Geo-Congress 2020
Geotechnical Insights from Reliability-Based Design to Improve Partial Factor Design Methods
Publication: Geo-Congress 2020: Engineering, Monitoring, and Management of Geotechnical Infrastructure (GSP 316)
ABSTRACT
This paper presents insights obtained from reliability analysis and reliability-based design (RBD) for three geotechnical engineering examples, namely an underwater slope in San Francisco Bay mud that failed during excavation, a spread footing sustaining both vertical and horizontal loads, and laterally loaded piles in soil modelled with nonlinear and depth-dependent Matlock strain-softening p-y curves. The aim is to show how RBD via the first-order reliability method (FORM) can overcome some limitations of the load and resistance factor design (LRFD) method and the Eurocode 7 (EC7) design method. The differences and similarities between the design point in RBD and those in LRFD and EC7 are discussed. The ability of RBD-via-FORM to provide valuable information at its design point and to automatically reflect parametric uncertainties, correlations, and case-specific sensitivities and to resolve subtle load-resistance duality is demonstrated. It is suggested that RBD-via-FORM can be conducted in tandem with partial factor design methods in order to overcome some limitations which sometimes arise in the latter.
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Information & Authors
Information
Published In
Geo-Congress 2020: Engineering, Monitoring, and Management of Geotechnical Infrastructure (GSP 316)
Pages: 686 - 695
Editors: James P. Hambleton, Ph.D., Northwestern University, Roman Makhnenko, Ph.D., University of Illinois at Urbana-Champaign, and Aaron S. Budge, Ph.D., Minnesota State University, Mankato
ISBN (Online): 978-0-7844-8279-7
Copyright
© 2020 American Society of Civil Engineers.
History
Published online: Feb 21, 2020
ASCE Technical Topics:
- Continuum mechanics
- Design (by type)
- Dynamic loads
- Dynamics (solid mechanics)
- Engineering fundamentals
- Engineering mechanics
- Foundation design
- Foundations
- Geomechanics
- Geotechnical engineering
- Geotechnical investigation
- Horizontal loads
- Lateral loads
- Load and resistance factor design
- Load factors
- Soil analysis
- Soil mechanics
- Soil properties
- Solid mechanics
- Static loads
- Statics (mechanics)
- Structural design
- Structural dynamics
- Vertical loads
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