Design, Construction, and Performance of an Anchored Tangent Pile Wall for Excavation Support

Excavation for a building in Washington, D.C. required support systems to limit the deformation of several adjacent structures. One adjacent structure would have been difficult to underpin conventionally because column footings are located approximately 13 feet behind the face of the excavation. A geo-support system consisting of tangent piles and two rows of tieback anchors was presented as an alternative to direct underpinning. In order to predict potential ground movements adjacent to the 27-foot deep excavation, tangent piles were analyzed as beam-columns subjected to lateral earth pressures, footing surcharge loads, and anchor loads. Deformations of the adjacent building were monitored during construction for comparison with the predictions. In addition, the drilled shafts of the tangent pile wall were used as a permanent foundation for the new building columns. This paper describes the design, analysis, construction and performance of the anchored tangent pile wall. This case history demonstrates the effectiveness of using this configuration of drilled shafts to limit ground movements in deep excavations close to existing structures.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/isbn/0784407134
• Supplemental Notes:
  • Full conference proceedings available on CD-ROM.
• Corporate Authors:

  American Society of Civil Engineers

  1801 Alexander Bell Drive
  Reston, VA  United States  20191-4400
• Authors:
  • Carpenter, J R
  • Zortman, M R
  • Maher, W F
  • Steele, J A
  • Turner, John P
• Conference:
  • GeoSupport 2004: Innovation and Cooperation in the Geo-Industry
  • Location: Orlando Florida, United States
  • Date: 2004-1-29 to 2004-1-31
• Publication Date: 2004

Language

• English

Media Info

• Media Type: Print
• Features: Figures; Photos; References; Tables;
• Pagination: pp 322-333
• Monograph Title: GeoSupport 2004. Drilled Shafts, Micropiling, Deep Mixing, Remedial Methods, and Specialty Foundation Systems

Subject/Index Terms

• TRT Terms: Case studies; Construction sites; Deformation; Embankments and retaining walls; Foundations; Structures; Support piles; Tiebacks
• Uncontrolled Terms: Drilled shafts; Tangent piles; Underpinning
• Geographic Terms: Washington (District of Columbia)
• Subject Areas: Bridges and other structures; Construction; Geotechnology; Highways; I51: Earthworks and Soil Drainage;

Filing Info

• Accession Number: 01000151
• Record Type: Publication
• ISBN: 0784407134
• Files: TRIS
• Created Date: May 9 2005 9:46AM