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LRFD Design and Construction of Shallow Foundations for Highway Bridge Structures, National Cooperative Highway Research Program (NCHRP) Report 651.

PB2010110769

Publication Date	2010
Personal Author	Paikowsky, S. G.; Canniff, M. C.; Lesny, A.; Amatya, S.; Muganga, R.; Kisse, A.
Page Count	149
Abstract	NCHRP Project 24-31, LRFD Design Specifications for Shallow Foundations was initiated with the objective to develop recommended changes to Section 10 of the AASHTO LRFD Bridge Design Specifications for the strength limit state design of shallow foundations. The AASHTO specifications are traditionally observed on all federally aided projects and are generally viewed as the national code of U.S. highway practice; hence, they influence the construction of all foundations of highway bridges throughout the United States. This report represents the results of the studies and analyses conducted for NCHRP Project 24-31. The current AASHTO specifications, as well as other existing codes employing reliabilitybased design (RBD) principles, were calibrated using a combination of reliability theory, fitting to allowable stress design (ASD) (also called working stress design (WSD)), and engineering judgment. The main challenges of the project were, therefore, the compilation of large, high-quality databases of tested foundations to failure and the development of a procedural and data management framework that would enable Load and Resistance Factor Design (LRFD) parameter evaluation for the strength limit state of shallow foundations. The presented research is the first to introduce large-scale, RBD calibration of shallow foundations utilizing databases.
Keywords	Bridge foundations Settlement(Structural) Loads(Forces) Highway bridges Displacement Design specifications Tested foundations Failure Stresses
Source Agency	National Academy of Science Transportation Research Board
NTIS Subject Category	50B - Civil Engineering 50C - Construction Equipment, Materials, & Supplies 50A - Highway Engineering
Corporate Authors	Transportation Research Board, Washington, DC. National Cooperative Highway Research Program.; Massachusetts Univ. at Lowell. Geotechnical Engineering Research Lab.; Hanover Univ. (Germany, F.R.). Inst. of Soil Mechanics and Foundation
Supplemental Notes	Prepared in cooperation with Hanover Univ. (Germany, F.R.). Inst. of Soil Mechanics and Foundation Engineering. and Massachusetts Univ. at Lowell. Geotechnical Engineering Research Lab.
Document Type	Technical Report
NTIS Issue Number	201021

LRFD Design and Construction of Shallow Foundations for Highway Bridge Structures, National Cooperative Highway Research Program (NCHRP) Report 651.

LRFD Design and Construction of Shallow Foundations for Highway Bridge Structures, National Cooperative Highway Research Program (NCHRP) Report 651.
PB2010110769

Publication Date	2010
Personal Author	Paikowsky, S. G.; Canniff, M. C.; Lesny, A.; Amatya, S.; Muganga, R.; Kisse, A.
Page Count	149
Abstract	NCHRP Project 24-31, LRFD Design Specifications for Shallow Foundations was initiated with the objective to develop recommended changes to Section 10 of the AASHTO LRFD Bridge Design Specifications for the strength limit state design of shallow foundations. The AASHTO specifications are traditionally observed on all federally aided projects and are generally viewed as the national code of U.S. highway practice; hence, they influence the construction of all foundations of highway bridges throughout the United States. This report represents the results of the studies and analyses conducted for NCHRP Project 24-31. The current AASHTO specifications, as well as other existing codes employing reliabilitybased design (RBD) principles, were calibrated using a combination of reliability theory, fitting to allowable stress design (ASD) (also called working stress design (WSD)), and engineering judgment. The main challenges of the project were, therefore, the compilation of large, high-quality databases of tested foundations to failure and the development of a procedural and data management framework that would enable Load and Resistance Factor Design (LRFD) parameter evaluation for the strength limit state of shallow foundations. The presented research is the first to introduce large-scale, RBD calibration of shallow foundations utilizing databases.
Keywords	Bridge foundations Settlement(Structural) Loads(Forces) Highway bridges Displacement Design specifications Tested foundations Failure Stresses
Source Agency	National Academy of Science Transportation Research Board
NTIS Subject Category	50B - Civil Engineering 50C - Construction Equipment, Materials, & Supplies 50A - Highway Engineering
Corporate Authors	Transportation Research Board, Washington, DC. National Cooperative Highway Research Program.; Massachusetts Univ. at Lowell. Geotechnical Engineering Research Lab.; Hanover Univ. (Germany, F.R.). Inst. of Soil Mechanics and Foundation
Supplemental Notes	Prepared in cooperation with Hanover Univ. (Germany, F.R.). Inst. of Soil Mechanics and Foundation Engineering. and Massachusetts Univ. at Lowell. Geotechnical Engineering Research Lab.
Document Type	Technical Report
NTIS Issue Number	201021