EVALUATION OF TERMINAL ANCHORAGE INSTALLATIONS ON RIGID PAVEMENTS

THE PROBLEM OF CYCLIC MOVEMENT WITH CONTINUOUSLY REINFORCED CONCRETE PAVEMENT IS EXPLORED. THE GROWTH AND PUSHING OUTWARD EFFECT, RESULTING FROM ENVIRONMENTAL CHANGES, CAUSES RUPTURES OF ABUTMENT WALLS AND IS RESPONSIBLE FOR OTHER UNDESIRABLE PRESSURE. IT WAS HYPOTHESIZED THAT THE SAME TYPE OF ANCHORAGE SYSTEM USED ON JOINTED PAVEMENTS COULD BE USED ON CONTINUOUS PAVEMENTS, THUS SOLVING THE EXPANSION PROBLEM. ANCHORAGES WERE INSTALLED ON CONTINUOUS PAVEMENTS IN MUCH THE SAME MANNER AS THEY HAD PREVIOUSLY BEEN INSTALLED ON JOINTED PAVEMENTS. THE ANCHOR LUGS WERE PLACED IN THE GROUND TRANSVERSELY ACROSS THE PAVEMENT AND WERE ATTACHED TO AN ANCHOR SLAB. LONGTERM OBSERVATIONS AND MEASUREMENTS WERE PERFORMED ON 186 EXISTING TERMINAL ANCHORAGE SYSTEMS ON CONTINUOUS CONCRETE PAVEMENTS. AFTER SEVERAL YEARS OF OBSERVATION, IT WAS FOUND THAT NO ADVERSE MOVEMENT OR PAVEMENT GROWTH TOOK PLACE. THE TERMINAL MOVEMENT WAS FOUND TO BE DIRECTLY RELATED TO PAVEMENT LENGTH OF UP TO 1,000 FT AND TEMPERATURE CHANGE AND INDIRECTLY RELATED TO PAVEMENT GRADE, SUBBASE COEFFICIENT, AND NUMBER OF LUGS. AN EMPIRICAL EQUATION EXPRESSING MOVEMENT TERMS OF THESE VARIABLES IS DERIVED IN THIS STUDY. THE EQUATION, CONSIDERING THE BOUNDEARY CONDITIONS, COULD BE USED AS A DESIGN EQUATION. /AUTHOR/

Media Info

  • Media Type: Print
  • Features: Figures; References; Tables;
  • Pagination: pp 21-29
  • Monograph Title: Pavement systems
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00207390
  • Record Type: Publication
  • Files: TRIS, TRB
  • Created Date: Mar 7 1972 12:00AM