냉난방 가동 모사에 따른 콘크리트 에너지파일의 열응력 해석에 대한 연구Study on Thermal Stress Occurred in Concrete Energy Pile During Heating and Cooling Buildings
- Other Titles
- Study on Thermal Stress Occurred in Concrete Energy Pile During Heating and Cooling Buildings
- Authors
- 성치훈; 박상우; 김병연; 정경식; 최항석
- Issue Date
- 2015
- Publisher
- 한국지열에너지학회
- Keywords
- 에너지파일; 열응력; 역학적 거동; 지열 에너지; Energy pile; Thermal stress; Mechanical behavior; Geothermal energy
- Citation
- 한국지열에너지학회논문집, v.11, no.2, pp.12 - 18
- Indexed
- KCI
- Journal Title
- 한국지열에너지학회논문집
- Volume
- 11
- Number
- 2
- Start Page
- 12
- End Page
- 18
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/95265
- DOI
- 10.17664/ksgee.2015.11.2.012
- ISSN
- 1738-6985
- Abstract
- The energy pile, used for both structural foundations and heat exchangers, brings about heat exchange with the ground formation by circulating a working fluid for heating and cooling buildings. As heat exchange occurs in the energy pile, thermal stress and strain is generated in the pile body and surrounding ground formation. In order to investigate the thermo-mechanical behavior of an energy pile, a comprehensive experimental program was conducted, monitoring the thermal stress of a cast-in place energy pile equipped with five pairs of U-type heat exchanger pipes. The heating and cooling simulation both continued for 30 days. The thermal strain in the longitudinal direction of the energy pile was monitored for a 15 operation days and another 15 days monitoring followed, without the application of heat exchange. In addition, a finite element model was developed to simulate the thermomechanical behavior of the energy pile. A non-linear contact model was adopted to interpret the interaction at the pile-soil interface, and thermal-induced structure mechanics was considered to handle the thermo-mechanical coupled multi-field problem.
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Collections - College of Engineering > School of Civil, Environmental and Architectural Engineering > 1. Journal Articles
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