Fire fragility curves for steel buildings in a community context: A methodology

Gernay, Thomas; Khorasani, Negar Elhami; Garlock, María Eugenia Moreyra

doi:10.1016/j.engstruct.2016.01.043

Cited by 78 publications

(33 citation statements)

References 25 publications

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“…The first damage state gives information about the maximum flexural capacity of the beam. The threshold vertical deflection (vb) for this damage state was assumed equal to the deflection causing an uncontrolled vertical displacement (Gernay et al 2016). The second damage state is related to the maximum drift of the column (δc) under multiple stresses due to compression and bending moment, taking into account the P-Δ effects.…”

Section: Firementioning

confidence: 99%

Cascading Hazard Analysis of a Hospital Building

2017

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Recently, multi-hazards engineering has received more attention to analyzing the behavior of a system exposed to different types of hazards and to estimate the loss data from cascading events attributed to the primary hazard. In this paper, the principle of multi-hazards was investigated and a new methodology was developed to assess the total damage of structural elements caused by cascading hazards. For each hazard, a physical model is used to assess the conditional probability of exceeding a certain intensity level due to the occurrence of the previous hazard. The method was applied to a hospital located in California, US, subjected to the three cascading hazards (earthquake, blast, and fire). Non-linear time-history analyses were performed using seven ground motions scaled to five different earthquake levels and the seismic response of the structure was evaluated. The seismic input produces damage to the hospital's power supply (Liquid Propane Gas reservoir tank) which may cause a blast. The probability of explosion was estimated by taking into account the probabilities of fuel leakage, fuel concentration, and ignition. A set of nine blast intensity levels was considered in the analyses, corresponding to different quantities of fuel content inside the tank. Afterward, a fire hazard is generated following the explosion, whose intensity level was evaluated using the compartmental heat flux. The fire effects were modeled assuming an increment of temperature in the steel frames. The proposed multi-hazard approach can be used for both improving the structural safety and reducing the building life cycle costs to enhance in the end, the resilience of

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Section: Firementioning

confidence: 99%

Cascading Hazard Analysis of a Hospital Building

2017

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“…This leads to the concept of fragility function for fire, which is commonly used in seismic engineering. The authors have recently applied this concept to fire engineering (Gernay et al, 2016) and will extend the framework to fire following earthquake. The next step in this research is to derive fragility functions for different building types (steel, concrete, etc.)…”

Section: Future Applicationsmentioning

confidence: 99%

Probabilistic measures of earthquake effects on fire performance of tall buildings

Khorasani

Gernay

Garlock

2016

Insights and Innovations in Structural Engineering, Mechanics and Computation

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“…4, J|C KL is the probability of failure conditional to the occurrence of a fire Hfi; the demand D and capacity C are random variables characterized by their PDF fD(·) and fC(·); and $ O|C KL is the CDF of the demand relative to the fire event Hfi, and α is the variable over which one integrates (temperature in this case). In this procedure, demand is the maximum temperature in the steel section and capacity is the critical temperature in the steel section when reaching a damage state [5].…”

Section: Fragility Functionsmentioning

confidence: 99%

Tools for Measuring a City’s Resilience in a Fire Following Earthquake Scenario

2015

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The paper provides a framework to evaluate the response of buildings in a community subject to fire following earthquake. First, a model is developed to determine the probability of ignition in buildings of a community due to an earthquake. Second, fragility functions are developed for buildings subject to fire, to quantify the structural damage and the expected losses. The ignition model, combined with the fragility functions, can be implemented in a GIS based risk management platform to evaluate economical losses in a region from fire following an earthquake.

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Fire fragility curves for steel buildings in a community context: A methodology

Cited by 78 publications

References 25 publications

Cascading Hazard Analysis of a Hospital Building

Cascading Hazard Analysis of a Hospital Building

Probabilistic measures of earthquake effects on fire performance of tall buildings

Tools for Measuring a City’s Resilience in a Fire Following Earthquake Scenario

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