Numerical assessment of the response of a heterogeneous concrete-based composite bridge deck to a near field explosion

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21110%2F20%3A00342933" target="_blank" >RIV/68407700:21110/20:00342933 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1016/j.engstruct.2020.111206" target="_blank" >https://doi.org/10.1016/j.engstruct.2020.111206</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.engstruct.2020.111206" target="_blank" >10.1016/j.engstruct.2020.111206</a>

Result language

angličtina

Original language name

Numerical assessment of the response of a heterogeneous concrete-based composite bridge deck to a near field explosion

Original language description

This paper reports on numerical assessment of the blast response of a heterogeneous composite structure using LS-DYNA solver. There experimentally observed effect of heterogeneity on the overall response of the structure is numerically assessed. Multiple approaches to the introduction of material heterogeneity are proposed, modelled and tested. The numerical results are confronted with the authors’ original experimental program on a full-scale concrete structure subjected to a near field explosion. Tests were carried out on a total of three specimens. All the specimens were subjected to the same close-in blast loading from 25 kg TNT charges placed on steel chairs in the middle of each slab. The chairs provided 450 mm standoff from the top surface of the slab. Two of the analyzed specimens were reinforced concrete slabs 6 m in length, 1.5 m in width and 0.3 m in thickness. The first specimen contained basalt fiber meshes in multiple layers along the depth of the specimen. The second specimen contained two layers of recycled textile sheets 100 mm in total thickness. The third specimen was a commercial hollow-core precast prestressed panel 6 m in length, 1.2 m in width and 0.32 m in thickness. The paper aims to verify and explain the experimental findings. It was numerically proved that the highly heterogeneous concrete-based composite bridge decks consume the blast energy by layer delamination in the pre-determined damage zones. The findings are supported by PDV measurements.

Czech name

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Czech description

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Type

J_SC - Article in a specialist periodical, which is included in the SCOPUS database

CEP classification

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OECD FORD branch

20101 - Civil engineering

Project

<a href="/en/project/GA17-23067S" target="_blank" >GA17-23067S: Performance of concrete subjected to blast and subsequent fire loading</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2020

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Engineering Structures

ISSN

0141-0296

e-ISSN

1873-7323

Volume of the periodical

225

Issue of the periodical within the volume

December

Country of publishing house

GB - UNITED KINGDOM

Number of pages

17

Pages from-to

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UT code for WoS article

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EID of the result in the Scopus database

2-s2.0-85090361197