Decision support for conceptual performance-based design

Krawinkler, Helmut; Zareian, Farzin; Medina, Ricardo A.; Ibarra, Luis

doi:10.1002/eqe.536

Cited by 103 publications

(90 citation statements)

References 5 publications

(6 reference statements)

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“…Similarly, the strength of any story is approximately higher than 80% of that of the story above, fulfilling in such a way the relevant criterion described by ISE [24]. 6 Figure 2. Plan view of a typical story (left) and internal frame (right) of the 8-story RC building studied herein.…”

Section: Design According To the Eurocodesmentioning

confidence: 87%

“…Still, such approaches lacked a rigorous probabilistic basis until the emergence of the Cornell-Krawinkler framework [5], adopted by the Pacific Earthquake Engineering Research (PEER) Center. The latter provided a fertile platform for assessing losses, casualties and downtime, which was gradually expanded to be used for design (rather than just for assessment purposes) of buildings and bridges (e.g., [6][7][8]). …”

Section: Introductionmentioning

confidence: 99%

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Yield frequency spectra and seismic design of code‐compatible RC structures: an illustrative example

Katsanos

Vamvatsikos

2017

Earthq Engng Struct Dyn

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SUMMARYThe seismic design of an 8-story reinforced concrete space frame building is undertaken using a Yield Frequency Spectra (YFS) performance-based approach. YFS offer a visual representation of the entire range of a system's performance in terms of the mean annual frequency (MAF) of exceeding arbitrary global ductility or displacement levels versus the base shear strength. As such, the YFS framework can establish the required base shear and corresponding first-mode period to satisfy arbitrary performance objectives for any structure that may be approximated by a single-degree-of-freedom system with given yield displacement and capacity curve shape. For the 8-story case study building, deformation checking is the governing limit state. A conventional code-based design was performed using seismic intensities tied to the desired MAF for safety checking. Then, the YFS-based approach was employed to redesign the resulting structure working backwards from the desired MAF of response (rather than intensity) to estimate an appropriate value of seismic intensity for use within a typical engineering design process. For this high-seismicity and high-importance midrise building, a stiffer system with higher base shear strength was thus derived. Moreover, performance assessment via incremental dynamic analysis showed that while the code-design did not meet the required performance objective, the YFS-based redesign needed only pushover analysis results to offer a near-optimal design outcome. The rapid convergence of the method in a single design/analysis iteration emphasized its efficiency and practicability as a design aid for practical application.KEY WORDS: performance-based seismic design; seismic code; nonlinear analysis; yield frequency spectra; reinforced concrete; multi-story space frame building.

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Section: Design According To the Eurocodesmentioning

confidence: 87%

Section: Introductionmentioning

confidence: 99%

Yield frequency spectra and seismic design of code‐compatible RC structures: an illustrative example

Katsanos

Vamvatsikos

2017

Earthq Engng Struct Dyn

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“…This procedure, termed story-based loss estimation, allows for a tremendous reduction of required input data, relieving the practicing engineer from a tedious duty and enabling quick loss investigations (see also [12]). By employing default component inventories based on the building characteristics, it also paves the way for a conceptual design aiming at loss limitation [13,14], where story-level DV-EDP functions are used as the reference. This study illustrates a simple FEMA P-58 compatible methodology for derivation of story repair cost DV-EDP functions, henceforth referred to as story loss functions, that relate story-level repair cost directly to EDPs.…”

Section: λ(Dv)= ∫ ∫ ∫ G(dv|dm)•|dg(dm|edp)|•|dg(edp|im)|•|dλ(im)|mentioning

confidence: 99%

Development of Fema P-58 Compatible Story Loss Functions: Steel Office Buildings in High Seismicity Regions

Παπαδόπουλος¹,

Vamvatsikos²,

Kazantzi³

2017

Proceedings of the 6th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering (COM

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“…losses) using FOSM methods. Other efforts extend the SAC/FEMA approach to the assessment of reinforced concrete buildings [4] or the development of decision-making tools for the conceptual design of engineering facilities [5].…”

Section: Introductionmentioning

confidence: 99%

Fast performance uncertainty estimation via pushover and approximate IDA

Fragiadakis¹,

Vamvatsikos²

2009

Earthq Engng Struct Dyn

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SUMMARYApproximate methods based on the static pushover are introduced to estimate the seismic performance uncertainty of structures having non-deterministic modeling parameters. At their basis lies the use of static pushover analysis to approximate Incremental Dynamic Analysis (IDA) and estimate the demand and capacity epistemic uncertainty. As a testbed we use a nine-storey steel frame having beam hinges with uncertain moment-rotation relationships. Their properties are fully described by six, randomly distributed, parameters. Using Monte Carlo simulation with Latin hypercube sampling, a characteristic ensemble of structures is created. The Static Pushover to IDA (SPO2IDA) software is used to approximate the IDA capacity curve from the appropriately post-processed results of the static pushover. The approximate IDAs allow the evaluation of the seismic demand and capacity for the full range of limit-states, even close to global dynamic instability. Moment-estimating techniques such as Rosenblueth's point estimating method and the first-order, second-moment (FOSM) method are adopted as simple alternatives to obtain performance statistics with only a few simulations. The pushover is shown to be a tool that combined with SPO2IDA and moment-estimating techniques can supply the uncertainty in the seismic performance of first-mode-dominated buildings for the full range of limit-states, thus replacing semi-empirical or code-tabulated values (e.g. FEMA-350), often adopted in performance-based earthquake engineering.

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Decision support for conceptual performance-based design

Cited by 103 publications

References 5 publications

Yield frequency spectra and seismic design of code‐compatible RC structures: an illustrative example

Yield frequency spectra and seismic design of code‐compatible RC structures: an illustrative example

Development of Fema P-58 Compatible Story Loss Functions: Steel Office Buildings in High Seismicity Regions

Fast performance uncertainty estimation via pushover and approximate IDA

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