Numerical Investigation on Detection of Prestress Losses in a Prestressed Concrete Slab by Modal Analysis

IOP Conference Series: Materials Science and Engineering 2017
Andrejs Kovaļovs, Sandris Ručevskis, Pāvels Akišins, Jevgenijs Kolupajevs

The paper presents numerical results of loss of prestress in the reinforced prestressed precast hollow core slabs by modal analysis. Loss of prestress is investigated by the 3D finite element method, using ANSYS software. In the numerical examples, variables initial stresses were introduced into seven-wire stress-relieved strands of the concrete slabs. The effects of span and material properties of concrete on the modal frequencies of the concrete structure under initial stress were studied. Modal parameters computed from the finite element models were compared. Applicability and effectiveness of the proposed method was investigated.

Keywords
prestress, concrete, modal analysis
DOI
10.1088/1757-899X/251/1/012090
Hyperlink
http://iopscience.iop.org/issue/1757-899X/251/1

Kovaļovs, A., Ručevskis, S., Akišins, P., Kolupajevs, J. Numerical Investigation on Detection of Prestress Losses in a Prestressed Concrete Slab by Modal Analysis. In: IOP Conference Series: Materials Science and Engineering, Latvia, Riga, 27-29 September, 2017. IOP Publishing: IOP Publishing, 2017, pp.012090-012090. ISSN 1757-8981. e-ISSN 1757-899X. Available from: doi:10.1088/1757-899X/251/1/012090

Publication language
English (en)