A new approach for material damping analysis of steel fiber reinforced concrete components under axial cycle loads

Rui Kang, Yi Bao, Weina Meng

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Extensive research has shown that steel fiber reinforced concrete (SFRC) has excellent plastic deformation and dynamic performance. Material damping (MD) is one of the most crucial aspects of structure damping which reflects energy dissipation characteristics of structural system during vibration. This paper presents a new approach to analysis MD of SFRC. Based on the study of the relation between MD and stress amplitude (SA) by Lazan, the area of hysteresis loop of SFRC components under axial cycle loads is calculated with Karsan-Jirsa loading-unloading law by OpenSEES system. The value of energy dissipation is then obtained. It is indicated that energy dissipation per unit of SFRC increases with the increase of maximum SA and decreases with the increase of concrete strength. The relation formula of energy dissipation of SFRC with maximum SA, concrete strength and steel fiber ratio is established by nonlinear regression with SPSS and will be helpful in material character study of SFRC and dynamic response computation of SFRC structures.

Original languageEnglish
Title of host publicationProceedings of the 1st International Workshop on High-Speed and Intercity Railways
Pages251-257
Number of pages7
EditionVOL. 1
DOIs
StatePublished - 2012
Event1st International Workshop on High-Speed and Intercity Railways, IWHIR 2011 - Shenzhen, Hong Kong, China
Duration: 19 Jul 201122 Jul 2011

Publication series

NameLecture Notes in Electrical Engineering
NumberVOL. 1
Volume147 LNEE
ISSN (Print)1876-1100
ISSN (Electronic)1876-1119

Conference

Conference1st International Workshop on High-Speed and Intercity Railways, IWHIR 2011
Country/TerritoryChina
CityShenzhen, Hong Kong
Period19/07/1122/07/11

Keywords

  • MD
  • SFRC
  • analytical solution
  • computation formula
  • hysteresis loop

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