Two, approximately one-half scale, end-diaphragm abutments have been tested to failure. Special attention is focused on the stiffness and strength characteristics of the west abutment system which was designed and constructed to simulate, as accurately as possible, an actual abutment system. The ultimate strength value compared well with the typically used 7.7 ksf (370 kPa) and demonstrated a level of conservatism. The typically used 200 kip/inch/foot (115 kN/mm/m) stiffness term was identified to be significantly high for typical deformations expected. For ultimate longitudinal strength, designers are offered a rational alternative in the form of Equations 5 through 8 in this report. The four equations of this ultimate capacity model arise from a modified Mohr-Coulomb wedge approach based upon the interpretation of the physical test result. For stiffness it is recommended that a calibrated curve like shown in Figure 15 be used as a minimum as it respects the dependence of stiffness on deformation.

  • Supplemental Notes:
    • This report is an Executive Summary of Report UCD-STR-95-1 and deals exclusively with the longitudinal test.
  • Corporate Authors:

    University of California, Davis

    Pavement Research Center, One Shields Avenue
    Davis, CA  United States  95616

    California Department of Transportation

    Division of Structures Design, 1120 N Street
    Sacramento, CA  United States  95814
  • Authors:
    • Romstad, K
    • Kutter, B
    • Maroney, B
    • Vanderbilt, E
    • Griggs, M
    • Chai, Y H
  • Publication Date: 1996-7


  • English

Media Info

  • Features: Figures; References;
  • Pagination: 42 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00727212
  • Record Type: Publication
  • Report/Paper Numbers: UCD-STR-96-1
  • Contract Numbers: 59 Q 183
  • Created Date: Oct 4 1996 12:00AM