Comprehensive Field Load Test and Geotechnical Investigation Program for Development of LRFD Recommendations of Driven Piles on Intermediate Geomaterials

Details

• Creators:
  Ng, Kam W. ; Masud, Nafis Bin ; Oluwatuyi, Opeyemi ; Wulff, Shaun S
• Corporate Creators:
  University of Wyoming. Department of Civil and Architectural Engineering and Construction Management
• Corporate Contributors:
  Wyoming. Department of Transportation. Research Center
• Subject/TRT Terms:
  Construction Design Field Tests Geotechnical Engineering Load And Resistance Factor Design Load Tests Pile Driving Piles (Supports)
• Publication/ Report Number:
  WY-2501F
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States
• Edition:
  Final Report
• Corporate Publisher:
  Wyoming. Department of Transportation
• Abstract:
  Pile foundations were often driven into intermediate geomaterials (IGM) to support heavy civil infrastructures like bridges due to shallow bedrock stratigraphy. Thus, the pile foundations of this region must rely on the resistance contributed from the IGM layers. However, IGM is a transitional geomaterial between soil and rock, that needs to be better defined for the design and construction of driven piles. AASHTO suggests applying the same static analysis (SA) methods developed for piles driven in soil to IGM. However, past studies concluded that SA methods developed for soil resulted in an inconsistent and conservative estimation of geotechnical resistance and considerable variation between the predicted resistances and measured resistances determined from the signal-matching technique using the CAse Pile Wave Analysis Program (CAPWAP). Thus, there is a need to improve the current practice of driven pile design and construction in IGM by establishing representative engineering properties of IGM, by improving SA and construction control methods, and developing more efficient LRFD recommendations. Such recommendations were necessary for reliable and economical design and construction of driven piles. This research aims to improve the efficiency of driven piles in IGM, increasing the system reliability of civil infrastructures, especially bridge structures. The objectives of this proposed research were to classify IGM, determine IGM properties, improve pile resistance estimations in IGM by advanced SA methods, understand the time-dependent pile resistances in IGM, validate the performance of dynamic analysis methods through a static load test program, and recommend changes and improvements to current pile design and construction practices.
• Format:
  PDF
• Funding:
  RS05219
• Collection(s):
  US Transportation Collection
• Main Document Checksum:
  urn:sha-512:bf464834a5a481c0f6d49a60679b778a5c342f10cb01bc668bf9c04a48ea3d743aa83faa5e9be40c9c2e27e1b96e8b6eb70aa21f4dc956d1db3fc2763bf4fd10
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/84984/dot_84984_DS1.pdf
• File Type:
  [PDF - 12.72 MB ]