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Rights & Permissions Free PDF Access Sign in to download PDF book and chapters Free Resources Display this book on your site! Related Titles NCHRP Report 549: Simplified Shear Design of Structural Concrete Members NCHRP Report 678: Design of FRP Systems for Strengthening Concrete Girders in Shear Other Related Titles NCHRP Report 679: Design of Concrete Structures Using High-Strength Steel Reinforcement (2011) National Cooperative Highway Research Program (NCHRP) Citation Manager Export the bibliographic data for this book in your chosen format Web Search Builder Use this book's key terms to search within this book, across our collection, or across the Web. Skim This Chapter Skim this chapter and use this chapter's key terms to search within this book. Reference Finder Paste in your own text to find books that relate to your topic. Citation Manager Russell, Henry G, Miller, Richard A, Harries, Kent A, Shahrooz, Bahram M, Transportation Research Board. "2.4 Fatigue Performance of High-Strength Reinforcing Steel." NCHRP Report 679: Design of Concrete Structures Using High-Strength Steel Reinforcement. Washington, DC: The National Academies Press, 2011. Please select a format: Page 26   E-mail Share on facebook Facebook Share on delicious Delicious Share on stumbleupon Stumble Share on twitter Twitter More Sharing ServicesMore Page 26 Front Matter (R1-R10) Summary (1-4) 1.1 Introduction (5-5) 1.3.1 Mechanical Properties of A1035 Reinforcing Steel (6-6) 1.3.2 Tension Properties of A1035 Reinforcing Steel (7-7) 1.3.3 Flexural Reinforcement (8-8) 1.3.4 Shear Reinforcement (9-9) 1.3.6 Bond and Development (10-10) 1.3.7 Serviceability Considerations (11-12) 1.3.8 Corrosion Performance of Reinforcing Steel Grades (13-13) 1.4 Survey of Use of High-Strength Steel Reinforcement in Bridge Structures (14-14) 1.4.2 Reported Use of A1035 Reinforcing Steel in Highway Bridge Infrastructure (15-15) 2.2.1 ASTM A1035 Reinforcing Steel (16-17) 2.3.1 Flexural Resistance (18-20) 2.3.2 Tension-Controlled and Compression-Controlled Strain Limits for High-Strength ASTM A1035 Reinforcing Bars (21-22) 2.3.4 Experimental Evaluation (23-24) 2.3.5 Summary and Recommendations (25-25) 2.4 Fatigue Performance of High-Strength Reinforcing Steel (26-26) 2.4.2 Effect of High-Strength Steel on the AASHTO Fatigue Provisions (27-27) 2.4.3 Fatigue of Slabs (AASHTO LRFD Section 9) (28-28) 2.4.4 Fatigue Test Specimens (29-29) 2.4.5 Summary of Fatigue Tests and Conclusions (30-31) 2.5.2 Experimental Evaluation (32-36) 2.6 Shear Friction (37-37) 2.6.1 Experimental Program (38-39) 2.6.2 Experimental Results (40-42) 2.7 Compression Members (43-43) 2.7.1 Column Capacity (44-44) 2.7.2 Spacing of Spiral Reinforcement (45-47) 2.8.1 Splice Development (48-49) 2.8.2 Hook Anchorage (50-54) 2.9 Serviceability Considerations (55-55) 2.9.1 Deflections of Flexural Members (56-56) 2.9.2 Crack Widths (57-57) 2.9.3 Summary and Conclusions (58-58) 3.1.3 Proposed Changes to Section 9 of the LRFD Specifications (59-60) 3.2.2 Flexure (61-61) 3.3.1 Application in Seismic Zones 2, 3, and 4 (62-62) 3.3.5 Control of Flexural Cracking and Corrosion (63-63) References (64-67) Notation (68-71) Appendices (72-72) Abbreviations used without definitions in TRB publications (73-73)

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26 (a) Specimens F1, F2, F3 (b) Specimens F4, F5, F6 Figure 11. Load-midspan steel strain. effectively and reliably be used to determine flexural capacity of members with A1035 longitudinal reinforcement. Members reinforced with high-strength ASTM A1035 bars exhibit ade- Table 15. Ratio of peak strain to quate ductility and do not suggest any unexpected response target strain and maximum characteristics. concrete strain. Peak Strain/ Peak Concrete 2.4 Fatigue Performance of Specimen Target Strain Strain F1 2.46 0.0025 High-Strength Reinforcing Steel F2 2.07 0.0027 F3 3.14 0.0034 Fatigue is a process of progressive structural change in a F4 3.68 0.0038 material subjected to transient loads, stresses or strains. Fatigue F5 1.92 0.0039 strength is defined as the maximum transient stress range (S) F6 3.24 0.0033 that may be repeated without causing failure for a specified