Mechanical Splicer for Precast, Prestressed Concrete Piles

摘要

style="text-align: left;">This article describes an innovative type of mechanical splicer for extending the length of precast, prestressed concrete piles. The splicer was developed, tested, and manufactured in Israel. Recently, it  has been used successfully to obtain 45 m (147 ft) long piles for the foundations of highway and railway bridges constructed at the Ayalon Project in the city of Tel Aviv. Details of the new splicing  method are given, which are used for the fabrication of 500 mm (20 in.) octagonal precast, prestressed concrete piles. Experimental tests have  demonstrated the excellent behavior of the splicer when subjected to tensile tests, and that the tensile failure occurred in the anchoring rods  away from the pile heads. The splicer can be easily modified and applied to splicing square piles of various sizes.>References style="text-align: left;">1. David C., target="_blank" title="a€?Splicing of Precast Prestressed Concrete Piles: Part 1 - Review and Performance of Splices,a€?" href="http://dx.doi.org/10.15554/pcij.09011974.70.97 ">a€?Splicing of Precast Prestressed Concrete Piles: Part 1 - Review and Performance of Splices,a€? PCI JOURNAL, V. 19, No. 5, September- October 1974, pp. 70-97. style="text-align: left;">2. Bruce, Robert N., Jr., and Hebert, David C., target="_blank" title="a€?Splicing of Precast Prestressed Concrete Piles: Part 2 - Tests and Analysis of Cement-Dowel Splices,a€?" href=" http://dx.doi.org/10.15554/pcij.11011974.40.66 ">a€?Splicing of Precast Prestressed Concrete Piles: Part 2 - Tests and Analysis of Cement-Dowel Splices,a€? PCI JOURNAL, V. 19, No. 6, November- December 1974, pp. 40-66. style="text-align: left;">3. Venuti, William J., target="_blank" title="a€?Efficient Splicing Technique for Precast Prestressed Concrete Piles,a€?" href="http://dx.doi.org/10.15554/pcij.09011980.102.124 ">a€?Efficient Splicing Technique for Precast Prestressed Concrete Piles,a€? PCI JOURNAL, V. 25, No. 5, September-October 1980, pp. 102-124. style="text-align: left;">4. Gamble, William L., and Bruce, Robert N., Jr., target="_blank" title="a€?Test of 24 in. Square Prestressed Piles Spliced with ABB Splice Units,a€?" href="http://dx.doi.org/10.15554/pcij.03011990.56.73 ">a€?Test of 24 in. Square Prestressed Piles Spliced with ABB Splice Units,a€? PCI JOURNAL, V. 35, No. 2, March-April 1990, pp. 56-73. style="text-align: left;">5. Cousins, Thomas E., and Brown, Dan A., Testing of Splices of Prestressed Concrete Piles, Proceedings, 13th Structures Congress, America and Beyond, Boston, MA, April 3-5, 1995. style="text-align: left;">6. Israeli Standard SI 4466, a€?Steel for the Reinforcement of Concrete: Ribbed Bars,a€? November 1993, Part 3, Revised November 2000.