[1]宗宸锋,邵 东,黄胤培,等.考虑径向温度效应的能源桩荷载传递分析方法研究[J].防灾减灾工程学报,2019,39(04):658-664.[doi:10.13409/j.cnki.jdpme.2019.04.017]
 ZONG Chenfeng,SHAO Dong,HUANG Yinpei,et al.Research on Energy Pile Load Transfer Analysis Method Considering Radial Temperature Effect[J].Journal of Disaster Prevention and Mitigation Engineering,2019,39(04):658-664.[doi:10.13409/j.cnki.jdpme.2019.04.017]
点击复制

考虑径向温度效应的能源桩荷载传递分析方法研究()
分享到:

防灾减灾工程学报[ISSN:1672-2132/CN:32-1695/P]

卷:
39卷
期数:
2019年04期
页码:
658-664
栏目:
论文
出版日期:
2019-08-31

文章信息/Info

Title:
Research on Energy Pile Load Transfer Analysis Method Considering Radial Temperature Effect
文章编号:
1672-2132(2019)04-0658-07
作者:
宗宸锋 邵 东 黄胤培 吴 倩 蒋 刚 宋 著
(南京工业大学交通运输工程学院, 江苏 南京 210009)
Author(s):
ZONG Chenfeng SHAO Dong HUANG Yinpei WU Qian JIANG Gang SONG Zhu
(College of Transportation Science &Engineering, Nanjing Tech University, Nanjing 210009, China)
关键词:
能源桩 径向温度效应 荷载传递法 热效应中性面
Keywords:
energy pile radial temperature effect load transfer method the null point of pile which no thermal expansion or contraction
分类号:
TU473
DOI:
10.13409/j.cnki.jdpme.2019.04.017
文献标志码:
A
摘要:
针对能源桩受温度作用影响时的承载特性难以量化,提出考虑径向温度效应的荷载传递法对能源桩热-力耦合作用下的受力特性进行研究,评估温度变化对能源桩的影响,研究桩身轴力、桩侧摩阻力的分布状态,并以昆山能源桩的现场测试为依托,验证了本文方法的可行性。计算结果表明,温度作用对能源桩桩身应力应变状态有显著影响,当桩体受极限荷载与温度作用时,侧阻力发挥的作用几乎不大,在降温作用下能源桩桩顶会产生残余变形,因此在能源桩设计时应以降温作用时的沉降值为标准进行折减,考虑能源桩的设计承载力。
Abstract:
It is difficult to quantify the bearing characteristics of energy piles under the influence of temperature. The load transfer method considering the radial effect is proposed to study the force characteristics under the thermal-force coupling of energy piles.Temperature effect along the radial direction can be considered in the method. We can use this method to evaluate the influence of temperature changes on energy piles, and to study the distribution of the axial force and the lateral friction resistance of piles. Based on the field test on Kunshan energy pile, the feasibility of the method is verified. The calculation results show that the temperature has a significant effect on the stress-strain state of the energy pile. When the pile is subjected to the ultimate load and temperature load, the lateral resistance plays a little role. Under the cooling effect, residual deformation will occur at the top of the energy pile. Therefore, the settlement value should be reduced in the design of the energy pile according to the standard in low temperature condition, and the design bearing capacity of the energy pile should be considered.

参考文献/References:

[1] 王宇航,陈友明,伍佳鸿,等.地源热泵的研究与应用[J].建筑热能通风空调,2004, 23(4): 30-35. Wang Y H, Chen Y M, Wu J H, et al. Review on the research and application of ground source heat pumps[J].Building Energy & Environment,2004,23(4):30-35.(in Chinese)
[2] 刘汉龙, 孔纲强, 吴宏伟.能量桩工程应用研究进展及PCC能量桩技术开发[J].岩土工程学报,2014,36(1):176-181. Liu H L, Kong G Q, Ng C W W. Applications of energy piles and technical development of PCC energy piles[J]. Chinese Journal of Geotechnical Engineering,2014,36(1):176-181.(in Chinese)
[3] 桂树强, 程晓辉.能源桩换热过程中结构响应原位试验研究[J].岩土工程学报, 2014,36(6):1 087-1 094. Gui Sh Q, Cheng X H. In-situ tests on structural responses of energy piles during heat exchanging process[J]. Chinese Journal of Geotechnical Engineering,2014,36(6):1 087-1 094.(in Chinese)
[4] 路宏伟, 蒋 刚, 王 昊, 等.摩擦型能源桩荷载-温度现场联合测试与承载性状分析[J]. 岩土工程学报, 2017,39(2):334-342. Lu H W, Jiang G, Wang H, et al. In-situ tests and thermo-mechanical bearing characteristics of friction geothermal energy piles[J]. Chinese Journal of Geotechnical Engineering, 2017, 39(2): 334-342.(in Chinese)
[5] Bourne-Webb P J, Amatya B, Soga K, et al. Energy pile test at Lambeth College, London: geotechnical and thermo-dynamic aspects of pile response to heat cycles[J]. Géotechnique, 2009, 59(3):237-248.
[6] Brandl H. Energy foundations and other thermo-active ground structures[J].Géotechnique, 2006, 56(2):81-122.
[7] Laloui L, Nuth M, Vulliet L. Experimental and numerical investigations of the behaviour of a heat exchanger pile[J]. International Journal for Numerical and Analytical Methods in Geomechanics, 2006, 30(8):763-781.
[8] Knellwolf C, Péron H, Laloui L. Geotechnical analysis of heat exchanger piles[J]. Journal of Geotechnical & Geoenvironmental Engineering, 2011, 137(10):890-902.
[9] Ouyang Y, Soga K, Leung Y F. Numerical back-analysis of energy pile test at Lambeth College, London[J]. Geotechnical Special Publication, 2011,211:440-449.
[10] Suryatriyastuti M E, Mroueh H, Burlon S. Understanding the temperature-induced mechanical behaviour of energy pile foundations[J]. Renewable and Sustainable Energy Reviews, 2012, 16(5): 3 344-3 354.
[11] Gashti E H N, Malaska M, Kujala K. Evaluation of thermo-mechanical behaviour of composite energy piles during heating/cooling operations[J]. Engineering Structures, 2014, 75: 363-373.
[12] Jeong S, Lim H, Lee J K, et al. Thermally induced mechanical response of energy piles in axially loaded pile groups[J]. Applied Thermal Engineering, 2014, 71(1): 608-615.
[13] Seed H B, Reese L C. The action of soft clay along friction piles[J].Transportation Engineering, ASCE, 1957, 80(1):731-754.
[14] Kraft L M, Ray R P, Kagawa T. Theoretical t-z curves [J]. Journal of the Geoteehnical Engineering Division, ASCE,1981,107(11):1 543-1 561.
[15] Coyle H M, Reese L C. Load transfer for axially loaded piles in clay[J]. Journal of the Soil Mechanics & Foundations Division, 1966, 92:1-26.
[16] Armaleh S,Desai C S.Load-deformation response of axially loaded piles[J]. Journal of Geotechnical Engineering,1987, 113(12): 1 483-1 500.
[17] 佐腾悟.基桩承载力机理[J].土工技术,1965, 20(1):1-5. Zuo T W.Bearing capacity mechanism of foundation pile[J]. Geotechnique,1965,20(1):1-5.(in Chinese)
[18] 房卫民, 赵明华, 苏检来. 由沉降量控制桩竖向极限承载力的分析[J].中南公路工程, 1999, 24(2):23-25. Fang W M, Zhao M H, Su J L. Analysis of vertical ultimate bearing capacity of piles controlled by settlement[J].Central South Highway Engineering,1999,24(2):23-25.(in Chinese)
[19] Kezdi A.Bearing capacity of piles and pile groups[C]∥ Proceedings of 4th International Conference on Soil Mechanics & Foundation Engineering.London: [s.n.],1957: 46.
[20] 黄胤培,蒋 刚,陆宏伟,等.基于指数模型的能源桩热-力耦合荷载传递分析方法[J].南京工业大学学报,2019,41(1):96-103. Huang Y P, Jiang G, Lu H W, et al. Thermo-mechanical coupling load transfer method of energy pile based on exponential model[J]. Journal of Nanjing Tech University, 2019,41(1):96-103.(in Chinese)
[21] 郑 权,郑雄伟. 基于荷载传递法的超长单桩侧阻力分析[J].土工基础,2010,24(2):57-60. Zheng Q,Zheng X W. Analysis of lateral resistance for super long pile with load transfer method[J].Soil Engineering and Foundation,2010,24(2): 57-60.(in Chinese)
[22] Plaseied N. Load-transfer analysis of energy foundations[D]. Boulder:University of Colorado, 2012.
[23] 林春金, 张乾青, 梁发云,等.考虑桩-土体系渐进破坏的单桩承载特性研究[J]. 岩土力学, 2014,35(4):1 131-1 140. Lin Ch J, Zhang Q Q, Liang F Y, et al. Analysis of bearing behavior of a single pile considering progressive failure of pile-soil system[J]. Rock and Soil Mechanics,2014,35(4):1 131-1 140.(in Chinese)
[24] 辛公锋.大直径超长桩侧阻软化试验与理论研究[D].杭州: 浙江大学, 2006. Xin G F. Test and theory study on shafat resistance softening of large diameter and super-long piles[D]. Hangzhou: Zhejiang University, 2006.(in Chinese)
[25] Frank R, Zhao S R. Estimation par les paramètres pressiométriques de l' enfoncement sous charge axiale de pieux forés dans des sols fins[J].Bull Liaison Lab Ponts Chauss,1982,119: 173.
[26] Poulos H G. Pile behavior-theory and application[J].Géotechnique,1989,39(3):365-415.

相似文献/References:

[1]桑宏伟,张 丹,刘 春,等.基于离散元法的能源管传热过程模拟[J].防灾减灾工程学报,2019,39(04):645.[doi:10.13409/j.cnki.jdpme.2019.04.015]
 SANG Hongwei,ZHANG Dan,LIU Chun,et al.Numerical Simulation on Heat Transfer of Energy PHC Pile based on Discrete Element Method[J].Journal of Disaster Prevention and Mitigation Engineering,2019,39(04):645.[doi:10.13409/j.cnki.jdpme.2019.04.015]

备注/Memo

备注/Memo:
收稿日期:2019-02-28; 修回日期:2019-04-12 基金项目:江苏省自然科学基金项目(BK20171468)资助 作者简介:宗宸锋(1994-),男,硕士研究生。主要从事桩土界面研究。Email:1146579597 @qq.com
更新日期/Last Update: 2019-09-15