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Fatigue Performance of High-Strength Reinforcing Steel

Soltani, Amir / Harries, Kent A. / Shahrooz, Bahram M. / Russell, Henry G. / Miller, Richard A.

Abstract

An evaluation of concrete reinforcing bar fatigue provisions of AASHTO LRFD Bridge Design Specifications as they pertain to the use of high-strength reinforcing steel is presented. Two large-scale proof tests and a review of available published data demonstrate that presently accepted values for the fatigue or endurance limit for reinforcing steel are applicable, and likely conservative, when applied to higher-strength bars. A minor revision to the AASHTO specification is proposed to eliminate the fatigue penalty resulting from the use of higher-strength reinforcing steel. Finally, it is shown that fatigue considerations will rarely affect the design of typical reinforced-concrete members having a specified yield strength, $f_{y} \leq 690 MPa$ .

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Fatigue Performance of High-Strength Reinforcing Steel

Soltani, Amir / Harries, Kent A. / Shahrooz, Bahram M. / Russell, Henry G. / Miller, Richard A.

Abstract

An evaluation of concrete reinforcing bar fatigue provisions of AASHTO LRFD Bridge Design Specifications as they pertain to the use of high-strength reinforcing steel is presented. Two large-scale proof tests and a review of available published data demonstrate that presently accepted values for the fatigue or endurance limit for reinforcing steel are applicable, and likely conservative, when applied to higher-strength bars. A minor revision to the AASHTO specification is proposed to eliminate the fatigue penalty resulting from the use of higher-strength reinforcing steel. Finally, it is shown that fatigue considerations will rarely affect the design of typical reinforced-concrete members having a specified yield strength, $f_{y} \leq 690 MPa$ .

Fatigue Performance of High-Strength Reinforcing Steel

Soltani, Amir / Harries, Kent A. / Shahrooz, Bahram M. / Russell, Henry G. / Miller, Richard A.

Abstract

An evaluation of concrete reinforcing bar fatigue provisions of AASHTO LRFD Bridge Design Specifications as they pertain to the use of high-strength reinforcing steel is presented. Two large-scale proof tests and a review of available published data demonstrate that presently accepted values for the fatigue or endurance limit for reinforcing steel are applicable, and likely conservative, when applied to higher-strength bars. A minor revision to the AASHTO specification is proposed to eliminate the fatigue penalty resulting from the use of higher-strength reinforcing steel. Finally, it is shown that fatigue considerations will rarely affect the design of typical reinforced-concrete members having a specified yield strength, $f_{y} \leq 690 MPa$ .

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Title:

Fatigue Performance of High-Strength Reinforcing Steel

Contributors:

Soltani, Amir (author) / Harries, Kent A. (author) / Shahrooz, Bahram M. (author) / Russell, Henry G. (author) / Miller, Richard A. (author)

Published in:

Journal of Bridge Engineering ; 17 ; 454-461

Publication date:

2011-06-25

Size:

82012-01-01 pages

ISSN:

1084-0702 , 1943-5592

DOI:

https://doi.org/10.1061/(ASCE)BE.1943-5592.0000281

Type of media:

Article (Journal)

Type of material:

Electronic Resource

Language:

English

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