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PĚKNÍK, R. KLUSÁČEK, L.
Original Title
Restoration of arch bridge by additional horizontal prestressing
Type
conference paper
Language
English
Original Abstract
The general focus of the paper is to show a method of strengthening arch bridge that has longitudinal cracks. The process is done by new reinforced concrete spandrel walls stabilized by transverse prestressed monostrands. Specifically, the paper is aimed at the reconstruction of the brick arch railway bridge, which was in disrepair. At the beginning of the design work it had to be decided whether it would be effective to carry out reconstruction of the existing bridge, or to accede to build a new bridge on the existing place. For the decision-making process there was a comprehensive diagnostic survey made - the survey of experimental measurement of modulus and strain measurement masonry walls in the crown during the operational load using tough half-frames (ribes). After evaluating the measurement, it has been recommended to do reconstruction. After the work was done, new measurements were done during the operational load when the measured values should confirm the effectiveness and appropriateness of reconstruction. After the evaluation the strain of the top cross-section reduced to 40% of the values before amplification. The text will also be given a numerical model and its’ calibration using the measured values of the deformation of the top section.
Keywords
arch bridge, horizontal prestressing, masonry, deflection, strain
Authors
PĚKNÍK, R.; KLUSÁČEK, L.
Released
5. 6. 2017
Publisher
Faculty of Civil Engineering, Silesian University of Technology
Location
Gliwice, Poland
ISBN
978-83-7880-460-4
Book
ADVANCES IN CONCRETE AND MASONRY STRUCTURES - Keynote Lectures & Abstracts, 9th International Conference AMCM` 2017
Edition number
1
Pages from
97
Pages to
98
Pages count
2
BibTex
@inproceedings{BUT136810, author="Robin {Pěkník} and Ladislav {Klusáček}", title="Restoration of arch bridge by additional horizontal prestressing", booktitle="ADVANCES IN CONCRETE AND MASONRY STRUCTURES - Keynote Lectures & Abstracts, 9th International Conference AMCM` 2017", year="2017", number="1", pages="97--98", publisher="Faculty of Civil Engineering, Silesian University of Technology", address="Gliwice, Poland", isbn="978-83-7880-460-4" }