ALTERNATIVES FOR PRECAST PILE SPLICES Part 2 · PDF fileDistribution Statement pile splice,...

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  • Report No. BC354 RPWO #80 Part 2 August 2005 FINAL REPORT Part 2

    Contract Title: Alternatives for Precast Pile Splices UF Project No. 4910 4504 960 12 (00026867) Contract No. BC354 RPWO #80

    ALTERNATIVES FOR PRECAST PILE SPLICES

    Part 2

    Principal Investigators: Ronald A. Cook Michael C. McVay Graduate Research Assistant: Isaac Canner

    Project Manager: Marcus H. Ansley

    Department of Civil & Coastal Engineering College of Engineering University of Florida Gainesville, Florida 32611 Engineering and Industrial Experiment Station

  • ii

    Technical Report Documentation Page 1. Report No. 2. Government Accession No. 3. Recipient's Catalog No.

    BC354 RPWO #80 Part 2

    4. Title and Subtitle 5. Report Date

    August 2005 6. Performing Organization Code

    Alternatives for Precast Pile Splices Part 2

    8. Performing Organization Report No. 7. Author(s) R. A. Cook, M. C. McVay and I. Canner

    4910 4504 960 12

    9. Performing Organization Name and Address 10. Work Unit No. (TRAIS)

    11. Contract or Grant No.

    BC354 RPWO #80

    University of Florida Department of Civil Engineering 345 Weil Hall / P.O. Box 116580 Gainesville, FL 32611-6580 13. Type of Report and Period Covered

    12. Sponsoring Agency Name and Address Final Report

    Part 2 14. Sponsoring Agency Code

    Florida Department of Transportation Research Management Center 605 Suwannee Street, MS 30 Tallahassee, FL 32301-8064

    15. Supplementary Notes

    16. Abstract This project involved the design and field testing of a splice for square precast prestressed

    concrete piles containing a cylindrical void. The pile splice incorporates a steel pipe grouted

    into the cylindrical void. Part 2 of the report deals with field testing the splice and contains the

    results of the field testing along with recommended construction and installations guidelines.

    Part 1 contains the design of the pile splice for tension, compression, flexure, and shear.

    17. Key Words 18. Distribution Statement

    pile splice, precast piles, prestressed piles

    No restrictions. This document is available to the public through the National Technical Information Service, Springfield, VA, 22161

    19. Security Classif. (of this report) 20. Security Classif. (of this page) 21. No. of Pages 22. Price

    Unclassified Unclassified 159 orm DOT F 1700.7 (8-72) Reproduction of completed page authorizedF Form DOT F 1700.7 (8-72) Reproduction of completed page authorized

  • iii

    DISCLAIMER

    The opinions, findings, and conclusions expressed in this publication are those of

    the authors and not necessarily those of the Florida Department of Transportation or the

    U.S. Department of Transportation.

    Prepared in cooperation with the State of Florida Department of Transportation

    and the U.S. Department of Transportation.

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    ACKNOWLEDGMENTS

    The field testing for this project would not have been possible without the gracious

    donations of time, equipment and materials from those involved. We express thanks to

    the following individuals and companies for their time and resources.

    Paul Gilbert and Frank Woods of Wood Hopkins Contracting, LLC allowed piles to

    be driven in their equipment yard and provided useful input on the assembly process.

    Mike Elliott of Pile Equipment Inc. was very gracious in the donation of a Delmag

    D46-32 diesel hammer and a set of leads for the two-week long testing period. Pile

    Equipment also provided a hammer operator to assist with the pile driving.

    Don Robertson and Chris Kohlhof of Applied Foundation Testing, Inc. monitored

    both the top and bottom set of accelerometers and strain gages for both pile driving

    events. Applied Foundation Testing also lent the software (CAPWAP) for the analysis

    the pile driving data.

    Brian Bixler of FDOT performed cone penetration tests at the field site to

    determine the depth of the rock layer. He facilitated the FDOTs donation of strain

    transducers and accelerometers that were sacrificed because they went below ground.

    Walt Hanford of Degussa Building Systems was very helpful in the selection of

    grouts for the steel pipe splice.

    John Newton of Dywidag Systems International performed the grout mixing and

    pumping for both pile splices with a consistent grout mix and the correct flow cone time.

    Kathy Grey of District 5, FDOT, also lent a PDA unit for one of the pile drive tests.

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    John Farrell of District 2, FDOT, lent a set of accelerometers, and a PDA unit for

    one of the pile drives, as well as monitored one of the spliced piles during driving, and

    provided valuable insight into the analysis of pile driving data.

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    TABLE OF CONTENTS page

    ACKNOWLEDGMENTS ................................................................................................. iv

    LIST OF TABLES............................................................................................................. ix

    LIST OF FIGURES ........................................................................................................... xi

    ABSTRACT..................................................................................................................... xvi

    CHAPTER

    1 INTRODUCTION ........................................................................................................1

    1.1 Problem Statement.................................................................................................1 1.2 Goals and Objectives .............................................................................................1 1.3 Background............................................................................................................2

    1.3.1 FDOT Structures Laboratory Flexural Tests ...............................................3 1.3.2 Field Testing at St. Johns River Bridge.......................................................4 1.3.3 Previous Steel Pipe Splice Research at the University of Florida...............5

    2 PILE SPLICE TEST SPECIMEN MATERIALS ........................................................7

    2.1 Prestressed Concrete Piles .....................................................................................7 2.2 HSS Steel Pipe with Shear Transfer Mechanism ..................................................9 2.3 Annulus Cementitious Grout ...............................................................................11 2.4 Mating Surface Grout ..........................................................................................14

    3 ANALYSIS OF DRIVING A PRESTRESSED CONCRETE PILE .........................17

    3.1 Pile Driving Test Site Selection...........................................................................17 3.2 Cone Penetration Test from Field Site.................................................................17 3.3 Software Analysis of Pile Driving at the Test Site ..............................................20

    3.3.1 Static Pile Capacity Assessment with PL-AID .........................................20 3.3.2 GRLWEAP Software Analysis .................................................................21 3.3.3 Results of GRLWEAP Software ...............................................................24

    3.4 FDOT Standard Specifications for Road and Bridge Construction.....................25 3.5 Summary of Analyses..........................................................................................27

  • vii

    4 CONSTRUCTION PROCESS AND FIELD TESTING METHOD .........................29

    4.1 Pile Support and Spliced Pile Bracing Method ...................................................29 4.1.1 Steel Template used to brace Spliced Piles ...............................................29 4.1.2 Steel Channels used to brace Spliced Piles ...............................................31

    4.2 Initial Pile Drive to Cutoff Elevation...................................................................32 4.3 Top Half of Piles Cutoff ......................................................................................33 4.4 Assembly of the Steel Pipe Splice .......................................................................35 4.5 Mating Surface Grouted and Annulus Grout Pumped.........................................37 4.6 Driving of Spliced Piles.......................................................................................40

    4.6.1 Spliced Pile #1 Driven after Grout Cured 24 hours ..................................40 4.6.2 Spliced Pile #2 Driven after Grout Cured 20 hours ..................................40 4.6.3 Spliced Pile #1 Re-Driven after 4 days .....................................................41

    4.7 Summary of Splice Construction Process............................................................42

    5 COLLECTION AND ANALYSIS OF PILE DRIVING DATA ...............................45

    5.1 Data Collection with a Pile Driving Analyzer.....................................................45 5.2 PDA Input Information........................................................................................48 5.3 PDA Instrumentation Attachment Locations.......................................................49 5.4 PDA Unit Output .................................................................................................51