Dynamics of a Slab in the Roof of a Buried Structure When the Stiffness of its Supports is Varied
An approach to the assessment of the dynamic behaviour of the floor slab of a buried structure is proposed. The estimation of the limiting dynamic load at changing the stiffness of the slab support nodes is performed. The design of supports in the form of crumpled inserts made of electric-welded ste...
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| Main Author: | |
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| Format: | Article |
| Language: | English |
| Published: |
Moscow State University of Civil Engineering (MGSU)
2024-12-01
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| Series: | Железобетонные конструкции |
| Subjects: | |
| Online Access: | https://www.g-b-k.ru/jour/article/view/60 |
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| Summary: | An approach to the assessment of the dynamic behaviour of the floor slab of a buried structure is proposed. The estimation of the limiting dynamic load at changing the stiffness of the slab support nodes is performed. The design of supports in the form of crumpled inserts made of electric-welded steel pipe is considered. When building the fibre concrete model, volumetric finite elements were used, coupling with reinforcement was taken into account by using interpolation elements, steel reinforcement was represented as an ideal elastoplastic body. The impulsive impact was represented as a multiplication of a constant and a series of time-varying unit functions. The effect of the presence of damping supports in the perception of dynamic impact with the direction of propagation across the span of the slab was analysed. The results of the research can be used in the design of coverings of buried buildings and structures. |
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| ISSN: | 2949-1622 2949-1614 |