FATIGUE AND STRESS ANALYSIS CONCEPTS FOR MODIFYING THE RIGID PAVEMENT DESIGN SYSTEM

TRAFFIC ASSOCIATED FATIGUE OF CONCRETE IS A SIGNIFICANT INFLUENCE ON THE DISTRESS OF THE RIGID PAVEMENT SYSTEM. THIS STUDY REPORTS THE FATIGUE PROPERTY OF CONCRETE AS WELL AS A STRESS ANALYSIS OF REINFORCED AND NONREINFORCED SECTIONS AT THE AASHO ROAD TEST. THE CONCRETE FATIGUE EQUATION WAS DEVELOPED FOR THE PREDICTION OF THE ALLOWABLE NUMBER OF APPLICATIONS ON CONCRETE AT ANY APPLIED STRESS. PAVEMENT SLABS WERE TAKEN INTO CONSIDERATION FOR BOTH PAVEMENT TYPES. THE LOAD TRANSFER ANALYSIS SHOWS THE REDUCTIONS IN BENDING AND TWISTING VALUE AT TWO ADJACENT STATIONS. FOR REINFORCED SECIONS, THE REDUCTION IN BENDING STIFFNESS IS 100 PERCENT AT ONE STATION AND THERE IS NO REDUCTION IN TWISTING STIFFNESS. THE INFLUENCE OF LOAD TRANSFER ON THE BEHAVIOR OF RIGID PAVEMENT IS HIGHLY IMPORTANT. THE LOSS OF SUPPORT ANALYSES EXPLAIN THE DIFFERENCES IN DISTRESS AND PERFORMANCE HISTORIES OF THE RIGID PAVEMENT SECTIONS WHICH HAVE THE SAME DESIGN VARIABLES AT THE AASHO ROAD TEST. THE SHAPE OF THE ERODED AREA BENEATH THE TWO ADJACENT SLABS WAS DEVELOPED TO SIMULATE THE PUMPING CONDITION IN THE FIELD. THE MAXIMUM PRINCIPAL STRESS WAS PREDICTED AT ANY PUMPING INDEX AND USUALLY INCREASES AS THE PUMPING INDEX INCREASES.

  • Supplemental Notes:
    • RES STUDY 1-8-69-123 RES REPT NO 123-16 2 APP
  • Corporate Authors:

    Texas Transportation Institute

    Texas A&M University System, 1600 E Lamar Boulevard
    Arlington, TX  USA  76011

    Texas State Department of Highways & Public Transp

    11th and Brazos Streets
    Austin, TX  USA  78701

    University of Texas, Austin

    Center for Highway Research, 200 West 21st Street
    Austin, TX  USA  78712
  • Authors:
    • Yimprasert, P
    • McCullough, B F
  • Publication Date: 1973-1

Media Info

  • Features: Figures; References; Tables;
  • Pagination: 122 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00206117
  • Record Type: Publication
  • Files: TRIS, STATEDOT
  • Created Date: Apr 20 1974 12:00AM