A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Evaluation of LRFD Resistance Factors and Risk for Mechanically Stabilized Earth Walls
The use of Mechanically Stabilized Earth (MSE) walls is very common in congested urban areas. AASHTO's current LRFD resistance values were established from Allowable Stress Design Factors of Safety. Variability of soil friction angle, unit weight, cohesion, etc. is not considered. This study investigates the influence of soil property variability on MSE wall sliding and bearing stability and compares Capacity Demand Ratio (CDR) distributions from conventional analytical approaches with laboratory centrifuge model results. Next, the probability of failures (CDR < 1.0) and associated variability is applied in risk assessment of two MSE walls used in existing transportation infrastructure subsystems. The risk assessment was used to develop recommended probability of failures in design to meet the associated cost of repair if catastrophic failures of the walls are to occur.
Evaluation of LRFD Resistance Factors and Risk for Mechanically Stabilized Earth Walls
The use of Mechanically Stabilized Earth (MSE) walls is very common in congested urban areas. AASHTO's current LRFD resistance values were established from Allowable Stress Design Factors of Safety. Variability of soil friction angle, unit weight, cohesion, etc. is not considered. This study investigates the influence of soil property variability on MSE wall sliding and bearing stability and compares Capacity Demand Ratio (CDR) distributions from conventional analytical approaches with laboratory centrifuge model results. Next, the probability of failures (CDR < 1.0) and associated variability is applied in risk assessment of two MSE walls used in existing transportation infrastructure subsystems. The risk assessment was used to develop recommended probability of failures in design to meet the associated cost of repair if catastrophic failures of the walls are to occur.
Evaluation of LRFD Resistance Factors and Risk for Mechanically Stabilized Earth Walls
Wasman, S. (author) / McVay, M. (author) / Bloomquist, D. (author) / Harrison, M. (author) / Lai, P. (author)
Georisk 2011 ; 2011 ; Atlanta, Georgia, United States
GeoRisk 2011 ; 778-786
2011-06-21
Conference paper
Electronic Resource
English
Evaluation of LRFD Resistance Factors and Risk for Mechanically Stabilized Earth Walls
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