<abstract xmlns="http://www.w3.org/1999/xhtml">

<p>Knowledge of prestressing force’s value is in the case of prestressed concrete structure the most important basis for defining load-carrying capacity and remaining service life. Numbers of prestressed concrete structures are about to reach their limit of service life and they are exhibiting signs of deterioration due to the conceptional errors, inadequate maintenance and environmental distress. All of these factors negatively influence the actual state of prestressing. Thus, it is essential to determine the value of prestressing force considering the degradation of materials, such as corrosion of prestressing strands or wires. While assessing structure in service, it is difficult to apply magnetoelastic sensors or use other direct methods for determining the state of prestressing. Hence, the indirect methods enable to analytically calculate the prestressing force based on the results of measurement, e.g. strain, stress, deflection, or width of the crack. The present paper focuses on numerical analysis of prestressing in a twosome of precast prestressed concrete beams. For the numerical analysis, two indirect methods are applied, specifically Saw-cut method and Crack initiation method. Finally, the results are discussed and recommendations for the experimental campaign are summarized.</p>
</abstract>

Knowledge of prestressing force’s value is in the case of prestressed concrete structure the most important basis for defining load-carrying capacity and remaining service life. Numbers of prestressed concrete structures are about to reach their limit of service life and they are exhibiting signs of deterioration due to the conceptional errors, inadequate maintenance and environmental distress. All of these factors negatively influence the actual state of prestressing. Thus, it is essential to determine the value of prestressing force considering the degradation of materials, such as corrosion of prestressing strands or wires. While assessing structure in service, it is difficult to apply magnetoelastic sensors or use other direct methods for determining the state of prestressing. Hence, the indirect methods enable to analytically calculate the prestressing force based on the results of measurement, e.g. strain, stress, deflection, or width of the crack. The present paper focuses on numerical analysis of prestressing in a twosome of precast prestressed concrete beams. For the numerical analysis, two indirect methods are applied, specifically Saw-cut method and Crack initiation method. Finally, the results are discussed and recommendations for the experimental campaign are summarized.

Analysis of Prestressing in Precast Prestressed Concrete Beams

Department of Structures and Bridges, Faculty of Civil Engineering

Civil and Environmental Engineering

This work is licensed under the Creative Commons Attribution 4.0 International License.

{"article-title":"Analysis of Prestressing in Precast Prestressed Concrete Beams"}

Knowledge of prestressing force’s value is in the case of prestressed concrete structure the most important basis for defining load-carrying capacity and...

Analysis of Prestressing in Precast Prestressed Concrete Beams

Publié en ligne: 22 juin 2021

Pages: 184 - 191

DOI: https://doi.org/10.2478/cee-2021-0019

Mots clés
Prestressed concrete, Prestressing force, Precast prestressed concrete beam, Saw-cut method, Crack initiation method

© 2021 Jakub Kraľovanec et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Analysis of Prestressing in Precast Prestressed Concrete Beams

Publié en ligne: 22 juin 2021

Pages: 184 - 191

DOI: https://doi.org/10.2478/cee-2021-0019

Mots clésPrestressed concrete, Prestressing force, Precast prestressed concrete beam, Saw-cut method, Crack initiation method

© 2021 Jakub Kraľovanec et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Mots clés
Prestressed concrete, Prestressing force, Precast prestressed concrete beam, Saw-cut method, Crack initiation method