Fire Following Earthquakes

Scawthorn, Charles

doi:10.1201/9781420042443.ch29

Cited by 25 publications

(40 citation statements)

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“…Many earthquakes in the US, Japan, and NZ have the chance for fires due to the wooden housing typologies often used. Scawthorn et al (2005) details various case studies in his book as one of the better fire following earthquake references. In many countries in the world, wooden frames are used including California, Japan, New Zealand, and Australia as shown by the proportion of brown color (wooden stock) in Figure 3 of each nation globally.…”

Section: Collection Of Data For Earthquake Fatalities and Economic Lomentioning

confidence: 99%

Losses Associated with Secondary Effects in Earthquakes

Daniell

Schaefer

Wenzel

2017

Front. Built Environ.

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Section: Collection Of Data For Earthquake Fatalities and Economic Lomentioning

confidence: 99%

Losses Associated with Secondary Effects in Earthquakes

Daniell

Schaefer

Wenzel

2017

Front. Built Environ.

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“…This hazard can be considered as a rare occurrence with a lot of consequences . PEF is a big danger to places with high population density . The PEF is known to be a destructive force in the last century .…”

Section: Introductionmentioning

confidence: 99%

Sensitivity analysis of the failure time of reinforcement concrete frame under postearthquake fire loading

Moradi

Tavakoli

AbdollahZade

2019

Structural Concrete

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Today, many scholars have drawn attention to consecutive events such as postearthquake fire (PEF). PEF is one of the rare occurrences that leads to many consequences. The resistance of structure against external loads is important for structure and earthquake engineers. The duration of structures' resistance against fire in damaged structures due to earthquake can be different from intact ones. Many parameters have an effect on the resistance of structures. This paper deals with the importance of design parameters and loading for the resistance of reinforced concrete frames during PEF loading. Three methods of Monte Carlo, Tornado diagram, and first-order second moment have been used to analysis based on random variables. The first failure time in the reinforcement concrete frame (RC) is considered as the strength of the reinforced concrete frame to PEF load. The results depicted that among design parameters, yield stress of rebar is the most significant parameter for the resistance of reinforced concrete frames. Among the loading parameters, the intensity of the seismic load is the most important parameter. The sensitivity of the failure time of members in RC frame shows that during the low intensity of earthquakes, the cover of concrete is the main design parameter after yield strength of rebar. As the intensity of seismic loads increases, the effect of concretes' cover on the resistance of structures against fire decreases. The sensitivity of the failure time to intensity of seismic load is higher between Sa = 0.3 g to Sa = 0.8 g. Also, results show the sensitivity of the design variable decreases by increasing the intensity of the seismic load. K E Y W O R D S postearthquake fire, random variable, RC frame, sensitivity analysis

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“…Building on this past observed desirable performance, Imani et al (2014) conducted a series of experiments on CFDST columns to study their behavior under postearthquake fire scenarios, an important area of research given that significant conflagrations after earthquakes have occurred in the past (e.g., Scawthorn et al 2005), that losses from fires after earthquakes can exceed those from the shaking itself [National Oceanic and Atmospheric Administration (NOAA) 1972], and that, in more recent earthquakes, numerous separate fires confined to single structures have caused significant damage (Cousins and Smith 2004;Scawthorn 2008). This paper investigates, using finite-element (FE) analysis, the effectiveness of different material models and analysis techniques in replicating the experimental results reported by Imani et al (2014) and highlights some of the challenges in modeling the sequentially combined seismic and fire effects.…”

Section: Introductionmentioning

confidence: 99%

Finite Element Simulation of Concrete-Filled Double-Skin Tube Columns Subjected to Postearthquake Fires

2015

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Detailed finite-element (FE) analyses were conducted using commercial software to simulate the behavior of concrete-filled double-skin tube (CFDST) columns subjected to postearthquake fires. The main goal of these simulations was to replicate results from a series of experiments that first subjected CFDST columns to different levels of seismic damage by applying cyclic lateral loading, and then fire testing of the same specimens in a furnace. The numerical simulations paralleled the experiments in the loading sequence. Different material models and modeling techniques were assessed in terms of reproducing experimental observations including local failure modes such as steel tube buckling. Results from the cyclic loading simulations including residual deformations were maintained as initial conditions for the subsequent thermal-stress analysis to simulate the fire testing phase of the experiments. A sequentially coupled nonlinear thermalstress analysis was conducted on the models of CFDST columns to study the effects of exposure to a standard fire (time-temperature) curve. Numerical simulations using material properties adopted from European general rules for structural fire design provided a reasonable comparison to experimental results for both during and postfire situations.

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Fire Following Earthquakes

Cited by 25 publications

References 0 publications

Losses Associated with Secondary Effects in Earthquakes

Losses Associated with Secondary Effects in Earthquakes

Sensitivity analysis of the failure time of reinforcement concrete frame under postearthquake fire loading

Finite Element Simulation of Concrete-Filled Double-Skin Tube Columns Subjected to Postearthquake Fires

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