Lessons from the Sampoong department store collapse

Gardner, N. J.; Huh, Jungsuck; Chung, Lan

doi:10.1016/s0958-9465(01)00068-3

Cited by 88 publications

(41 citation statements)

References 4 publications

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“…A linear relationship was also observed between the energy absorption capacity, U RPT,40 , of SFRSCC assessed by round panel tests and P max . This indicates that the performance of the SFRSCC slabs can be estimated by using this type of tests that are adopted for the material characterization and quality control; -Based on the results from the punching tests, a concrete of f cm between 50 and 70 MPa reinforced with a volume of about 1% of hooked ends steel fibres can assure a flexural failure mode and a very ductile behaviour, as long as a fibre type is selected that avoid fibre rupture; -In this type of SFRSCC the average values of f R,1 and f R, 3 have varied between 11e13 MPa and 12e13 MPa, respectively, representing these values the flexural resistance for a crack width of 0.5 mm and 2.5 mm. This type of SFRSCC has provided an increase in terms of load carrying capacity ranging between 12 and 24%, depending on the f cm , with the tendency of increasing with the f R,i and f cm , as expected; -In terms of maximum deflection at failure, the increase provided by this type of SFRSCC has varied between 72% and 102%, with also the tendency of increasing with the f R,i and f cm .…”

Section: Discussionmentioning

confidence: 99%

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Assessment of the effectiveness of steel fibre reinforcement for the punching resistance of flat slabs by experimental research and design approach

Barros

Neto

Melo

et al. 2015

Composites Part B: Engineering

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a b s t r a c tThe present paper deals with the experimental assessment of the effectiveness of steel fibre reinforcement in terms of punching resistance of centrically loaded flat slabs, and to the development of an analytical model capable of predicting the punching behaviour of this type of structures. For this purpose, eight slabs of 2550 Â 2550 Â 150 mm 3 dimensions were tested up to failure, by investigating the influence of the content of steel fibres (0, 60, 75 and 90 kg/m 3 ) and concrete strength class (50 and 70 MPa). Two reference slabs without fibre reinforcement, one for each concrete strength class, and one slab for each fibre content and each strength class compose the experimental program. All slabs were flexurally reinforced with a grid of ribbed steel bars in a percentage to assure punching failure mode for the reference slabs. Hooked ends steel fibres provided the unique shear reinforcement. The results have revealed that steel fibres are very effective in converting brittle punching failure into ductile flexural failure, by increasing both the ultimate load and deflection, as long as adequate fibre reinforcement is assured. An analytical model was developed based on the most recent concepts proposed by the fib Mode Code 2010 for predicting the punching resistance of flat slabs and for the characterization of the behaviour of fibre reinforced concrete. The most refined version of this model was capable of predicting the punching resistance of the tested slabs with excellent accuracy and coefficient of variation of about 5%.

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Section: Discussionmentioning

confidence: 99%

“…In spite of the economic advantages of this type of slabs, several dramatic disasters have occurred due to the punching failure [3]. In fact punching can trigger the progressive collapse of the slabs, resulting in a total collapse of a building.…”

Section: Introductionmentioning

confidence: 99%

Assessment of the effectiveness of steel fibre reinforcement for the punching resistance of flat slabs by experimental research and design approach

Barros

Neto

Melo

et al. 2015

Composites Part B: Engineering

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“…There are also a number of recent international cases of interest. These in clude the Sampoong Super Store collapse in Seoul, Republic of Korea [14], and the Laval, Quebec, Canada bridge overpass col lapse [15].…”

Section: Landmark Structural Failuresmentioning

confidence: 99%

Failure literacy in structural engineering

Delatte

2010

Engineering Structures

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“…This leads to the redistribution of loads to the surrounding elements, which can collapse as well. In national and international literature there are several cases of serious structural accidents in buildings with concrete structure (Kamari et al [2], Schellhammer et al [3], King and Delatte [4], Gardner et al [5]). Souza and Araújo [6] highlight that in Brazil, the amount of structural accidents is increasing and that their origins are mainly related to mistakes in design and construction stages.…”

Section: Introductionmentioning

confidence: 99%

Effect of wind in the design of reinforced concrete buildings

Tapajós

Ferreira

Neto

et al. 2016

Rev. IBRACON Estrut. Mater.

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ResumoThis paper presents the results from a parametric study carried in order to quantify how far errors in the design stage related to the consideration of the wind action may put at risk the response and safety of reinforced concrete buildings. Using an architectural model as reference and varying the number of floors of the building, the structural safety was evaluated as a function of the wind action intensity. Results showed that even for low-rise buildings, with 10 floors, ignoring the wind action can significantly jeopardize their behaviour and safety. Yet, for slenderer buildings, up to 30 floors, it can lead to catastrophic results, as the ruin of the structure by progressive collapse.Keywords: wind, columns, reinforced concrete, buildings.Este artigo apresenta os resultados de um estudo paramétrico realizado com o objetivo de quantificar o tanto que erros na etapa de projeto relacionados com a consideração da ação do vento podem comprometer a resposta em serviço e a segurança de edifícios de concreto armado. Usando-se um modelo arquitetônico como referência e variando-se o número de pavimentos do edifício, a segurança estrutural foi avaliada como uma função da intensidade da ação do vento. Os resultados mostraram que mesmo para edifícios baixos, com 10 pavimentos, a desconsideração da ação do vento pode comprometer significativamente o comportamento e a segurança e que no caso de edifícios mais esbeltos, com até 30 pavimentos, pode levar a resultados catastróficos, como a ruína da estrutura através de colapso progressivo.Palavras-chave: vento, pilares, concreto armado, edifícios.

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Lessons from the Sampoong department store collapse

Cited by 88 publications

References 4 publications

Assessment of the effectiveness of steel fibre reinforcement for the punching resistance of flat slabs by experimental research and design approach

Assessment of the effectiveness of steel fibre reinforcement for the punching resistance of flat slabs by experimental research and design approach

Failure literacy in structural engineering

Effect of wind in the design of reinforced concrete buildings

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