NEES @ UC San Diego

Video Footage, Retaining Wall Shake Table Test


Retaining Wall Shake Table Test and Design Using Tire Derived Aggregates as Backfill

In the United States, about 200-300 million tires are scrapped annually. Many of them had been stockpiled in landfills, which caused serious public health problems as well as environmental issues. These days, most developed countries prohibit legal and illegal stockpiling of scrap tires and promote recycling and recovering materials. Tire Derived Aggregate (TDA) is an engineered product made by cutting scrap tires into 5 to 450mm pieces to be used in civil engineering applications as lightweight aggregates. Unfortunately, seismic issues related with TDA backfill have not been addressed thoroughly since the development of TDA in the 1990's. The distinct mechanical properties of TDA from conventional backfill materials, particularly lightweight and compressibility, must be factors that influence seismic behavior of retaining walls.

The present research aims at establishing a reliable foundation for seismic design and assessment of TDA backfilled retaining walls through numerical and experimental investigations...

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Retaining Wall Shake Table Test Videos

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The Large High-Performance Outdoor Shake Table is supported in part by the George E. Brown, Jr. Network for Engineering Simulation (NEES) program of the National Science Foundation under Award Number CMMI-0927178.

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