Project 3.12: Lateral loading of unreinforced rigid elements and basal stability of column-supported systems

Lateral Loading of Unreinforced Rigid Elements and Basal Stability of Column-Supported Systems

Project 3.12

Project Summary

The use of rigid column-support to stabilize fill embankments and MSE walls continues to grow in popularity, especially among DOTs and transportation agencies for roadway, railway, and bridge applications because of its distinct advantage in accelerating construction in fill scenarios. However, perimeter columns may be subjected to appreciable lateral loading and excessive tensile stressing in the concrete that may lead to a cessation of the load transfer mechanisms (e.g. arching) and subsequent basal instability. The objectives of this project are to (i) understand the conditions (e.g. fill scenario, subgrade materials, area replacement ratio) that influence lateral loads and bending in exterior columns and (ii) generate design guidance regarding the necessity of reinforcement in perimeter elements subject to lateral loading near the perimeter of slopes, embankments, and MSE walls.

Principal Investigator

Dr. Aaron Gallant


University of Maine

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Office of the Assistant Secretary for Research and Technology, University Transportation Centers Program, Department of Transportation, University of Maine, Deep Foundations Institute.

Implementation of Research Outcomes:

This project is in its initial research phase. Implementation of research outcomes will be reported upon completion of the research outputs.

Impacts and Benefits of Implementation:

This project is in its research phase. Impacts and benefits of the research will be reported after the implementation phase.

Printable Project Information Sheet

December 2019 Quarterly Progress Report

March 2020 Quarterly Progress Report

June 2020 Quarterly Progress Report

September 2020 Quarterly Progress Report

December 2020 Quarterly Progress Report

March 2021 Quarterly Progress Report

June 2021 Quarterly Progress Report

September 2021 Quarterly Progress Report

December 2021 Quarterly Progress Report

March 2022 Quarterly Progress Report

June 2022 Quarterly Progress Report

September 2022 Quarterly Progress Report