Evaluation of cyclic bond-slip behavior of smooth bars in low strength concrete: An experimental and stochastic study
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25510%2F22%3A39918832" target="_blank" >RIV/00216275:25510/22:39918832 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1016/j.istruc.2022.05.036" target="_blank" >https://doi.org/10.1016/j.istruc.2022.05.036</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.istruc.2022.05.036" target="_blank" >10.1016/j.istruc.2022.05.036</a>
Alternative languages
Result language
angličtina
Original language name
Evaluation of cyclic bond-slip behavior of smooth bars in low strength concrete: An experimental and stochastic study
Original language description
The vulnerability of non-engineered/substandard reinforced concrete (RC) members could arise from the bondslip failure due to low interaction between the smooth bar and poor-quality (low-strength) concrete. Therefore, the cyclic bond-slip response of plain round bars in poor-quality concrete is characterized by experimental and stochastic approaches. To this end, beam-type bond-slip specimens are first exposed to quasi-static cyclic loading. Then, mathematical models are derived from the experimental hysteric responses. Inherent uncertainties in nominally identical tests reveal the high scatter in the response parameters. Therefore, finite element (FE) models generated by implementing the proposed mathematical expressions for bond-slip response are combined with a suitable stochastic sampling technique, which is Latin Hypercube Sampling (LHS). The apparent outcome is the set of load-displacement curves, which formed an envelope around the deterministic model. The peak capacity is captured satisfactorily by the stochastic-numerical models whereas the overall cyclic response is reproduced less accurately. The evaluated bond stress values and corresponding slips in the confined concrete are higher than the ones in the unconfined concrete. Moreover, the cyclic excitation impacts on the bond strength are more recognizable than monotonic loading. The sensitivity analysis, which grades the contribution of the material parameters on the global response, points out the tensile strength of concrete fct as the most significant parameter while the remaining ones have a weak or no influence.
Czech name
—
Czech description
—
Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
20102 - Construction engineering, Municipal and structural engineering
Result continuities
Project
—
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Structures
ISSN
2352-0124
e-ISSN
2352-0124
Volume of the periodical
41
Issue of the periodical within the volume
Neuveden
Country of publishing house
US - UNITED STATES
Number of pages
18
Pages from-to
568-585
UT code for WoS article
000806170700002
EID of the result in the Scopus database
2-s2.0-85130904082