Location

New York, New York

Session Start Date

4-13-2004

Session End Date

4-17-2004

Abstract

Auger Cast In Place (ACIP) Piles have been used increasingly for various types of projects including industrial and commercial buildings, multi-story parking garages, docks and other structures. The performance of auger cast in place piles is dependent on several factors including the soil type, rate of auger extraction and pumping of grout, grout strength, grout pressures and grout ratio. Performance of piles can be judged by pile load tests performed on test piles constructed under similar conditions. This paper presents case studies involving eight pile load tests performed on auger cast piles installed at four different sites in Texas Gulf Coast Area. The stratigraphies at these sites include over-consolidated stiff to very stiff clay and loose to medium dense sandy silt and silty sands. The test piles had diameters ranging from 14-inches to 24-inches and extended to depths ranging from 55 feet to about 95 feet. Test piles were constructed in general accordance with Deep Foundation Institute’s (DFI) specifications for construction of auger cast-in-place piles. Compression load tests were performed to failure and load-movement relationships were developed. The load test results were compared with the load carrying capacity calculated using some available methods and skin frictional resistance was back calculated and examined.

Department(s)

Civil, Architectural and Environmental Engineering

Appears In

International Conference on Case Histories in Geotechnical Engineering

Meeting Name

Fifth Conference

Publisher

University of Missouri--Rolla

Publication Date

4-13-2004

Document Version

Final Version

Rights

© 2004 University of Missouri--Rolla, All rights reserved.

Document Type

Article - Conference proceedings

File Type

text

Language

English

Share

 
COinS
 
Apr 13th, 12:00 AM Apr 17th, 12:00 AM

Skin Friction Resistance of Auger Cast-In-Place Piles in Texas Gulf Coast Soils

New York, New York

Auger Cast In Place (ACIP) Piles have been used increasingly for various types of projects including industrial and commercial buildings, multi-story parking garages, docks and other structures. The performance of auger cast in place piles is dependent on several factors including the soil type, rate of auger extraction and pumping of grout, grout strength, grout pressures and grout ratio. Performance of piles can be judged by pile load tests performed on test piles constructed under similar conditions. This paper presents case studies involving eight pile load tests performed on auger cast piles installed at four different sites in Texas Gulf Coast Area. The stratigraphies at these sites include over-consolidated stiff to very stiff clay and loose to medium dense sandy silt and silty sands. The test piles had diameters ranging from 14-inches to 24-inches and extended to depths ranging from 55 feet to about 95 feet. Test piles were constructed in general accordance with Deep Foundation Institute’s (DFI) specifications for construction of auger cast-in-place piles. Compression load tests were performed to failure and load-movement relationships were developed. The load test results were compared with the load carrying capacity calculated using some available methods and skin frictional resistance was back calculated and examined.