Intermittent availability of renewable energy sources requires an energy storage system, and small-scale compressed air energy storage (CAES) has been brought up as an attractive option to store excess energy as a pressurized air. Here, we explore the idea of using a close-end steel pile as a vessel to store pressurized air. Small-scale CAES pile is expected to experience unusually a large number of cyclic loading during the operation. This paper frameworks the preliminary results from lab- and field-scale finite element simulations: plane-strain and axisymmetric models are adopted to examine mechanical behavior of a steel pile during a loading-unloading cycle by internal air pressure. Computational models include simple constitutive models of pile, soil, and pile-soil interface. Preliminary results reveal the stability condition of CAES pile as well as deformation pattern.
|Number of pages||9|
|Journal||Geotechnical Special Publication|
|Issue number||270 GSP|
|State||Published - 2016|
|Event||2nd Geo-Chicago Conference: Geotechnics for Sustainable Energy, Geo-Chicago 2016 - Chicago, United States|
Duration: Aug 14 2016 → Aug 18 2016