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半埋管能源桩温度传播特性现场试验及Matlab数值模拟 被引量:1

Field Tests and Matlab Numerical Simulation on the Temperature Propagapion Characteristics of Half-buried Energy Piles
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摘要 依托浙江某工程路段,针对一种特殊的半埋管能源桩开展现场试验,通过对桩身及桩周土体温度等进行监测,研究了热水循环作用下能源桩的温度传播特性。发现温度荷载作用下桩体温升沿桩长方向先增大后减小,桩体埋深较深处的换热效率更显著。后通过Matlab模拟出不同桩深处距桩中心不同位置处土体温度值,桩侧临近范围内土体升温显著,因此在实际应用中需要考虑热温度循环对土体热传递特性和力学性质等物性参数的影响。结果表明:热水循环48 h,对距桩中心1 m(2.5D,D为能源桩直径)范围内土体温度有一定影响。延长模拟时间至一年有效工作时间,对土体温度场的影响范围可达2.8 m(7D)。 Based on an engineering section in Zhejiang,field tests on exceptional energy piles with semi-buried pipes were carried out.By monitoring the temperature of the pile and the soil around the pile,the thermodynamic characteristics of the energy pile under hydrothermal circulation were studied.It was found that the temperature rise along the pile increased first and then decreased under temperature load,which indicated that the heat transfer effect of pile was more obvious at the greater depth.Values of soil temperature at different positions from different pile depths to the pile center were simulated by Matlab,and in the vicinity of the pile side,the soil temperature rose significantly.Therefore,the influence of thermal temperature cycle on the physical parameters of soil,such as heat transfer characteristics and mechanical properties,should be considered in practical application.The results show that the soil temperature within 1 m(2.5D,D is the diameter of the energy pile)from the pile center is affected by hydrothermal circulation for 48 hours.When the simulation time is extended to one year,the influence range of soil temperature field can reach 2.8 m(7D).
作者 金格格 陈龙 李长恩 王明 曾昭宇 JIN Gege;CHEN Long;LI Chang’en;WANG Ming;ZENG Zhaoyu(Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering,Hohai University,Nanjing,Jiangsu 210024,China;College of Civil and Transportation Engineering,Hohai University,Nanjing,Jiangsu 210024,China;Guangdong Communication Planning&Design Institute Group Co.,Ltd.,Guangzhou,Guangdong 510507;Shenzhen Transportation Design&Reserch Institute Co.,Ltd.,Shenzhen,Guangdong 518003,China)
出处 《河北工程大学学报(自然科学版)》 CAS 2022年第1期23-29,共7页 Journal of Hebei University of Engineering:Natural Science Edition
基金 国家自然科学基金资助项目(51708175) 中央高校基本科研业务费项目(B210202032)。
关键词 预应力管桩 半埋管 热水循环 温度热响应 温度场 prestressed pipe pile semi-buried pipe hydrothermal circulation temperature propagation temperature pattern
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  • 1陈仁朋,周万欢,曹卫平,陈云敏.改进的桩土界面荷载传递双曲线模型及其在单桩负摩阻力时间效应研究中的应用[J].岩土工程学报,2007,29(6):824-830. 被引量:69
  • 2Bose J E , Smith M D, Spider J D. Advances in ground source heat pump systems-an international overview [ A]. Proceedings of the 7th Heat Pump Conference-IEA[C], Beijing, 2002, 1: 313-324.
  • 3Sanner B, Karytsas C, Mendrinos D, et al. Current status of ground source heat pumps and underground thermal energy storage in Europe [ J ]. Geothemaics, 2003, 3 (2) : 579-588.
  • 4Spider J. Ground-source heat pump system research-past, present, and future[J]. HVAC&R Research, 2005,11 (2): 165-167.
  • 5Morino K, Oka T. Study on heat exchanged in soil by circulating water in a steel pile[J]. Energy and Buildings, 1994, 21(1): 65-78.
  • 6Sanner B, Hellstrom G, Spitler J, et al. Thermal response test-current status and world-wide application [J]. Proceedings World Geothermal Congress, Antalya, Turkey, 2005.
  • 7Georgios Florides, Soteris Kalogrou. First in situ determination of the thermal performance of a U-pipe borehole heat exchanger, in cyprus[J]. Applied Thermal Engineering, 2008, 28(2) : 157-163.
  • 8Roth P, Georgiev A, Busso A, et al. First in situ detennination of ground and borehole thermal properties in latin america[J]. Renewable Energy, 2004, 29(12):1947-1963.
  • 9Launder B E, Spalding D B. The numerical computation of turbulent flows[J]. Comput Methods Appl Mech Eng, 1974, 3 : 269-289.
  • 10张强林,王媛.岩体THM耦合应用研究现状综述[J].河海大学学报(自然科学版),2007,35(5):538-541. 被引量:2

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