Full-Scale Field Testing of Energy Piles

Melis Sutman, C. Guney Olgun, Tracy Brettmann

Research output: Chapter in Book/Report/Conference proceedingConference contribution

20 Citations (Scopus)

Abstract

Energy piles are deep foundation elements designed to utilize near-surface geothermal energy, while at the same time serve as foundations for buildings. The use of energy piles for geothermal heat exchange has been steadily increasing during the last decade, yet there are still pending questions on their behavior during temperature changes. A series of field tests on three different energy piles was carried out in Richmond, TX, with the aim of quantifying the thermal influences on the performance and capacity of energy piles. The field test program included conventional pile load tests and application of temperature cycles with maximum temperature of 45°C (113°F) and minimum of 8°C (47°F) over a total duration of six weeks. The test piles with and without maintained structural loads were exposed to heating-cooling cycles to investigate the effect of thermo-mechanical and thermal loads on the energy piles, respectively. With the use of fiber optic cables, vibrating wire strain gauges, thermistors and thermal integrity profile wires, the temperature and strain profiles were monitored on the test piles throughout the field tests. This paper presents the findings inferred from the recorded data along with the details of the in-situ tests on energy piles.

Original languageEnglish
Title of host publicationIFCEE 2015
EditorsJ. Brian Anderson, Magued Iskander, Muhannad T. Suleiman, Debra F. Laefer
PublisherAmerican Society of Civil Engineers
Pages1638-1647
Number of pages10
ISBN (Electronic)9780784479087
DOIs
Publication statusPublished - 2015
EventInternational Foundations Congress and Equipment Expo 2015 - San Antonio, United States
Duration: 17 Mar 201521 Mar 2015

Publication series

NameGeotechnical Special Publication
Number256

Conference

ConferenceInternational Foundations Congress and Equipment Expo 2015
Abbreviated titleIFCEE 2015
CountryUnited States
CitySan Antonio
Period17/03/1521/03/15

ASJC Scopus subject areas

  • Building and Construction
  • Geotechnical Engineering and Engineering Geology
  • Civil and Structural Engineering
  • Architecture

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