Numerical Study on the Behavior and Bearing Mechanism of Flat Slabs in Column Loss Events
This study investigates the behavior and the load-bearing mechanism of a typical flat slab with rectangular panels in several scenarios including the removal of a corner, penultimate, and internal columns. The scenarios are rather similar to those used in the conventional evaluation of the progressi...
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| Format: | Article |
| Language: | English |
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Wiley
2021-01-01
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| Series: | Advances in Civil Engineering |
| Online Access: | http://dx.doi.org/10.1155/2021/8834638 |
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| author | Aidin Mohammadi Alireza Pachenari Behnam Sadeghi |
| author_facet | Aidin Mohammadi Alireza Pachenari Behnam Sadeghi |
| author_sort | Aidin Mohammadi |
| collection | DOAJ |
| description | This study investigates the behavior and the load-bearing mechanism of a typical flat slab with rectangular panels in several scenarios including the removal of a corner, penultimate, and internal columns. The scenarios are rather similar to those used in the conventional evaluation of the progressive collapse potential; however, application of the uniformly distributed loading over panels adjacent to the removed columns was not limited to twice the value of the initial load. Thus, load-deflection curves were drawn up to the point in which a great number of longitudinal slab bars ruptured. Introducing 5 stages on each curve, finite element outputs on concrete cracking pattern and rebar stress state were presented. A significant increase in the stresses along the diagonals of the slab panels accompanied by bar ruptures around columns adjacent to the removed column proved contribution of an important load-bearing mechanism in addition to the behavior called “quasiframe action.” Consecutive rupture of bars showed formation of a zipper-type collapse mode as well as a great tendency to transfer load share of missing column mainly along shorter direction of slab panels. Moreover, the findings indicated that the slab damaged zone could exceed the panels under uniform overloading. |
| format | Article |
| id | doaj-art-c7176166650f4e1bb3ec383851d8f3d6 |
| institution | OA Journals |
| issn | 1687-8086 1687-8094 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Civil Engineering |
| spelling | doaj-art-c7176166650f4e1bb3ec383851d8f3d62025-08-20T02:19:44ZengWileyAdvances in Civil Engineering1687-80861687-80942021-01-01202110.1155/2021/88346388834638Numerical Study on the Behavior and Bearing Mechanism of Flat Slabs in Column Loss EventsAidin Mohammadi0Alireza Pachenari1Behnam Sadeghi2Department of Civil Engineering, Faculty of Engineering, University of Kashan, Kashan, IranDepartment of Civil Engineering, Faculty of Engineering, University of Kashan, Kashan, IranDepartment of Civil Engineering, Faculty of Engineering, University of Kashan, Kashan, IranThis study investigates the behavior and the load-bearing mechanism of a typical flat slab with rectangular panels in several scenarios including the removal of a corner, penultimate, and internal columns. The scenarios are rather similar to those used in the conventional evaluation of the progressive collapse potential; however, application of the uniformly distributed loading over panels adjacent to the removed columns was not limited to twice the value of the initial load. Thus, load-deflection curves were drawn up to the point in which a great number of longitudinal slab bars ruptured. Introducing 5 stages on each curve, finite element outputs on concrete cracking pattern and rebar stress state were presented. A significant increase in the stresses along the diagonals of the slab panels accompanied by bar ruptures around columns adjacent to the removed column proved contribution of an important load-bearing mechanism in addition to the behavior called “quasiframe action.” Consecutive rupture of bars showed formation of a zipper-type collapse mode as well as a great tendency to transfer load share of missing column mainly along shorter direction of slab panels. Moreover, the findings indicated that the slab damaged zone could exceed the panels under uniform overloading.http://dx.doi.org/10.1155/2021/8834638 |
| spellingShingle | Aidin Mohammadi Alireza Pachenari Behnam Sadeghi Numerical Study on the Behavior and Bearing Mechanism of Flat Slabs in Column Loss Events Advances in Civil Engineering |
| title | Numerical Study on the Behavior and Bearing Mechanism of Flat Slabs in Column Loss Events |
| title_full | Numerical Study on the Behavior and Bearing Mechanism of Flat Slabs in Column Loss Events |
| title_fullStr | Numerical Study on the Behavior and Bearing Mechanism of Flat Slabs in Column Loss Events |
| title_full_unstemmed | Numerical Study on the Behavior and Bearing Mechanism of Flat Slabs in Column Loss Events |
| title_short | Numerical Study on the Behavior and Bearing Mechanism of Flat Slabs in Column Loss Events |
| title_sort | numerical study on the behavior and bearing mechanism of flat slabs in column loss events |
| url | http://dx.doi.org/10.1155/2021/8834638 |
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