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Research on the Distributive Relationship between Bond Force and Bearing Pressure for Anchorage Force by Headed Bars.
- Source :
- Buildings (2075-5309); Oct2023, Vol. 13 Issue 10, p2463, 18p
- Publication Year :
- 2023
-
Abstract
- Anchorage force comprises bond force and bearing pressure when headed bars are used. Pull-out tests were conducted on 120 concrete specimens to derive a method for calculating the bond force for reinforcement in straight anchor sections at the yield moment. The parameters include the diameter d, embedded length l<subscript>ae</subscript>, and yield strength f<subscript>y</subscript> of the reinforcement, as well as the strength grade of the concrete f<subscript>cg</subscript>. The experimental results indicated that the specimens underwent three failure modes depending primarily on the embedded length l<subscript>ae</subscript>. The nominal average bond stress τ<superscript>u</superscript> concept was proposed and the difference between τ<superscript>u</superscript> and the actual average bond stress τ caused by the headed bars was observed. To reduce the difference between the τ<superscript>u</superscript> and τ values, the correction coefficient γ was proposed. Analysis indicated that γ increased with an increase in the l<subscript>ae</subscript>/d (on average, 146% higher than the initial value) and decreased with an increase in the f<subscript>y</subscript>/f<subscript>t</subscript> (on average, 33% less than the initial value). A formula was developed to calculate γ, and the bond force in the straight anchor sections at the yield moment for the reinforcement was determined. Thus, a distributive relationship was established for the anchorage force, the bond force, and the bearing pressure. [ABSTRACT FROM AUTHOR]
- Subjects :
- ANCHORAGE
FAILURE mode & effects analysis
BONDS (Finance)
Subjects
Details
- Language :
- English
- ISSN :
- 20755309
- Volume :
- 13
- Issue :
- 10
- Database :
- Complementary Index
- Journal :
- Buildings (2075-5309)
- Publication Type :
- Academic Journal
- Accession number :
- 173268276
- Full Text :
- https://doi.org/10.3390/buildings13102463