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Design and Construction of Driven Pile Foundations:Lessons Learned on the Central Artery/Tunnel ProjectReport No. FHWA-HRT-05-159 View PDF Version (631 KB) ForewordThe purpose of this report is to document the issues related to the design and construction of driven pile foundations at the Central Artery/Tunnel project. Construction issues that are presented include pile heave and the heave of an adjacent building during pile driving. Mitigation measures, including the installation of wick drains and the use of preaugering, proved to be ineffective. The results of 15 dynamic and static load tests are also presented and suggest that the piles have more capacity than what they were designed for. The information presented in this report will be of interest to geotechnical engineers working with driven pile foundation systems. Gary L. Henderson Director, Office of Infrastructure Research and Development NoticeThis document is disseminated under the sponsorship of the U.S. Department of Transportation in the interest of information exchange. The U.S. Government assumes no liability for the use of the information contained in this document. The U.S. Government does not endorse products or manufacturers. Trademarks or manufacturers' names appear in this report only because they are considered essential to the objective of the document. Quality Assurance StatementThe Federal Highway Administration (FHWA) provides high-quality information to serve Government, industry, and the public in a manner that promotes public understanding. Standards and policies are used to ensure and maximize the quality, objectivity, utility, and integrity of its information. FHWA periodically reviews quality issues and adjusts its programs and processes to ensure continuous quality improvement. Technical Report Documentation Page
Form DOT F 1700.7 (8-72) Reproduction of completed page authorized SI* (Modern Metric) Conversion Factors Table Of ContentsROLE OF DRIVEN PILE FOUNDATIONS ON THE CA/T PROJECT CHAPTER 2. Driven PILE DESIGN CRITERIA AND SPECIFICATIONS DESIGN CRITERIA AND SPECIFICATIONS Axial Load and Pile Load Test Criteria CHAPTER 3. CONSTRUCTION EQUIPMENT AND METHODS CHAPTER 4. DYNAMIC AND STATIC PILE LOAD TEST DATA Dynamic Results and Interpretation Comparison of Dynamic and Static Load Test Data CHAPTER 5. COST DATA OF DRIVEN PILES List Of FiguresFigure 1. Locations of selected contracts from the CA/T project. Figure 2. Soil profile at the contract C07D1 site as encountered in Boring EB3-5 Figure 3. Soil profile at the contract C07D2 site as encountered in Boring EB2-149 Figure 4. Soil profile at the contract C08A1 site as encountered in Boring EB6-37 Figure 5. Soil profile at the contract C09A4 site as encountered in Boring IC10-13 Figure 6. Soil profile at the contract C19B1 site as encountered in Boring AN3-101 Figure 7. Typical pile details for a 30-cm-diameter PPC pile Figure 8. Typical pile details for a 41-cm-diameter PPC pile with stinger Figure 9. Single-acting diesel hammer Figure 10. Double-acting diesel hammer Figure 11. Single-acting hydraulic hammer Figure 12. Typical pile driving record Figure 13. Site plan, piling layout for the arrivals tunnel at Logan Airport Figure 15. Settlement data obtained during first phase of pile driving Figure 16. Settlement data obtained during second phase of pile driving Figure 17. Multipoint heave gauge data obtained during second phase of pile driving Figure 18. Pore pressure data obtained during second phase of pile driving Figure 19. Inclinometer data obtained during second phase of pile driving Figure 20. Example of CAPWAP signal matching, test pile 16A1-1 Figure 21. Typical static load test arrangement showing instrumentation Figure 22. Load-displacement curves for pile toe, test pile 16A1-1 Figure 23. CAPWAP capacities at end of initial driving (EOD) and beginning of restrike (BOR) Figure 24. Deflection of pile head during static load testing of pile 12A1-1 Figure 25. Distribution of load in pile 12A1-1 Figure 26. Deflection of pile head during static load testing of pile 14 Figure 27. Distribution of load in pile 14 Figure 28. Deflection of pile head during static load testing of pile IPW Figure 29. Distribution of load in pile IPW List Of TablesTable 1. Summary of selected contracts using driven pile foundations Table 2. Summary of pile types used on the selected CA/T contracts Table 4. Summary of pile driving equipment used on the selected contracts Table 5. Summary of pile spacing from selected contracts Table 6. Maximum building heave observed during pile driving Table 7. Summary of pile and preauger information Table 8. Summary of pile driving information Table 9. Summary of CAPWAP capacity data Table 10. Summary of CAPWAP soil parameters Table 11. Summary of static load test data Table 12. Summary of dynamic and static load test data Table 13. Summary of contractor's bid costs for pile driving. Table 14. Summary of contractor's bid costs for preaugering PDF files can be viewed with the Acrobat® Reader®
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This page last modified on 03/22/07 |