Dept. of Civil and Environmental Engineering

2362 GG Brown, 2350 Hayward Street

The University of Michigan

Ann Arbor, MI 48109-2125

Tel:734-764-0057

Fax: 734-764-4292

E-mail: addazekk@umich.edu

Michigan Department of Transportation (MDOT): Asset Management of Retaining Walls. PI Adda Athanasopoulos-Zekkos, co-PIs Jerry Lynch and Dimitrios Zekkos. 2016.

The purpose of transportation asset management is to meet life-cycle performance goals (e.g., safety, mobility, preservation, economic impact and environmental stewardship) through the management of physical assets in the most cost-effective manner (FHWA, 2013). Geotechnical asset management can be incorporated into the broader practice of transportation asset management. Currently, many agencies manage geotechnical features on…
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National Science Foundation (NSF): Collaborative Research — Connecting Women Faculty in Geotechnical Engineering: Thriving in a Networked World. PI Adda Athanasopoulos-Zekkos. 2016.

Collaboration often results in greater productivity and innovation than when working alone. Given the increasing complexity of the problems Geotechnical Engineers address and the increasing connectivity in the world, faculty need to be able to manage their professional connections with greater efficiency and effectiveness. The goal for this National Science Foundation (NSF) grant is to…
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Professor Athanasopoulos-Zekkos selected for Excellence in Teaching Award

Associate Professor Adda Athanasopoulos-Zekkos has been selected to receive the 2016 Chi Epsilon Excellence in Teaching Award for the Great Lakes District. This award recognizes dedication to teaching in the civil engineering profession. The Great Lakes District is comprised of universities in Michigan, Ohio and Indiana - including Purdue University, Ohio State University, Michigan State…
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CAREER: Promoting a Fundamental Understanding of Post-Liquefaction Response and Deformations: A Next-Generation Analytical and Experimental Methodology

The research objective of this research project is to develop a unified, scalable approach for soil liquefaction deformation analysis from micro to macro-scale.The overarching research goal is to identify and quantify the physical and environmental parameters that affect the cyclic response of granular soils at the micro- and meso-scale particularly and relate them to the macro-scale (i.e. field) response and deformations.

Feasibility Study of High-Performance Cut-off Walls for Levees in Seismic Regions: Dynamic Wall Analyses and Ductile Slurry Development.

The objective of this program is to develop a novel type of "slurry" cut-off wall for levees that possesses multiple risk mitigation applications,including seepage resistance, high seismic resistance, constructability, and sustainable fabrication. This interdisciplinary project is expected to bring about new approaches that addresses the performance of broad geotechnical infrastructure systems such as levees and embankments, but potentially also other systems such as, piles, below grade pipes and underground infrastructure that have common features of soil/structure/materials interactions and are often subjected to large imposed deformation and water seepage.

Effects of pile-driving induced vibrations on nearby structures and other assets.

This project is focused on better characterizing pile-driving induced vibrations and understanding their attenuation. Emphasis is given on quantifying the effect of soil type, hammer and pile combination and number of cycles on the soil settlement. This is achieved by a combination of field testing measurements and 3D finite element numerical analyses, to develop vibration thresholds in terms of soil peak particle velocity for different soil types. Among the truly unique aspects of the project is that measurements during pile driving are not collected only at the ground surface as has been done in the past, but at different distances and depth from the moving pile tip.

Seismic isolation of earth retaining structures using EPS-Geofoam compressible inclusions.

The objective of this project is to study the effectiveness of an EPS geofoam compressible inclusion as a seismic isolator against seismic lateral pressures. Twocentrifuge testshave been performed on small scale physical models of retaining structures with and without EPS compressible inclusions, generating the first centrifuge data that highlight the seismic isolation capabilities of the material. Finite elemet numerical analyses have also beenperformed that were validated against the experimental data and were subsequently used to model the seismic response of retaining walls.

Development of a GIS-based tool and methodology to evaluate the seismic risk in regions protected against flooding by earthen levee systems.

This project focuses on developing a decision-making methodology that helps users prioritize mitigation efforts and predict levee system performance for selected seismic event scenarios.The proposed methodology will track uncertainties associated with (1) levee geometry, soil stratigraphy and soil properties, (2) the interpolation method, and (3) the calculation of the joint probability of failure due to multiple scenarios. The impact of soil spatial variability on levee response and validation of the developed GIS-based tool is assessed by performing field Vs (shear wave velocity) measurements for assessing the spatial variability of soil materials.