Rigid Inclusions and High Strength/Modulus Geosynthetic Reinforced Load Transfer Platform System for Very High Embankments

This paper will provide an introductory explanation regarding the use of rigid inclusions as bearing elements combined with high strength reinforced load transfer platform (LTP). The system resolves issues related to lateral squeeze, excessive deformation, and global failures that can occur due to the low-bearing capacity of the foundation soil. The combination of the columns and LTP (reinforced with high strength, high tensile modulus geosynthetic reinforcement) offers highly improved factors of safety against global stability failures, significantly reduces total and differential settlements, and stabilizes column tops to minimize lateral displacement. The narrative will discuss how the rigid inclusions are designed and built and provide an explanation on how excessive lateral deformation of perimetral columns can be prevented by the system. It will also present information about the different types of high strength geosynthetic reinforcements that can be used. The paper will present case studies illustrating the use of the solution on recent projects and discuss performance results and observations.