The use of physical phenomena to predict time effects in cracked reinforced concrete beams

M. A. Rahman, Toshiki Ayano, K. Sakata

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

A method of calculating the time effects on cracked reinforced concrete (RC) members, based on actual physical phenomena, is presented. The redistribution of stress due to the migration of the neutral axis, and the consequent elastic and creep recovery are included in the calculation using the method of time-discretization. A simplified multiplier derived from the initial/time-dependent curvature, which is a function of the long-term strain factor, is used to calculate the time-dependent deflection. The concrete non-linear creep model established on axially loaded specimens is modified by introducing a parameter to account for the steel restraining effect on the creep deformation of RC flexural member. The modified model also considers the effect of the compression of the steel on the creep of the RC member. The calculated values are compared with laboratory measured values for several test beams of different cross-sectional properties reported in the literature. The proposed method gives results that are in good agreement with experimental results.

Original languageEnglish
Pages (from-to)219-227
Number of pages9
JournalMagazine of Concrete Research
Volume50
Issue number3
Publication statusPublished - Sep 1998

Fingerprint

Reinforced concrete
Creep
Steel
Concretes
Recovery

ASJC Scopus subject areas

  • Building and Construction
  • Materials Science(all)

Cite this

The use of physical phenomena to predict time effects in cracked reinforced concrete beams. / Rahman, M. A.; Ayano, Toshiki; Sakata, K.

In: Magazine of Concrete Research, Vol. 50, No. 3, 09.1998, p. 219-227.

Research output: Contribution to journalArticle

@article{5022678589fb4a228526b21b71c5b207,
title = "The use of physical phenomena to predict time effects in cracked reinforced concrete beams",
abstract = "A method of calculating the time effects on cracked reinforced concrete (RC) members, based on actual physical phenomena, is presented. The redistribution of stress due to the migration of the neutral axis, and the consequent elastic and creep recovery are included in the calculation using the method of time-discretization. A simplified multiplier derived from the initial/time-dependent curvature, which is a function of the long-term strain factor, is used to calculate the time-dependent deflection. The concrete non-linear creep model established on axially loaded specimens is modified by introducing a parameter to account for the steel restraining effect on the creep deformation of RC flexural member. The modified model also considers the effect of the compression of the steel on the creep of the RC member. The calculated values are compared with laboratory measured values for several test beams of different cross-sectional properties reported in the literature. The proposed method gives results that are in good agreement with experimental results.",
author = "Rahman, {M. A.} and Toshiki Ayano and K. Sakata",
year = "1998",
month = "9",
language = "English",
volume = "50",
pages = "219--227",
journal = "Magazine of Concrete Research",
issn = "0024-9831",
publisher = "ICE Publishing Ltd.",
number = "3",

}

TY - JOUR

T1 - The use of physical phenomena to predict time effects in cracked reinforced concrete beams

AU - Rahman, M. A.

AU - Ayano, Toshiki

AU - Sakata, K.

PY - 1998/9

Y1 - 1998/9

N2 - A method of calculating the time effects on cracked reinforced concrete (RC) members, based on actual physical phenomena, is presented. The redistribution of stress due to the migration of the neutral axis, and the consequent elastic and creep recovery are included in the calculation using the method of time-discretization. A simplified multiplier derived from the initial/time-dependent curvature, which is a function of the long-term strain factor, is used to calculate the time-dependent deflection. The concrete non-linear creep model established on axially loaded specimens is modified by introducing a parameter to account for the steel restraining effect on the creep deformation of RC flexural member. The modified model also considers the effect of the compression of the steel on the creep of the RC member. The calculated values are compared with laboratory measured values for several test beams of different cross-sectional properties reported in the literature. The proposed method gives results that are in good agreement with experimental results.

AB - A method of calculating the time effects on cracked reinforced concrete (RC) members, based on actual physical phenomena, is presented. The redistribution of stress due to the migration of the neutral axis, and the consequent elastic and creep recovery are included in the calculation using the method of time-discretization. A simplified multiplier derived from the initial/time-dependent curvature, which is a function of the long-term strain factor, is used to calculate the time-dependent deflection. The concrete non-linear creep model established on axially loaded specimens is modified by introducing a parameter to account for the steel restraining effect on the creep deformation of RC flexural member. The modified model also considers the effect of the compression of the steel on the creep of the RC member. The calculated values are compared with laboratory measured values for several test beams of different cross-sectional properties reported in the literature. The proposed method gives results that are in good agreement with experimental results.

UR - http://www.scopus.com/inward/record.url?scp=0032155780&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0032155780&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0032155780

VL - 50

SP - 219

EP - 227

JO - Magazine of Concrete Research

JF - Magazine of Concrete Research

SN - 0024-9831

IS - 3

ER -