Probabilistic Modeling of Subgrade Soil Strengths

摘要

A concept of spatial average in probabilistic modeling of subgrade soil strength is presented. The advantage of the application of spatial average to pavement engineering is explained. The link between the concept and the overall probability-based pavement design procedure is formulated and explained. In the earlier part of the report, a literature review of the concept and procedure of probabilistic design of pavements, which includes the concepts of variations and reliability, is presented. Finally, an outline of a probability based pavement design procedure for the Corps of Engineers is presented. (Author)