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Punching shear strength of waffle flat slabs with opening adjacent to elongated columns
https://orcid.org/0000-0001-7231-8710
https://orcid.org/0000-0002-6876-271X
Highlights It’s desirable the use of approximation factors to correct theorical results; It was determined a method and parameters for simulations in the ABAQUS/CAE; The Resistance in this slabs is substantially dependent of the column dimensions; The number and the increase of the dimensions of the openings aren’t too influent;
Abstract A series of 15 reinforced concrete waffle flat slabs with openings adjacent to rectangular columns was subjected to symmetrical punching tests until failure. All square slabs were 2300 mm side and 150 mm height, with different configurations for columns and openings. The largest side of the columns and openings was up to 5 and 4 times the smaller side (120 mm), respectively. The results showed that the openings really affect the behavior of the slabs, penalizing the punching shear strength, mainly of the slabs with smaller columns, and little influence of the quantity and length of the openings was observed. A non-linear finite element analysis predicted failure loads satisfactorily when compared to experimental ones, with average of 1.01 and coefficient of variation of 0.11, and statistical factors were found and improved estimates for failure loads with accuracy gain of 36% for Model Code 2010 and becoming the Brazilian code safer.
Punching shear strength of waffle flat slabs with opening adjacent to elongated columns
https://orcid.org/0000-0001-7231-8710
https://orcid.org/0000-0002-6876-271X
Highlights It’s desirable the use of approximation factors to correct theorical results; It was determined a method and parameters for simulations in the ABAQUS/CAE; The Resistance in this slabs is substantially dependent of the column dimensions; The number and the increase of the dimensions of the openings aren’t too influent;
Abstract A series of 15 reinforced concrete waffle flat slabs with openings adjacent to rectangular columns was subjected to symmetrical punching tests until failure. All square slabs were 2300 mm side and 150 mm height, with different configurations for columns and openings. The largest side of the columns and openings was up to 5 and 4 times the smaller side (120 mm), respectively. The results showed that the openings really affect the behavior of the slabs, penalizing the punching shear strength, mainly of the slabs with smaller columns, and little influence of the quantity and length of the openings was observed. A non-linear finite element analysis predicted failure loads satisfactorily when compared to experimental ones, with average of 1.01 and coefficient of variation of 0.11, and statistical factors were found and improved estimates for failure loads with accuracy gain of 36% for Model Code 2010 and becoming the Brazilian code safer.
Punching shear strength of waffle flat slabs with opening adjacent to elongated columns
https://orcid.org/0000-0001-7231-8710
https://orcid.org/0000-0002-6876-271X
Highlights It’s desirable the use of approximation factors to correct theorical results; It was determined a method and parameters for simulations in the ABAQUS/CAE; The Resistance in this slabs is substantially dependent of the column dimensions; The number and the increase of the dimensions of the openings aren’t too influent;
Abstract A series of 15 reinforced concrete waffle flat slabs with openings adjacent to rectangular columns was subjected to symmetrical punching tests until failure. All square slabs were 2300 mm side and 150 mm height, with different configurations for columns and openings. The largest side of the columns and openings was up to 5 and 4 times the smaller side (120 mm), respectively. The results showed that the openings really affect the behavior of the slabs, penalizing the punching shear strength, mainly of the slabs with smaller columns, and little influence of the quantity and length of the openings was observed. A non-linear finite element analysis predicted failure loads satisfactorily when compared to experimental ones, with average of 1.01 and coefficient of variation of 0.11, and statistical factors were found and improved estimates for failure loads with accuracy gain of 36% for Model Code 2010 and becoming the Brazilian code safer.
Punching shear strength of waffle flat slabs with opening adjacent to elongated columns
Aguiar, Amaury (author) / Oliveira, Denio (author) / Reis, Luciano (author) / Nzambi, Aaron (author)
Engineering Structures ; 243
2021-05-26
Article (Journal)
Electronic Resource
English
Eccentric Punching on Edge Waffle Slabs
| TIBKAT | 2021
Eccentric Punching on Edge Waffle Slabs
| Springer Verlag | 2021