Generalised fracture mechanics approach to the interfacial failure analysis of a bonded steel-concrete joint

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F17%3A00481496" target="_blank" >RIV/68081723:_____/17:00481496 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.3221/IGF-ESIS.42.16" target="_blank" >http://dx.doi.org/10.3221/IGF-ESIS.42.16</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3221/IGF-ESIS.42.16" target="_blank" >10.3221/IGF-ESIS.42.16</a>

Result language

angličtina

Original language name

Generalised fracture mechanics approach to the interfacial failure analysis of a bonded steel-concrete joint

Original language description

Steel-concrete joints are often made by welded shear studs. However, this connection reduces the fatigue strength, especially in situations where locally concentrated loads occur with a large number of load cycles e.g. in bridge decks. In this paper the shear bond strength between steel and ultra-high performance concrete (UHPC) without welded mechanical shear connectors is evaluated through push-out tests and a generalized fracture mechanics approach based on analytical and finite element analyses. The connection is achieved by an epoxy adhesive layer gritted with granules. In the tests, specimens made with various manners of preparation of the epoxy interlayer are tested experimentally. Numerical-analytical 2D and 3D modelling of a steel-concrete connection is performed without and with the epoxy interlayer. The model of a bi-material notch with various geometrical and material properties is used to simulate various singular stress concentrators that can be responsible for failure initiation. Thus conditions of crack initiation can be predicted from knowledge of the standard mechanical and fracture-mechanics properties of particular materials. Results of the fracture-mechanics studies are compared with each other and with experimental results. On the basis of the comparison, the 2D simulation of the steel-concrete connection without the epoxy interlayer is shown to be suitable for the estimation of failure conditions.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

20306 - Audio engineering, reliability analysis

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2017

Confidentiality

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

Name of the periodical

Frattura ed Integrita Strutturale

ISSN

1971-8993

e-ISSN

—

Volume of the periodical

11

Issue of the periodical within the volume

42

Country of publishing house

IT - ITALY

Number of pages

14

Pages from-to

147-160

UT code for WoS article

000423952200016

EID of the result in the Scopus database

2-s2.0-85030762463