eprintid: 11457
rev_number: 10
eprint_status: archive
userid: 1903
dir: disk0/00/01/14/57
datestamp: 2012-09-21 05:43:32
lastmod: 2018-05-31 13:13:12
status_changed: 2012-09-21 05:43:32
type: article
metadata_visibility: show
item_issues_count: 0
creators_name: Suárez Guerra, Fernando
creators_name: Gálvez Ruiz, Jaime
creators_id: jaime.galvez@upm.es
title: Stress relaxation losses of prestressing steel wires
ispublished: pub
subjects: informatica
subjects: fisica
abstract: Prestressed structures are susceptible to relaxation losses which are of significant importance in structural design. After being manufactured, prestressing wires are coiled to make their storage and transportation easier. The possible deleterious effects of this operation on the stress relaxation behavior of prestressing steel wires are usually neglected, though it has been noticed by manufacturers and contractors that when relaxation tests are carried out after a long-time storage, on occasions relaxation losses are higher than those measured a short time after manufacturing. The influence of coiling on the relaxation losses is checked by means of experimental work and confirmed with a simple analytical model. The results show that some factors like initial residual stresses, excessively long-time storage or storage at high temperatures, can trigger or accentuate this damage. However, it is also shown that if the requirements of standards are fulfilled (minimum coiling diameters) these effects can be neglected.
date: 2011
date_type: published
official_url: http://www.cpi-worldwide.com/us/node/20659
full_text_status: public
publication: CPI - Concrete Plant International
number: 1
pagerange: 26-31
institution: Caminos
department: Ingenieria_Civil
refereed: TRUE
issn: 1439-7706
rights: by-nc-nd
citation:    Suárez Guerra, Fernando and Gálvez Ruiz, Jaime  (2011).  Stress relaxation losses of prestressing steel wires.   "CPI - Concrete Plant International"  (n. 1);   pp. 26-31.  ISSN 1439-7706.    
document_url: https://oa.upm.es/11457/1/INVE_MEM_2011_105286.pdf