[HTML][HTML] Improvement of the geotechnical axila design methodology for Colorado's drilled shafts socketed in weak rocks
N Abu-Hejleh, MW O'Neill, D Hanneman, WJ Atwooll - 2003 - rosap.ntl.bts.gov
Drilled shaft foundations embedded in weak rock formations (eg, Denver blue claystone and
sandstone) support a significant portion of bridges in Colorado. Since the 1960s, empirical
methods and? rules of thumb? have been used to design drilled shafts in Colorado that
entirely deviate from the AASHTO design methods. The margin of safety and expected shaft
settlement are unknown in these methods, however, both are needed for the implementation
of the new and more accurate AASHTO Load and Resistance Factor Design (LRFD) method …
sandstone) support a significant portion of bridges in Colorado. Since the 1960s, empirical
methods and? rules of thumb? have been used to design drilled shafts in Colorado that
entirely deviate from the AASHTO design methods. The margin of safety and expected shaft
settlement are unknown in these methods, however, both are needed for the implementation
of the new and more accurate AASHTO Load and Resistance Factor Design (LRFD) method …
Improvement of the geotechnical axial design methodology for Colorado's drilled shafts socketed in weak rocks
NM Abu-Hejleh, MW O'Neill… - Transportation …, 2005 - journals.sagepub.com
Drilled shaft foundations embedded in weak rock formations support a large percentage of
bridges in Colorado. Since the 1960s, empirical methods that entirely deviate from the
AASHTO design methods have been used for the axial geotechnical design of these shafts.
The margin of safety and expected shaft settlement are unknown in these empirical
methods. Load tests on drilled shafts provide the most accurate design and research data for
improvement of the design methods. Four Osterberg axial load tests were performed in …
bridges in Colorado. Since the 1960s, empirical methods that entirely deviate from the
AASHTO design methods have been used for the axial geotechnical design of these shafts.
The margin of safety and expected shaft settlement are unknown in these empirical
methods. Load tests on drilled shafts provide the most accurate design and research data for
improvement of the design methods. Four Osterberg axial load tests were performed in …