Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Plastic Hinge Length of FRP-Confined Square RC Columns
The confinement effect of fiber-reinforced polymer (FRP) jacket on the plastic hinge length of square RC columns is studied through experimental testing and analytical study. Seven half-scale RC square columns with different confinement ratios were tested. The strain of longitudinal reinforcement bars and the extent of yielding were measured by strain gauges mounted inside the reinforcement bars. The variation of the strain field of the external column face was recorded continuously by digital image correlation (DIC) during a test. More rational approaches of data analysis are used for identification of plastic hinge length from measured strain fields. The obtained results show that compared with unconfined RC columns, FRP jacketing increases the plastic hinge length when the confinement level is low, but reduces it when the confinement level is high. The analytical study shows that all existing models of plastic hinge length are inadequate in one way or another because no model includes all important factors. The proposed model can correctly capture the trends but it needs to be further improved for accuracy when more data are available.
Plastic Hinge Length of FRP-Confined Square RC Columns
The confinement effect of fiber-reinforced polymer (FRP) jacket on the plastic hinge length of square RC columns is studied through experimental testing and analytical study. Seven half-scale RC square columns with different confinement ratios were tested. The strain of longitudinal reinforcement bars and the extent of yielding were measured by strain gauges mounted inside the reinforcement bars. The variation of the strain field of the external column face was recorded continuously by digital image correlation (DIC) during a test. More rational approaches of data analysis are used for identification of plastic hinge length from measured strain fields. The obtained results show that compared with unconfined RC columns, FRP jacketing increases the plastic hinge length when the confinement level is low, but reduces it when the confinement level is high. The analytical study shows that all existing models of plastic hinge length are inadequate in one way or another because no model includes all important factors. The proposed model can correctly capture the trends but it needs to be further improved for accuracy when more data are available.
Plastic Hinge Length of FRP-Confined Square RC Columns
Jiang, Cheng (Autor:in) / Wu, Yu-Fei (Autor:in) / Wu, Gang (Autor:in)
22.01.2014
Aufsatz (Zeitschrift)
Elektronische Ressource
Unbekannt
Plastic Hinge length of FRP-Confined Square RC Columns
| British Library Online Contents | 2014
Prediction of the plastic hinge length for square CFST stocky columns
| Elsevier | 2022
Displacement and plastic hinge length of FRP-confined circular reinforced concrete columns
| Online Contents | 2015
Modelling plastic hinge of FRP-confined RC columns
| Elsevier | 2016