Thermomechanical properties of an energy micro pile-raft foundation in silty clay
作者机构：College of Civil and Transportation EngineeringHohai UniversityNanjingJiangsu 210098China Key Laboratory of Geological Hazards on Three Gorges Reservoir Area of Ministry of EducationChina Three Gorges UniversityYichangHubei 443002China Shanxi Transportation Research InstituteTaiyuanShanxi 030006China School of Civil EngineeringHenan Polytechnic UniversityJiaozuoHenan 454000China
出 版 物：《Underground Space》 (地下空间（英文）)
年 卷 期：2021年第6卷第1期
页 面：76-84页
核心收录：
学科分类：081401[工学-岩土工程] 08[工学] 0814[工学-土木工程]
基 金：The work presented in this paper was supported by the National Natural Science Foundation of China(Nos.51778212 51922037)
主 题：Energy pile Micro pile-raft foundation Thermomechanical properties Silty clay Field test
摘 要：Micro steel pipe pile was used for existing foundation reinforcement and *** energy micro pile-raft foundation equipped with heat exchange tube was constructed in silty *** diameter and the length of the energy micro pile are 160 mm and 13.0 m,respectively.A series of in situ thermal performance tests were carried out by controlling cycle heating,in which the inlet and outlet water temperatures,flow rate,and thermomechanical properties of the energy micro pile were *** with a numerical simulation method,the thermomechanical stresses and displacement of the raft were also analyzed and *** energy micro pile-raft foundation was also analyzed for different combinations of energy piles and nonenergy piles in the *** show that the micro pile-raft foundation can provide sufficient heat exchange compared with other types of ground heat *** settlement at both the pile top and tip were observed for the groups that contained both energy piles and nonenergy piles.
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