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Title:

Development of LRFD design procedures for bridge piles in Iowa : field testing of steel H-piles in clay, sand and mixed soils and data analysis / Kam Weng Ng ... [et al.]

Publisher:

Institute for TransportationIowa State University,

Copyright Date:

2011

Description:

xv, 207 p. : ill. (some col.) ; 28 cm.

Subject:

Load factor design.
Bridges--Design and construction.--Design and construction.
Bridge foundations.
Bridge piers.
Static loads.

Other Authors:

Ng, Kam Weng.
Iowa. Highway Research Board.

Notes:

"September 2011." Includes bibliographic references (p. 102-104). 47

Scope Note:

Final report - volume II

Summary:

In response to the mandate on Load and Resistance Factor Design (LRFD) implementations by the Federal Highway Administration on all new bridge projects initiated after October 1, 2007, the Iowa Highway Research Board sponsored these research projects to develop regional LRFD recommendations. The LRFD development was performed using the Iowa Department of Transportation Pile Load Test database. To increase the data points for LRFD development, develop LRFD recommendations for dynamic methods, and validate the results of LRFD calibration, 10 full-scale field tests on the most commonly used steel H-piles were conducted throughout Iowa. Detailed in situ soil investigations were carried out, push-in pressure cells were installed, and laboratory soil tests were performed. Pile responses during driving, at the end of driving, and at re-strikes were monitored using the Pile Driving Analyzer, following with the CAse Pile Wave Analysis Program analysis. The hammer blow counts were recorded for Wave Equation Analysis Program and dynamic formulas. Static load tests were performed and the pile capacities were determined based on the Davisson's criteria. The extensive experimental research studies generated important data for analytical and computational investigations. The SLT measured load-displacements were compared with the simulated results obtained using a model of the TZPILE program and using the modified borehole shear test method. Two analytical pile setup quantification methods, in terms of soil properties, were developed and validated. A new calibration procedure was developed to incorporate pile setup into LRFD.

OCLC:

(OCoLC)772532649

Locations:

USUX851 -- Iowa State University - Parks Library (Ames)

IAOX771 -- State Library of Iowa (Des Moines)

OVUX522 -- University of Iowa Libraries (Iowa City)