Methodology proposal for an evaluation of concrete prestressed structures


Vol. 544 (12) 2017 / poniedziałek, 18 lutego, 2019
[in Polish]

K. Szczurowski,
T. Krzyżyński

DOI: 10.15199/33.2017.12.19

Volume 544: Issue 12
Pages 63-65
Accepted for publication: 27.10.2017 r.

Most of the used in practice methods of prestressed concrete state identification aim at a detection of cracks, inclusions, corrosion or other small damages which can occurred in the structures. Such methods are targeted at detecting of their localization, e.g. a corrosion in strings or reinforcement bars and the concrete, a placement of cracks in the concrete or the bars, or other defects. On the basis of such an information it is possible to estimate an importance of the imperfections on the state of the whole structure.Additionally, such a procedure is time-consuming because the experimental investigation can be made for selected parts of the structure. In the present paper we propose an alternative approach consisting an observation of changes in dynamical characteristics of construction elements, due to a change in a structure of internal stresses.

Keywords: prestressed concrete, state identification, vibrations and waves.
    [1] Barczewski Roman. 2007. „Vibroacoustic monitoring. Amplitude modulation phenomena as the source of diagnostic information about technical state of prestressed structure”. COST 534 Action Final Report.
    [2] Dybała Jacek, Krzysztof Szczurowski. 2016. „Vibrodiagnostics of Pre-Stressed Structures: A Pattern Recognition Based Approach.” Machine Dynamics Research, Machine Dynamics Research, 40 (2): 33 – 42.
    [3] Gołaski Leszek, Grzegorz Świt. 2005. „Acoustic non-destructive techniques as a new method for evaluation of damages in prestressed concrete structures: failure of concrete structures”. Second Workshop of COST on NTD assessment and new systems in prestressed concrete structures. Kielce. COST Action 534 New materials and systems for prestressed concrete structures: 151 – 159.
    [4] Kwun Hegeon, M. Teller II Cecil. 1994. „Detection of fractured wires in steel cables using magnetostrictive sensors”. Materials Evaluation 52: 503 – 507.
    [5] Radkowski Stanisław, Krzysztof Szczurowski. 2012. „Use of vibroacoustic signals for diagnosis of prestressed structures”. Eksploatacja i niezawodność 14 (1): 82 – 88.
    [6] Runkiewicz Leonard. 2002 Badania Konstrukcji Żelbetowych. Warszawa. Biuro Gamma.
    [7] Travers Fred. 1994. „Acoustic monitoring of prestressed concrete pipe at the aguafria river siphon”. Report No. R-94-17. Colorado, U.S. Department of the Interior, Bureau of Reclamation. Denver.
dr inż. Krzysztof Szczurowski, Politechnika Warszawska, Wydział Samochodów i Maszyn Roboczych

prof. dr hab. inż. Tomasz Krzyżyński, Jesbet sp. z o.o.