1. bookVolume 65 (2021): Issue 3 (November 2021)
Journal Details
License
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Journal
eISSN
1804-1213
First Published
03 Apr 2012
Publication timeframe
4 times per year
Languages
English
access type Open Access

Anchorage length of patented wire cables in prestressed bridge girders

Published Online: 30 Dec 2021
Page range: 92 - 96
Journal Details
License
Format
Journal
eISSN
1804-1213
First Published
03 Apr 2012
Publication timeframe
4 times per year
Languages
English
Abstract

This paper briefly describes the methodology, performance and the obtained results of unique experiments performed on original I-73 precast bridge girders. The main objective of the experiments was to determine the actual anchorage length of corroded-through fully grouted prestressing reinforcement (prestressing wires), which is important for determination of the residual load-bearing capacity of prestressed structures. Observation probes leading all the way to the prestressing wires were drilled on selected sections of the girders along the length of the prestressing reinforcement. Optical image acquisition devices were then installed at these probes. Subsequently, controlled breakage of the patented wires (corrosion failure simulation) and observation of the changes that occurred in the prestressing wires after relief of stress were carried out. Evaluation of the experiments was then performed by analyzing the images obtained before and after the prestressing reinforcement failure.

1. Konštrukce cestných a diaľničných mostov z prefabrikátov I-73 dĺžky 21-30 m, Typový podklad, Dopravoprojekt, Bratislava 1973. Search in Google Scholar

2. EN 1992-1-1 Eurocode 2: Design of concrete structures – Part 1-1: General rules and rules for buildings, European Committee for Standardization, Brussels 2004. Search in Google Scholar

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