The Applied Mechanical Stabilization Design Method for Unpaved Roads
May 31, 2023
1:30 pm EST
Description:
One of the most common challenges in sitework is the efficient construction of unpaved roads, particularly over soft soils. The design of these roads was historically based on imprecise inputs or rules of thumb. In the past 20 – 30 years, improved methods have resulted in better designs and successfully incorporated the benefits of geosynthetics for stabilization.
Now Tensar is proud to introduce a new design methodology delivering significant improvements over currently accepted methods in design precision, the range of site conditions that can be addressed, and the performance contribution of granular materials and geosynthetics. This method is the culmination of a multi-year effort to address the design needs of our customers and comprehensively validate performance to support successful projects.
Presented by Dr. Andrew Lees, the originator of this radical, new method. Learn how it was developed, validated and how it brings even more value to roadway designs.
In this session, we will:
- Identify the limitations and shortcomings of existing methods, how the new method addresses these, and other advantages of the new method
- Discuss the theory behind the method and the testing and validation of the method
- Outline the additional value the method brings to road designs by accurately accounting for different materials in the design and increased precision with design loadings
- Discuss the implementation of the design method into Tensar+ software
- Review project examples of how this method has already saved time and money
Speaker Bio
Dr Andrew Lees joined Tensar in 2016 and is now Global Application Technology Manager for Tensar International with responsibility for advanced design and analysis methods including finite element analysis (FEA). He has developed new design and analysis approaches for crane platforms, railroad foundations, roads, and MSE walls that capture the benefits of mechanical stabilization in a more accurate way, leading to more economical designs.
He graduated in Civil Engineering at the University of Southampton in 1996, where he also obtained a Ph.D. in the fields of centrifuge modeling and FEA of soil-structure interaction in 2000.
He then practiced as a geotechnical engineer at Mouchel International until 2004 when he took up a geotechnical engineering lectureship at Frederick University, Cyprus until 2015. In 2007, he also set up Geofem – a consultancy specializing in geotechnical FEA and satellite data analysis.
He is a member of the NAFEMS Geotechnical Working Group and authored their first guidebook on obtaining parameters for numerical analysis and is a founding member of the Professional Simulation Engineer scheme administered by NAFEMS. He also authored the popular textbook on geotechnical FEA published by the Institution of Civil Engineers in 2016. He was a member of the redrafting panel for Eurocode 7 which will become the first geotechnical design code covering advanced analysis methods. He also presents Tensar’s award-winning vlog Ground Coffee.
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