THE BEHAVIOR OF MULTIPLE LAP SPLICES IN WIDE SECTIONS

In most reinforced concrete catilever retaining walls, construction procedures require some type of splicing of the reinforcing steel. Economics often dictate the use of a lap splice. Since a retaining wall has no redundancy, understanding of splice behavior becomes critical to the design of the structure. In order to investigate the behavior of lap splices of the reinforcing steel in such a structure, twenty-five specimens were tested. The specimens were tested with the splice regions subjected to a constant moment along the length of the splice. This loading produced a stress condition as severe as that in the prototype. The main variables in the test program were the splice length and bar diameter, the ratio of the clear cover to the clear spacing of the splices, the edge splice condition, the amount of transverse reinforcement in the splice region, and the casting position. Cracking patterns, steel strain distributions, and failure modes of the specimens were studied to obtain a basic understanding of the behavior of lap splices in wide sections. /FHWA/

  • Supplemental Notes:
    • Sponsored by Texas State Department of Highways and Public Transportation in cooperation with FHWA.
  • Corporate Authors:

    University of Texas, Austin

    Center for Highway Research, 200 West 21st Street
    Austin, TX  United States  78712

    Federal Highway Administration

    Engineering Research and Development Bureau, 1200 New Jersey Avenue, SE
    Washington, DC  United States  20590

    Texas State Department of Highways & Public Transp

    Division of Planning and Research, P.O. Box 5051
    Austin, TX  United States  78763
  • Authors:
    • Thompson, M A
    • Jirsa, James O
    • Breen, J E
    • Meinheit, D F
  • Publication Date: 1975-1

Media Info

  • Features: Appendices; Figures; References; Tables;
  • Pagination: 89 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00130587
  • Record Type: Publication
  • Source Agency: Federal Highway Administration
  • Report/Paper Numbers: FHWA-RD-75-S0421 Intrm Rpt.
  • Contract Numbers: 3-5-72-154
  • Files: NTIS, TRIS, USDOT, STATEDOT
  • Created Date: Mar 29 1976 12:00AM