eprintid: 10231
rev_number: 2
eprint_status: archive
userid: 1
dir: disk0/00/01/02/31
datestamp: 2023-11-09 16:36:51
lastmod: 2023-11-09 16:36:51
status_changed: 2023-11-09 16:30:54
type: article
metadata_visibility: show
creators_name: Nikbakht, E.
creators_name: Rashid, K.
title: Investigation on seismic performance and functionality of self-centring post-tensioned segmental columns
ispublished: pub
keywords: Carbon steel; Cyclic loads; Ductility; Earthquakes; Finite element method; Loads (forces); Numerical methods; Seismology; Unloading, Bridge columns; Design recommendations; Displacement ductility; Loading and unloading; Pre-cast; Residual displacement; segmental; Yield displacement, Aspect ratio
note: cited By 12
abstract: The precast post-tensioned segmental columns react against lateral seismic loading with low residual displacement, predominantly because of the self-centring capability of post-tensioning strands. However, their application is still limited in high seismic zones due to their unknown behaviour during and following severe earthquake loading. In this work, experimental study is conducted to inspect the functionality of post-tensioned segmental columns after suffering severe damages. In earlier work by the authors, partial yield of central strands had been occurred during the unloading stage in the last cycle at 4 drift level. In current study, the experimental work is extended and the specimen retested under loading and unloading up to 4.0 drift. The results indicate that the first segment shows approximately 10 mm horizontal movement on the surface of foundation. However, the specimen showed identical strength at 4.0 drift level. In addition, using finite element method (FEM), a numerical study was conducted in order to investigate the influence of various parameters such as mild steel ratio, concrete strength, number of segments, post-tensioning force and axial loading. Finally, design recommendations were proposed for the yield displacement, ductility and correlation of residual displacement and displacement ductility of post-tensioned segmental columns with various aspect ratios. © 2017 Informa UK Limited, trading as Taylor & Francis Group.
date: 2018
publisher: Taylor and Francis Ltd.
official_url: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85026854081&doi=10.1080%2f15732479.2017.1359632&partnerID=40&md5=0fb8a8840792f76c9c7b5f74edc19292
id_number: 10.1080/15732479.2017.1359632
full_text_status: none
publication: Structure and Infrastructure Engineering
volume: 14
number: 6
pagerange: 730-742
refereed: TRUE
issn: 15732479
citation:   Nikbakht, E. and Rashid, K.  (2018) Investigation on seismic performance and functionality of self-centring post-tensioned segmental columns.  Structure and Infrastructure Engineering, 14 (6).  pp. 730-742.  ISSN 15732479