February 27, 2017

Chunling Li and David Espinoza Paper to Be Published in Geosynthetics International

Chunling Li and David Espinoza (Maryland) co-authored a paper entitled, "Assessment of Reinforced Embankment Stability over Soft Soils Based on Monitoring Results" that will be published in Geosynthetics International in Issue 1 of 2017.

The paper presents a semi-empirical method to assess the stability during construction of a reinforced embankment constructed over soft ground. A finite-element model calibrated using obtained monitoring results was used to evaluate the process of how the reinforcement tensile strength and foundation shear strength are mobilized during the course of construction. Based on the modeling results, the correlations between the degree of mobilization for soil shear strength and monitoring results were proposed. This evaluation provides insights on selection of monitoring parameters for geotechnical monitoring programs and can be used to assist the interpretation of obtained monitoring data for the construction of geosynthetics-reinforced embankment.

Abstract

The stability of a reinforced embankment relies on the contribution of the soil shear strength as well as the reinforcement tensile strength. Typical geotechnical monitoring programs implemented during construction focus on the deformation of foundation soils without quantifying the contribution of the reinforcement. Therefore, the collected information does not provide a direct indication of the stability of the reinforced embankment. This paper presents a semi-empirical method to assess the stability during construction of a reinforced embankment constructed over soft ground. A finite-element model was used to analyze the stability of a 20 m high, 2.4 km long reinforced embankment being constructed over soft dredge/alluvium. The finite-element model was used to evaluate the process of how the reinforcement tensile strength and foundation shear strength are mobilized during the course of construction and to study the potential correlations between the degree of mobilization for soil shear strength and monitoring results. The analyses show that the ratio of maximum lateral displacement (δ) to embankment settlement (S) can be used to assess the degree of shear strength mobilized in the foundation soils.

More Information

For more information regarding the article, visit: Geosynthetics International
For more information on reinforced embankment stability, contact Chunling Li at This email address is being protected from spambots. You need JavaScript enabled to view it., or David Espinoza at This email address is being protected from spambots. You need JavaScript enabled to view it..
To learn more about Chunling see his profile at: https://www.linkedin.com/in/chunling-li-4a940323/
To learn more about David see his profile at: http://www.geosyntec.com/people/david-espinoza

Geosyntec Consultants
Geosyntec is a consulting and engineering firm that works with private and public sector clients to address new ventures and complex problems involving our environment, natural resources, and civil infrastructure.

Follow Us