Abstract
A correct choice of a bond model for prestressing tendons is crucial for the right modelling of a structural behaviour of a pretensioned concrete structure. The aim of this paper is the determination of an optimal bond model for 7-wire strands in a prestressed concrete beam produced in a precast concrete plant of Consolis Poland. ATENA 3D is used to develop finite element models of the beam that differ only in a bond stress-slip relationship of tendons. The bond stress-slip relationships for modelling are taken from the results of bond tests carried out by different researchers in previous yearsMoreover, for comparison purposes, a simplified 2D model of the beam is created in Autodesk RobotThe strain distribution at the time of the strand release is found for each of the finite element modelsThe determined strain distributions are compared with the strain distribution in the beam established by an experimental test using a measuring system based on a digital image correlation. On the basis of the comparison results, the most appropriate bond models for 7-wire strands used in the beam are identified.
| Original language | English |
|---|---|
| Pages (from-to) | 740-748 |
| Number of pages | 9 |
| Journal | Acta Polytechnica |
| Volume | 61 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - 31 Dec 2021 |
Keywords
- Bond stress-slip relationship
- Digital image correlation
- End zone
- Prestressed concrete
- Pretensioned concrete beam
- Strand release
ASJC Scopus subject areas
- General Engineering
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