Elasto-plastic progressive collapse analysis based on the integration of the equations of motion
Authors:
- S. Yu. Fialko,
- O. V. Kabantsev,
- A. V. Perelmuter
Abstract
This paper considers the progressive collapse analysis of reinforced concrete structures based on the sudden removal of a load-bearing structural element and simulation of the dynamic structural behavior, taking into account the elasto-plastic properties of the material and the degradation of concrete during cracking. A specially developed finite element library is used, which includes triangular and quadrilateral shell finite elements of medium thickness, and a two-node finite element of a spatial frame, which take into account the discrete arrangement of reinforcement and various elasto-plastic material models for concrete and reinforcement. The novelty of the proposed approach lies in the formulation of both: the spatial frame and shell finite elements as a three-dimensional solid body with sequential application of the conventional hypothesis of the for Mindlin-Reissner shells of medium thickness, Timoshenko beams, and the elasto-plastic constitutive models. This makes it possible to achieve sufficiently high reliability of the results for engineering analysis, and on the other hand, a relatively simple implementation, which makes it possible to perform an elasto-plastic dynamic analysis of the entire design model of the structure, and not a separate fragment, in real-time from the point of view of practical design. This approach is free from assumptions related to the introduction of a dynamic amplification factor into the quasi-static analysis, which is widely used to solve such problems. The paper provides a numerical example illustrating the effectiveness of using a special structure – an outrigger storey, to prevent progressive collapse, and a comparison of the nonlinear dynamic analysis and the linear one.
- Record ID
- CUTb9270939fc9c407abc53feb2aee3c35c
- Publication categories
- ;
- Author
- Journal series
- Magazine of Civil Engineering, ISSN 2712-8172
- Issue year
- 2021
- No
- 102 (2)
- Pages
- [1-10]
- Article number
- 10214
- Other elements of collation
- wykr.; rys.; schem.; Bibliografia (na s.) - 9-10; Bibliografia (liczba pozycji) - 37; Oznaczenie streszczenia - Abstr.; Numeracja w czasopiśmie - Iss. 102 (2)
- Keywords in English
- progressive collapse, reinforced concrete structures, numerical analysis, finite element method, nonlinear dynamics
- DOI
- DOI:10.34910/MCE.102.14 Opening in a new tab
- URL
- https://engstroy.spbstu.ru/en/article/2021.102.14/ Opening in a new tab
- Language
- eng (en) English
- License
- Score (nominal)
- 40
- Uniform Resource Identifier
- https://cris.pk.edu.pl/info/article/CUTb9270939fc9c407abc53feb2aee3c35c/
- URN
urn:pkr-prod:CUTb9270939fc9c407abc53feb2aee3c35c
* presented citation count is obtained through Internet information analysis, and it is close to the number calculated by the Publish or PerishOpening in a new tab system.