinear model without resorting to any non-linear analysis. The proposed methodology has been set up through a large parametric analysis, carried out on 420 frames designed according to three different approaches: the first one is the Theory of Plastic Mechanism Control (TPMC), ensuring the design of structures showing global collapse mechanisms (GCBFs), the second one is based on the Eurocode 8 design requirements (SCBFs), and the third is a non-seismic design, based on a non-seismic design (OCBFs). In this paper, some examples of the application of this simplified methodology are proposed with references to structures that are supposed to exhibit global, partial, and soft storey mechanisms.

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