DESIGN AND PERFORMANCE EVALUATION OF THE CEMENT-DOWEL METHOD OF SPLICING PRESTRESSED CONCRETE PILES

In the design of deep foundations, pile lengths necessary to provide adequate capacity may be underestimated. In such a case, an addition or lengthening of the pile is required. If steel piles are being used, welding of additional sections is common practice. However, with prestressed concrete piling, the solution is neither common nor standardized. At present, the Alabama Department of Transportation does not specify a method of splicing prestressed concrete piles. In order to develop an effective working splice, several conditions have to be met. First, the spice has to be fabricated under field conditions with the piles receiving no prefabrication in the prestressing plant. Secondly, the splice should be able to withstand driving stresses, including both tensile and compressive stresses, a short time after fabrication of the splice. And finally, the spliced section, as it will be relied on for structural support, should exhibit equal or greater moment capacity as that of an unspliced pile. To design a splice that meets the aforementioned requirements, a survey of present practice was conducted by the authors. With that information and the findings of a previous research project, a trial splice was designed. Then prestressed concrete piles were constructed. Finally, the spliced moment capacity of the piles were compared to that of an unspliced section. The cement-dowel splice proved to be an effective method for structurally joining prestressed precast concrete pile sections.

• Corporate Authors:

  Auburn University

  Highway Research Center, Harbert Engineering Center
  Auburn, AL  United States  36849-5337
• Authors:
  • Cousins, T E
  • Brown, D A
  • Drake, D F
• Publication Date: 1995-5

Language

• English

Media Info

• Features: Appendices; Figures; References; Tables;
• Pagination: 96 p.

Subject/Index Terms

• TRT Terms: Concrete construction; Design; Engineering moments; Joining; Performance evaluations; Precast concrete; Prestressed concrete; Splicing; Support piles
• Uncontrolled Terms: Moment capacity
• Old TRIS Terms: Cement dowel; Prestressed concrete piles
• Subject Areas: Bridges and other structures; Design; Highways; I24: Design of Bridges and Retaining Walls;

Filing Info

• Accession Number: 00724592
• Record Type: Publication
• Report/Paper Numbers: IR-95-01
• Files: TRIS
• Created Date: Aug 16 1996 12:00AM