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Seismic fragility curves for structures using non-parametric representations

Chu MAI, Katerina KONAKLI, Bruno SUDRET

Frontiers of Structural and Civil Engineering 2017, Volume 11, Issue 2,   Pages 169-186 doi: 10.1007/s11709-017-0385-y

Abstract: Fragility curves are commonly used in civil engineering to assess the vulnerability of structures toThe classical approach relies on assuming a lognormal shape of the fragility curves; it is thus parametricIn this paper, we introduce two non-parametric approaches to establish the fragility curves without employingAs an illustration, we compute the fragility curves for a three-storey steel frame using a large numberThe curves obtained with the non-parametric approaches are compared with respective curves based on the

Keywords： earthquake engineering     fragility curves     lognormal assumption     non-parametric approach     kernel density estimation    

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Centrifuge experiments for shallow tunnels at active reverse fault intersection

Mehdi SABAGH, Abbas GHALANDARZADEH

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 3,   Pages 731-745 doi: 10.1007/s11709-020-0614-7

Abstract: By monitoring the progress of damage states by increasing PGD, the fragility curves corresponding to

Keywords： reverse fault rupture     continuous tunnel     geotechnical centrifuge     ground surface deformations     fragilitycurves    

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Enhanced empirical models for predicting the drift capacity of less ductile RC columns with flexural, shear or axial failure modes

Mohammad Reza AZADI KAKAVAND, Reza ALLAHVIRDIZADEH

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 5,   Pages 1251-1270 doi: 10.1007/s11709-019-0554-2

Abstract: Furthermore, fragility curves are determined for comparing the obtained results with the experimental

Keywords： flexural-shear-axial failure     drift capacity     reinforced concrete columns     statistical analysis     fragilitycurves    

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Development of realistic design fire time-temperature curves for the testing of cold-formed steel wall

Anthony Deloge ARIYANAYAGAM,Mahen MAHENDRAN

Frontiers of Structural and Civil Engineering 2014, Volume 8, Issue 4,   Pages 427-447 doi: 10.1007/s11709-014-0279-1

Abstract: This paper presents the details of a research study aimed at developing realistic design fire curvesincludes a review of the characteristics of building fires, previously developed fire time-temperature curvesThe paper highlights that real building fire time-temperature curves depend on the fuel load representingFinally, realistic design fire time-temperature curves simulating the fire conditions in modern residential

Keywords： fire safety     standard fire curve     realistic design fire time-temperature curves     light gauge steel frame    

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Collapse fragility assessment of steel roof framings with force limiting devices under transient wind

Linjia BAI, Yunfeng ZHANG

Frontiers of Structural and Civil Engineering 2012, Volume 6, Issue 3,   Pages 199-209 doi: 10.1007/s11709-012-0168-4

Abstract: This paper presents a fragility analysis of the collapse of steel roof frame structures under combinedFor the presented fragility assessment of steel roof collapse, a Monte Carlo method combined with response

Keywords： collapse     dynamic response     fragility analysis     Monte Carlo simulation     wind load    

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Erratum to: Meter-scale variation within a single transect demands attention to taxon accumulation curves

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 6, doi: 10.1007/s11783-022-1560-5

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Fragility assessment of wood sheathing panels and roof-to-wall connections subjected to wind loading

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 4,   Pages 867-876 doi: 10.1007/s11709-021-0745-5

Abstract: performance and the reliability of low-rise wood-frame residential buildings with a focus on the roofs, fragilityThus, this paper examines the fragility of specific types of nails, roof-to-wall (RW) connection detailsThe presented fragility analysis considers four scenarios, including different sheathing and nail sizesThe eight fragility models suggest that the safest roof sheathing (RS) is the 1.22 m × 1.22 m sheathing

Keywords： tornadoes     wind loads     low-rise buildings     fragility analysis     risk assessment     structural failures    

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Meter-scale variation within a single transect demands attention to taxon accumulation curves in riverine

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 5, doi: 10.1007/s11783-022-1543-6

Abstract:

● Riverine microbiomes exhibited hyperlocal variation within a single transect.

Keywords： Microbiome     Freshwater     Taxon accumulation curve     Community assembly    

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Seismic fragility assessment of revised MRT buildings considering typical construction changes

Rakesh DUMARU, Hugo RODRIGUES, Humberto VARUM

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 1,   Pages 241-266 doi: 10.1007/s11709-019-0560-4

Abstract: The present study investigates the vulnerability assessment of the prototype revised Mandatory Rule of Thumb (MRT) buildings initially designed and detailed for three storeys bare frame building; later modified through variable number of storeys (three, four, and five) and different arrangement of infill walls (bare frame, soft-storey, irregular infilled, and fully infilled). The application of infill walls increases the fundamental frequencies, stiffness, and maximum strength capacity, but reduces the deformation capability than the bare frame building. The vulnerability was also reduced through infill walls, where the probability of exceeding partial-collapse and collapse damage reduced by 80% and 50%, respectively. Furthermore, the increased in storeys (three to five) also increases the failure probability, such that partial-collapse and collapse for fully infilled increases by almost 55% and 80%, respectively. All obtained results and discussions concluded that the structural sections and details assigned for MRT building is not sufficient if considered as bare frame and soft-storey. And increase in number of storeys causes building highly vulnerable although the infill walls were considered.

Keywords： mid-rise buildings     revised NBC 205: 2012     masonry infill walls     configurations of infill walls     vulnerability assessment and inter-storey drift    

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Damage-constitutive model for seawater coral concrete using different stirrup confinements subjected to axial loading

Frontiers of Structural and Civil Engineering 2023, Volume 17, Issue 3,   Pages 429-447 doi: 10.1007/s11709-022-0913-2

Abstract: Subsequently, the stress−strain curves of specimens subjected to axial loading were measured., and the proposed damage-constitutive model had a good correlation with the measured stress−strain curves

Keywords： coral aggregate concrete     stress−strain curves     lateral effective stress     peak stress     axial−lateralcurves     damage-constitutive model.    

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Seismic performance of viaducts with probabilistic method

ZHU Xi, WANG Jianmin

Frontiers of Structural and Civil Engineering 2007, Volume 1, Issue 3,   Pages 267-273 doi: 10.1007/s11709-007-0034-y

Abstract: The risk is quantified by a procedure on the basis of a numerical determination of the fragility curvesThe analytical fragility curves were obtained specifically, using both Capacity Spectrum Method (CSM)The structural fragility curves developed by CSM method can help make the structural analysis simpleFragility curves are powerful tools for use in performance-based seismic bridge design.

Keywords： uncertainty     Earthquake Engineering     regression analysis     accurate     fragility    

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Scaled boundary finite element method with exact defining curves for two-dimensional linear multi-field

Jaroon RUNGAMORNRAT, Chung Nguyen VAN

Frontiers of Structural and Civil Engineering 2019, Volume 13, Issue 1,   Pages 201-214 doi: 10.1007/s11709-018-0488-0

Abstract: This paper presents an efficient and accurate numerical technique based upon the scaled boundary finite element method for the analysis of two-dimensional, linear, second-order, boundary value problems with a domain completely described by a circular defining curve. The scaled boundary finite element formulation is established in a general framework allowing single-field and multi-field problems, bounded and unbounded bodies, distributed body source, and general boundary conditions to be treated in a unified fashion. The conventional polar coordinates together with a properly selected scaling center are utilized to achieve the exact description of the circular defining curve, exact geometry of the domain, and exact spatial differential operators. Standard finite element shape functions are employed in the discretization of both trial and test functions in the circumferential direction and the resulting eigenproblem is solved by a selected efficient algorithm. The computational performance of the implemented procedure is then fully investigated for various scenarios to demonstrate the accuracy in comparison with standard linear elements.

Keywords： multi-field problems     defining curve     exact geometry     general boundary conditions     SBFEM    

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Numerical investigation of the ultimate lateral resistance of piles in soft clay

Konstantinos P. TZIVAKOS,Michael J. KAVVADAS

Frontiers of Structural and Civil Engineering 2014, Volume 8, Issue 2,   Pages 194-200 doi: 10.1007/s11709-014-0251-0

Abstract: curves proposed in literature for soft clays are imported into a beam-on-nonlinear-Winkler-foundation

Keywords： y curves     finite element method (FEM)    

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Seismic responses and resilience of novel SMA-based self-centring eccentrically braced frames under near-fault ground motions

Zhi-Peng CHEN; Songye ZHU

Frontiers of Structural and Civil Engineering 2022, Volume 16, Issue 8,   Pages 962-975 doi: 10.1007/s11709-022-0873-6

Abstract: Structural fragility and loss analyses are subsequently conducted through incremental dynamic analyses

Keywords： shape memory alloy     eccentrically braced frame     self-centring     fragility     loss function     resilience    

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Intermediate HSS bracing members during seismic excitations: modeling, design, and behavior

Madhar HADDAD

Frontiers of Structural and Civil Engineering 2018, Volume 12, Issue 1,   Pages 148-162 doi: 10.1007/s11709-016-0375-5

Abstract: Finite element modeling of the HSS braces that utilizes the true stress-strain curves produces hysteresisTrue stress-strain curves are obtained from coupon tests or stub-column tests while utilizing an exponentialIn the current study, the true stress-strain curves are directly obtained from tests on stub-columnsResults indicate that the stress-strain curves for these braces are not unique.

Keywords： HSS     FEM     stress-strain curves     damage model    

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Title Author Date Type Operation

Seismic fragility curves for structures using non-parametric representations

Chu MAI, Katerina KONAKLI, Bruno SUDRET

Journal Article

Centrifuge experiments for shallow tunnels at active reverse fault intersection

Mehdi SABAGH, Abbas GHALANDARZADEH

Journal Article

Enhanced empirical models for predicting the drift capacity of less ductile RC columns with flexural, shear or axial failure modes

Mohammad Reza AZADI KAKAVAND, Reza ALLAHVIRDIZADEH

Journal Article

Development of realistic design fire time-temperature curves for the testing of cold-formed steel wall

Anthony Deloge ARIYANAYAGAM,Mahen MAHENDRAN

Journal Article

Collapse fragility assessment of steel roof framings with force limiting devices under transient wind

Linjia BAI, Yunfeng ZHANG

Journal Article

Erratum to: Meter-scale variation within a single transect demands attention to taxon accumulation curves

Journal Article

Fragility assessment of wood sheathing panels and roof-to-wall connections subjected to wind loading

Journal Article

Meter-scale variation within a single transect demands attention to taxon accumulation curves in riverine

Journal Article

Seismic fragility assessment of revised MRT buildings considering typical construction changes

Rakesh DUMARU, Hugo RODRIGUES, Humberto VARUM

Journal Article

Damage-constitutive model for seawater coral concrete using different stirrup confinements subjected to axial loading

Journal Article

Seismic performance of viaducts with probabilistic method

ZHU Xi, WANG Jianmin

Journal Article

Scaled boundary finite element method with exact defining curves for two-dimensional linear multi-field

Jaroon RUNGAMORNRAT, Chung Nguyen VAN

Journal Article

Numerical investigation of the ultimate lateral resistance of piles in soft clay

Konstantinos P. TZIVAKOS,Michael J. KAVVADAS

Journal Article

Seismic responses and resilience of novel SMA-based self-centring eccentrically braced frames under near-fault ground motions

Zhi-Peng CHEN; Songye ZHU

Journal Article

Intermediate HSS bracing members during seismic excitations: modeling, design, and behavior

Madhar HADDAD

Journal Article