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2022 | OriginalPaper | Buchkapitel

Response of Two-Way RCC Slab with Unconventionally Placed Reinforcements Under Contact Blast Loading

verfasst von : Qurat ul Ain, Mehtab Alam, S. M. Anas

Erschienen in: Advances in Structural Mechanics and Applications

Verlag: Springer International Publishing

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Abstract

Failure of building structures by blast-induced loading is quite common and is of considerable interest. Consequences of blast loading may result in the progressive collapse of the buildings and as noticed by a number of researchers, some elements of reinforced concrete structures subjected to such extreme loading of short duration may not respond with plastic behaviour at mid-span and fail by suffering severe damage. In order to control the explosive induced damage, it is indispensable to comprehend response of the structural elements under such intensive loadings. A plate element is considered to represent slab and wall in a structure. With this concern, a finite element model of a slab reinforced with conventional rebar mesh has been developed and validated using the ABAQUS/CAE software. To improve the blast resistance of the two-way concrete slab, the slab models are provided with the same reinforcement ratio in three layers with first- and third-layer having layouts of (a) 60° and 120°, (b) 45° and 135°, and (c) 30° and 150°. Finite element simulations are executed to scrutinize the effect of layout of the reinforcements in the slab and compared their blast performance with the conventionally reinforced one. CDP, damage plasticity model with strain rate effects has been invoked in this work. Maximum displacement, damage dissipation energy, and crack patterns have been evaluated and discussed.

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Titel: Response of Two-Way RCC Slab with Unconventionally Placed Reinforcements Under Contact Blast Loading
verfasst von: Qurat ul Ain
Mehtab Alam
S. M. Anas
Verlag: Springer International Publishing
Buch: Advances in Structural Mechanics and Applications
Print ISBN: 978-3-031-04792-3

Electronic ISBN: 978-3-031-04793-0

Copyright-Jahr: 2022
DOI: https://doi.org/10.1007/978-3-031-04793-0_17

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