Modeling of Thermomechanical Energy Pile Behavior with Temperature-Induced Radial Effects
文献类型：期刊论文
| 作者 | Zong,Chenfeng3; Jiang,Gang3; Shao,Dong3; Yang,Haofan2; Wang ZY(王梓熠)3; Xiao,Fei1; Wang,Xudong3 |
| 刊名 | INTERNATIONAL JOURNAL OF GEOMECHANICS
 |
| 出版日期 | 2025 |
| 卷号 | 25期号:1页码:14 |
| 关键词 | Energy piles Radial thermal effect Load transfer methods Thermomechanical load |
| ISSN号 | 1532-3641 |
| DOI | 10.1061/IJGNAI.GMENG-9830 |
| 通讯作者 | Jiang, Gang(g.jiang@njtech.edu.cn) |
| 英文摘要 | Geothermal energy foundations or thermoactive ground structures present sustainable alternative systems for meeting heating/cooling needs of buildings in different seasons and are also cost-effective in comparison with stand-alone ground source heat pumps. In simultaneously supporting the upper structure and exchanging heat with the surrounding soil, energy piles may suffer from coupled thermomechanical loads and exhibit complex behaviors in stress and deformation. For predicting energy pile responses to the external loads, numerical models have been established with load transfer method considering the deformation and force in the longitudinal direction of the pile. In heating and cooling, the deformation may not only occur along the length of the pile, but also happen in the radial direction, which may lead to a change of ultimate lateral frictional resistance and load transfer characteristics. Very little work has been undertaken to include the radial effects in the numerical model of energy pile behavior. With the theory of geotechnical medium circular hole expansion, the elastic and elastic-plastic solutions of radial stress of energy piles caused by temperature change are derived in this work and the analytical model under joint action of axial-radial temperature effect are implemented into the numerical model with load transfer method. The results of the study indicate that the operation of energy piles not only affects lateral resistance and axial force in the axial direction but also has an impact on radial aspects due to temperature changes. This influence is primarily manifested when the energy piles are heated, resulting in radial expansion. Such expansion strengthens the soil's constraint on the piles, thereby increasing their bearing capacity. The opposite effect occurs when cooling. The numerical calculation method established in this paper effectively captures these phenomena. |
| 分类号 | 二类 |
| WOS关键词 | MECHANICAL RESPONSE ; PERFORMANCE ; FOUNDATIONS |
| 资助项目 | National Natural Science Foundation of China[52201325] ; Natural Science Foundation of the Jiangsu Higher Education Institutions of China[21KJB560010] ; Foundation of Xuzhou Science and Technology Bureau[KC22309] ; Foundation of Xuzhou Science and Technology Bureau[KC21284] ; State Key Laboratory of Hydraulic Engineering Simulation and Safety of Tianjin University[HESS-2225] ; Water Conservancy Science and Technology Project of Jiangsu Province[2020045] ; Water Resources Department of Jiangsu Province, China ; High-Performance Computing Center of Nanjing Tech University |
| WOS研究方向 | Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001364603200010 |
| 资助机构 | National Natural Science Foundation of China ; Natural Science Foundation of the Jiangsu Higher Education Institutions of China ; Foundation of Xuzhou Science and Technology Bureau ; State Key Laboratory of Hydraulic Engineering Simulation and Safety of Tianjin University ; Water Conservancy Science and Technology Project of Jiangsu Province ; Water Resources Department of Jiangsu Province, China ; High-Performance Computing Center of Nanjing Tech University |
| 其他责任者 | Jiang, Gang |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/97600]  |
| 专题 | 力学研究所_流固耦合系统力学重点实验室(2012-) |
| 作者单位 | 1.Poly Jiangsu Real Estate Co, Suzhou 215000, Peoples R China 2.Chinese Acad Sci, Inst Mech, Key Lab Mech Fluid Solid Coupling Syst, Beijing 100190, Peoples R China; 3.Nanjing Tech Univ, Coll Transportat Sci & Engn, Nanjing 210009, Peoples R China; |
| 推荐引用方式 GB/T 7714 | Zong,Chenfeng,Jiang,Gang,Shao,Dong,et al. Modeling of Thermomechanical Energy Pile Behavior with Temperature-Induced Radial Effects[J]. INTERNATIONAL JOURNAL OF GEOMECHANICS,2025,25(1):14. |
| APA | Zong,Chenfeng.,Jiang,Gang.,Shao,Dong.,Yang,Haofan.,王梓熠.,...&Wang,Xudong.(2025).Modeling of Thermomechanical Energy Pile Behavior with Temperature-Induced Radial Effects.INTERNATIONAL JOURNAL OF GEOMECHANICS,25(1),14. |
| MLA | Zong,Chenfeng,et al."Modeling of Thermomechanical Energy Pile Behavior with Temperature-Induced Radial Effects".INTERNATIONAL JOURNAL OF GEOMECHANICS 25.1(2025):14. |
入库方式： OAI收割
来源：力学研究所
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