Evaluation of Plasco Building fire-induced progressive collapse

Shakib, Hamzeh; Zakersalehi, Maedeh; Jahangiri, Vahid; Zamanian, Reza

doi:10.1016/j.istruc.2020.08.058

Cited by 29 publications

(11 citation statements)

References 21 publications

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“…Progressive collapse due to a fire in the Plasco building in Tehran (Iran) was investigated. The results showed that the building vulnerability was due to insufficient ductility and structural continuity, which led to the spread of damage to the entire structure [6]. The vulnerability of Figure 1.…”

Section: Introductionmentioning

confidence: 99%

“…Airplane impact, design or construction errors, fire, gas explosions, accidental overload, hazardous materials, vehicle collisions, bomb blasts, etc., are some of the unusual loads that can lead to the progressive collapse of buildings [4][5][6]. Because the probability occurrence of these hazards is low; they are not considered in the structural design or indirectly investigated by the passive defense protection measures.…”

Section: Introductionmentioning

confidence: 99%

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Retrofitting and Rehabilitation in Steel Moment-resisting Frame with Prestressed Concrete Slab against Progressive Collapse Potential

Shokhoohfar

Kaafi

2022

IJE

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Diaphragms are a fundamental part of the earthquake-resistant system, and in terms of rigidity, it is essential to transmit dynamic loads on a base of the structure. Also, floor openings on the response of buildings against progressive collapse are issues that have received less attention. In this study, floor opening surfaces and their positions on the progressive collapse potential of steel moment-resisting frame (SMRF) buildings were investigated according to the alternate load path method. Moreover, to retrofit and rehabilitate the two-way reinforced concrete (RC) slabs against a progressive collapse, two strategies, prestressed concrete slabs and installing carbon fiber reinforced polymer sheets on the surface of the old concrete slab, were proposed and six-story SMRF buildings were simulated using the finite element method. The maximum axial force around the removal column is 20% greater than the corresponding values on the floor opening is in the corner of the plan and the appropriate performance of the prestressed concrete slab leads to the load distribution in the ceiling diaphragm.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Retrofitting and Rehabilitation in Steel Moment-resisting Frame with Prestressed Concrete Slab against Progressive Collapse Potential

Shokhoohfar

Kaafi

2022

IJE

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“…The most urgent problem of the safety of buildings and structures made of reinforced concrete becomes in the case of exposure to special loads of a dynamic nature, at which force values that exceed those provided by the static calculation can be achieved, and then the danger of progressive collapse increases significantly. dissipate energy while maintaining the overall resistance of buildings to the action of horizontal and vertical loads, even when the structural scheme of their individual parts is changed [6][7].…”

Section: Introductionmentioning

confidence: 99%

“…Execution at NIIZhB them. AA Gvozdev's research allowed recommending A500SP class reinforcement for wide use in reinforced concrete structures, including those used in domestic buildings and structures designed to prevent progressive collapse and during construction in earthquake-prone areas [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

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Elimination of the effect of progressive collapse as a factor in increasing the environmental friendliness of district buildings

et al. 2021

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The work is devoted to the principle of designing residential quarters with the exclusion of building collapse according to the “domino” principle, ie. without the development of progressive collapse in the event of an accident. This principle increases the efficiency of the “green” development of the construction industry. The work provides real examples when the mistake of the architect of the improvement of the district cost the integrity of a large quarter, presents pictures of man-made disasters associated with the collapse of entire microdistricts. The text of the article is a study of methods and tools for designing buildings and structures, which, being combined into one quarter, will be able to maintain structural integrity in the event of a collapse of one of the components of such a residential building. The principles of calculating a reinforced concrete monolith that prevent progressive collapse are highlighted. Also, the text of the article contains the author’s nomogram, obtained empirically and confirmed by experiments.

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Experimental testing on timber connections considering the influence of gap size and intumescent sealants

du Plessis,

Sulon,

Streicher

et al. 2023

Fire and Materials

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This paper investigates the influence of gap size (openings/spaces between two structural members) and the presence of intumescent sealants on the development of temperature when timber connections are exposed to fire conditions. The experimental results of 21 samples representing a concealed steel‐to‐timber connection configuration that was exposed with a 0, 3, 6, and 10 mm gap to the ISO834 standard fire for 120 min are presented. Half of the samples in each sample group were protected with an intumescent fire protection sealant. The temperatures in the timber were measured at various locations around the gap and directly next to the steel component. The experimental results show that the presence of a gap increases the temperature of the timber more than predicted by the thermal penetration models available, with current code guidelines (e.g., Eurocode 5) possibly being non‐conservative. The use of an intumescent fire protection sealant in the gap is shown to be an effective protection method, but that the application configuration is important to ensure effective protection, especially as the gap becomes smaller. The results also show that the use of an intumescent fire protection sealant in a gap increases the predictability of the temperatures in the timber in longer duration fires. Unprotected samples and 0 mm gap samples exhibited large variability in the thermal development outcomes over time.

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Evaluation of Plasco Building fire-induced progressive collapse

Cited by 29 publications

References 21 publications

Retrofitting and Rehabilitation in Steel Moment-resisting Frame with Prestressed Concrete Slab against Progressive Collapse Potential

Retrofitting and Rehabilitation in Steel Moment-resisting Frame with Prestressed Concrete Slab against Progressive Collapse Potential

Elimination of the effect of progressive collapse as a factor in increasing the environmental friendliness of district buildings

Experimental testing on timber connections considering the influence of gap size and intumescent sealants

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