Compliance-based estimation of seismic collapse risk of an existing reinforced concrete frame building

Tsiavos, Anastasios; Amrein, Pascal; Bender, Nathan; Stojadinović, Božidar

doi:10.1007/s10518-021-01215-9

Cited by 11 publications

(4 citation statements)

References 42 publications

(51 reference statements)

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“…Further, given a seismic hazard curve (preferably that of the mean annual frequency of ), the seismic risk is computed by convolving it with the displacement ductility fragility curve (Tsiavos et al. 2021a ). Therefore, the mean annual frequencies for the relevant range of displacement ductility thresholds are obtained.…”

Section: Appendix A: Seismic Evaluation In the Cyd Frameworkmentioning

confidence: 99%

Ductility-strength and strength-ductility relations for a constant yield displacement seismic design procedure

Silva

Tsiavos

Stojadinović

2023

Bull Earthquake Eng

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The modern engineering approach to design of structures exposed to rare but intense earthquakes allows for their inelastic response. Models and tools to rapidly but accurately assess the extent of the inelastic response of the structure and control its performance are, therefore, essential. We develop a closed-form $$\upmu -R^{*}-S_{d,y}$$ μ - R ∗ - S d , y relation between the ductility $$\upmu $$ μ and the strength reduction factor R*, as well as its approximate inverse R*-$$\upmu $$ μ -Sd,y relation, both functions of the SDOF oscillator yield displacement Sd,y, not its vibration period T. The fundamental vibration period of the structure varies during the iterative design process focused on modifying its strength. However, the yield displacement of the structure is practically invariant with respect to the strength of the structure, as it depends primarily on its geometry and material properties. We use these relations to formulate a constant yield displacement seismic design procedure and exemplify it. Noting the structure of the developed relations, we use dimensional analysis to formulate a version of the ductility-strength and strength-ductility relations that are dimensionless and independent of the seismic hazard intensity. These novel, dimensionless master relations are the $$\upmu $$ μ -R*-H/B-$$\upkappa $$ κ ductility-strength and the R*-$$\upmu $$ μ -H/B-$$\upkappa $$ κ strength-ductility relations.

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Section: Appendix A: Seismic Evaluation In the Cyd Frameworkmentioning

confidence: 99%

Ductility-strength and strength-ductility relations for a constant yield displacement seismic design procedure

Silva

Tsiavos

Stojadinović

2023

Bull Earthquake Eng

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“…In this regard, ref. [49] proposed a methodology for the derivation of fragility curves for existing structures. In the present paper, fragility curves were developed by considering predefined limit states (LS) of the maximum strains (Table 3) at which the probability of exceedance was calculated.…”

Section: Pipeline Failure Criteriamentioning

confidence: 99%

The Role of Soil Structure Interaction in the Fragility Assessment of HP/HT Unburied Subsea Pipelines

Forcellini

Mina

Karampour

2022

JMSE

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Subsea high pressure/high temperature (HP/HT) pipelines may be significantly affected by the effects of soil structure interaction (SSI) when subjected to earthquakes. Numerical simulations are herein applied to assess the role of soil deformability on the seismic vulnerability of an unburied pipeline. Overcoming most of the contributions existing in the literature, this paper proposes a comprehensive 3D model of the system (soil + pipeline) by performing OpenSees that allows the representation of non-linear mechanisms of the soil and may realistically assess the induced damage caused by the mutual interaction of buckling and seismic loads. Analytical fragility curves are herein derived to evaluate the role of soil structure interaction in the assessment of the vulnerability of a benchmark HP/HT unburied subsea pipeline. The probability of exceeding selected limit states was based on the definition of credited failure criteria.

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“…It should be reiterated that bridges are an important link for communities and their failure needs to be considered with advanced methodologies, such as those proposed by [17][18][19][20]. Moreover, a compliance-based methodology, such as that reported by study [21], for the estimation of the seismic collapse risk of existing buildings and bridges could also be remarkable.…”

Section: Introductionmentioning

confidence: 99%

Failure Investigation of under Construction Prestressed Concrete Bridge in Chitwan, Nepal

Adhikari

Jha²,

Bhatt

et al. 2022

Infrastructures

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On 6 April 2021, a 200 m-long under-construction prestressed concrete bridge failed in the Chitwan District in central Nepal. Two of the four bridge spans collapsed without any notable evidence of dynamic force application. Under-construction bridge failures are sometimes reported and can have a significant impact on the future construction adjustments. Thus, a detailed study of failure mechanisms will be insightful for the structural engineering community. Aiming to document the failure modes and exemplify lessons for improvement, this paper reports the detailed component level failure mechanisms of the bridge using visual inspection, site measurements, finite element modeling, and some forms of non-destructive testing. The chronological failure mechanisms are presented based on the field evidence and juxtaposed with the results of analytical modeling. The sum of findings highlights that the dead load failure, triggered by the settlement of falseworks, is the most critically governing factor that initiated and aggravated the damage scenario.

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Compliance-based estimation of seismic collapse risk of an existing reinforced concrete frame building

Cited by 11 publications

References 42 publications

Ductility-strength and strength-ductility relations for a constant yield displacement seismic design procedure

Ductility-strength and strength-ductility relations for a constant yield displacement seismic design procedure

The Role of Soil Structure Interaction in the Fragility Assessment of HP/HT Unburied Subsea Pipelines

Failure Investigation of under Construction Prestressed Concrete Bridge in Chitwan, Nepal

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