Higher Mode Effects in the Nonlinear Static Analysis of a Collapsed Chimney

Gould, Phillip L.; Wei, Huang

doi:10.1061/40889(201)19

Cited by 3 publications

(4 citation statements)

References 4 publications

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“…The flue opening located at the base of the chimneys for gas import is typically considered a weak link from a structural point of view and several past studies were devoted to the evaluation of the chimney's stiffness and strength at this particular location (e.g. Huang et al 2004;Gould and Huang 2006). Given the attention paid to this part, in all examined cases the opening is considered to be welldesigned and sufficiently strengthened, so as not to affect the chimney's lateral stiffness; hence its potentially adverse effect on the structural integrity was disregarded.…”

Section: Steel Chimneysmentioning

confidence: 99%

“…A handful of studies is available on the seismic fragility of reinforced concrete (RC) chimneys via numerical models (e.g. Huang et al 2004;Gould and Huang 2006;Zhou et al 2015Zhou et al , 2019Guo et al 2018Guo et al , 2019Qiu et al 2020), while contributions on steel chimneys and process towers are very scarce (e.g. Lopez et al 1996;Moharrami and Amini 2014).…”

Section: Introductionmentioning

confidence: 99%

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Seismic fragility assessment of high-rise stacks in oil refineries

Karaferis

Kazantzi²,

Melissianos

et al. 2022

Bull Earthquake Eng

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The seismic fragility is assessed for typical high-rise stacks encountered in oil refineries, namely process towers, chimneys, and flares. Models of varying complexity were developed for the structures of interest, attempting to balance computational complexity and accuracy regarding the structural dynamic and strength properties. The models were utilized along with a set of hazard-consistent ground motions for evaluating the seismic demands through incremental dynamic analysis.Demand/capacity-related uncertainties were explicitly accounted for in the proposed framework. Damage states were defined for each of the examined structure considering characteristic serviceability and ultimate limit states. Τhe proposed resource-efficient roadmap for the analytical seismic fragility assessment of typical high-rise stacks, as well as the findings of the presented research work are available to be exploited in seismic risk assessment studies of oil refineries.

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Section: Steel Chimneysmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Seismic fragility assessment of high-rise stacks in oil refineries

Karaferis

Kazantzi²,

Melissianos

et al. 2022

Bull Earthquake Eng

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“…Subtracting equation (8) from equation 7yields Figure 2: Accelerations of node i and centroid C of the investigated lump. Given the equilibrium of the upper half of segment l, we have…”

Section: Forces and Bending Moment On The Central Cross Section Of Thmentioning

confidence: 99%

“…A 115 m high RC chimney collapsed on August 17, 1999, during the Izmit earthquake in Turkey [7][8][9][10]. Huang et al [7,8] investigated a collapsed chimney with methods of linear dynamic response spectrum and nonlinear static capacity spectrum. Akinci [9] used shell elements to analyze a collapsed chimney.…”

Section: Introductionmentioning

confidence: 99%

Earthquake Response Analysis of Tall Reinforced Concrete Chimneys considering Eccentricity

Jiang

Liu

Bai

2020

Shock and Vibration

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A numerical algorithm is presented to analyze earthquake response of tall reinforced concrete (RC) chimneys based on stick multidegree-of-freedom models. The algorithm considers the eccentricity phenomena between spatial discrete nodes and corresponding centroids of investigated lumps. The spatial discrete segments of the chimney are used to construct the investigated lumps. The equations of dynamic equilibrium of the investigated lumps are derived, and the numerical calculation procedure is implemented. Phenomena of eccentricity are studied for 150 m and 210 m RC chimneys. Seismic stresses and effects of vertical ground motion for the two chimneys are also studied. Numerical results show that the tensile and compressive stresses of the seismic control cross sections of the chimneys may increase under the actions of several specific earthquake waves by considering existing eccentricities. The effect of eccentricity on the earthquake responses of tall RC chimney should be considered, and stresses caused by vertical ground motion should not be neglected to obtain accurate earthquake response of chimneys.

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