Design and Testing of Prestressed Square Concrete Piles: A Case History
by Raymond Mankbadi, (Director of Geotechnical Engineering, Hardesty & Hanover, LLP., 850 Bear Tavern Road, suite 206, West Trenton, NJ 08628), Kuang-yu Yang, (Supervisor Engineer, Geotechnical Unit, New Jersey Department of Transportation, 1035 Parkway Avenue, Trenton, NJ 08625), and Aravinda Ramakrishna, (Geotechnical Engineer, Hardesty & Hanover, LLP., 850 Bear Tavern Road, suite 206, West Trenton, NJ 08628)
pp. 33-41, (doi: http://dx.doi.org/10.1061/40971(310)4)
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| Document type: |
Conference Proceeding Paper |
| Part of: |
GeoCongress 2008: Geosustainability and Geohazard Mitigation |
| Abstract: |
The Route 52 Causeway reconstruction project in Ocean City, New Jersey involves the replacement of existing bridges supported on combination of timber and pre-cast reinforced concrete piles. A case history involving the geotechnical design and construction of the pier foundations for the low-level portions of the proposed replacement structure for proposed Route 52 causeway project is presented. Pier foundations for the low-level portions of the proposed replacement structure are supported on 762-mm (30-in) square prestressed concrete piles. The design concepts of the piles are outlined. Static load test results performed on two square concrete piles, one at the land pier and the other at the water pier are presented. The adequacy of the design method adopted for the estimation of the axial capacity during the design phase is evaluated based on the results of the static load test, as well as the Pile Driving Analyzer (PDA) and Case Pile Wave Analysis Program (CAPWAP) data. The paper also discusses the installation procedures and load-testing programs for the square concrete piles. Finally, recommendations regarding design, construction and dynamic testing of relatively large-diameter piles are presented based on the results of the static load test, as well as the PDA and CAPWAP data. |
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