基于指数模型的能源桩长期响应研究

doi:10.13722/j.cnki.jrme.2020.0588

Abstract
Figure/Table
References (0)
Related Citation (15)

Download: PDF (24523 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract 基于荷载传递法，提出基于指数模型的能源桩长期响应分析方法。首先，通过引入改进的Masing准则来构建以指数模型为骨干曲线的土体加卸载函数，进而基于荷载传递法研究温度循环过程中能源桩的工作特性；然后通过与现场试验数据进行比较，验证该理论模型的合理性；最后结合算例，研究能源桩的长期工作特性。结果表明：(1) 温度循环方式对桩顶附加沉降有重要影响，相较于仅用于制冷模式的能源桩，冷热循环工况下的桩顶沉降更加明显；(2) 桩顶刚度系数越大，桩顶沉降越小，稳定的也越快；(3) 上部结构荷载较少时，随着温度循环的进行，桩身下部可能会产生拉应力；而上部荷载较大时，桩顶沉降随着桩身温度循环的增长而加快，并且沉降稳定时间逐步增长。

Key words：桩基础能源桩荷载传递法指数模型循环加卸载长期响应

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	DONG Longlong1
	WU Wenbing1
	2
	LIANG Rongzhu1
	2
	LIU Hao1
	2
	MEI Guoxiong1
	2
	YANG Zijian1

Cite this article:

DONG Longlong1,WU Wenbing1,2, et al. Long-term responses of energy piles based on exponential model[J]. , 2021, 40(3): 629-639.

URL:

http://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2020.0588 OR http://rockmech.whrsm.ac.cn/EN/Y2021/V40/I3/629

[13]	费康，戴迪，洪伟.能量桩单桩工作特性简化分析方法[J].岩土力学，2019，40(1)：70-80.(FEI Kang，DAI Di，HONG Wei. A simplified method for working performance analysis of single energy piles[J]. Rock and Soil Mechanics，2019，40(1)：70-80.(in Chinese))
[7]	LORIA A F R，GUNAWAN A，SHI C，et al. Numerical modelling of energy piles in saturated sand subjected to thermo-mechanical loads[J]. Geomechanics for Energy and the Environment，2015，1(1)：1-15.
[17]	李作勤. 摩擦桩的荷载传递及承载力的一些问题[J]. 岩土力学，1990，11(4)：3-14.(LI Zuoqin. Some problems of load transfer and bearing capacity of friction piles[J]. Rock and Soil Mechanics，1990，11(4)：3-14.(in Chinese))
[2]	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.
[4]	WANG B，BOUAZZA A，HABERFIELD C. Preliminary observations from laboratory scale model geothermal pile subjected to thermal- mechanical loading[C]// Proceedings of the Geo-frontiers Congress. [S. l.]：Geotechnical Special Publication，2011：430-439.
[12]	CHEN D. Soil structure interaction in energy piles[M. S. Thesis][D]. San Diego：University of California，2016.
[22]	MIMOUNI T. Thermomechanical characterization of energy geostructures with emphasis on energy piles[R]. Lausanne，Switzerland：Cole Polytechnique Fédérale de Lausanne，2014.
[1]	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 Shuqiang，CHENG Xiaohui. 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))
[11]	PLASEIED N. Load-transfer analysis of energy foundations[M. S. Thesis][D]. Boulder：University of Colorado at Boulder，2012.
[21]	NG C W W，SHI C，GUNAWAN A，et al. Centrifuge modelling of heating effects on energy pile performance in saturated sand[J]. Canadian Geotechnical Journal，2014，52(8)：1 045-1 057.
[9]	黄胤培，蒋刚，路宏伟，等. 基于指数模型的能源桩热-力耦合荷载传递法[J]. 南京工业大学学报：自然科学版，2019，41(1)：96-103.(HUANG Yinpei，JIANG Gang，LU Hongwei，et al. Thermo- mechanical coupling load transfer method of energy pile based on exponential model[J]. Journal of Nanjing University of Technology：Natural Science，2019，41(1)：96-103.(in Chinese))
[19]	LEE C Y. Pile grounds under negative skin friction[J]. Journal of Geotechnical Engineering，1993，119(10)：1 587-1 600.
[3]	GOODE J C I，MCCARTNEY J S. Centrifuge modeling of end- restraint effects in energy foundations[J]. Journal of Geotechnical and Geoenvironmental Engineering，2015，141(8)：04015034.
[5]	刘汉龙，王成龙，孔纲强，等. 不同压实度下能量桩的热力学效应[J]. 中国科技论文，2016，11(13)：1 511-1 515.(LIU Hanlong，WANG Chenglong，KONG Gangqiang，et al. Thermal-mechanical characteristics of energy pile under different degree of compaction[J]. China Sciencepaper，2016，11(13)：1 511-1 515.(in Chinese))
[6]	孔纲强，王成龙，刘汉龙，等. 多次温度循环对能量桩桩顶位移影响分析[J]. 岩土力学，2017，38(4)：958-964.(KONG Gangqiang，WANG Chenglong，LIU Hanlong，et al. Analysis of pile head displacement of energy pile under repeated temperature cycling[J]. Rock and Soil Mechanics，2017，38(4)：958-964.(in Chinese))
[8]	郝耀虎，孔纲强，彭怀风，等. 桩端约束对桩身热力学特性影响的模拟分析[J]. 防灾减灾工程学报，2017，37(4)：532-539.(HAO Yaohu，KONG Gangqiang，PENG Huaifeng，et al. Analysis of thermo-mechanical behavior of single pile influenced by pile tip constraint[J]. Journal of Disaster Prevention and Mitigation Engineering，2017，37(4)：532-539.(in Chinese))
[10]	KNELLWOLF C，PÉRON H，LALOUI L. Geotechnical analysis of heat exchanger Piles[J]. Journal of Geotechnical and Geoenvironmental Engineering，2011，137(10)：890-902.
[14]	罗喆，胡彪. 基于热力荷载传递原理的能量桩长期响应研究[J]. 防灾减灾工程学报，2019，39(4)：549-555.(LUO Zhe，HU Biao. Long-term response of energy pile based on thermo-mechanical load-transfer principle[J]. Journal of Disaster Prevention and Mitigation Engineering，2019，39(4)：549-555.(in Chinese))
	LORIA A F R，GUNAWAN A，SHI C，et al. Numerical modelling of energy piles in saturated sand subjected to thermo-mechanical loads[J]. Geomechanics for Energy and the Environment，2015，1(1)：1-15.
[15]	KEZDI A. Bearing capacity of piles and pile groups[C]// Proceedings of the 4th International Conference on Soil Mechanics and Foundation Engineering．London：[s. n.]，1957：46-51.
[16]	齐文浩. 土层非线性地震反应分析方法研究[博士学位论文][D]. 哈尔滨：中国地震局工程力学研究所，2008.(QI Wenhao. The study on method of seismic response analysis of nonlinear soil layers[Ph. D. Thesis][D]. Harbin：Institute of Engineering Mechanics，China Earthquake Administration，2008.(in Chinese))
[18]	RANDOLPH M F，WROTH C P. Analysis of vertical de-formation of vertically loaded piles[J]. International Journal of Rock Mechanics and Mining ences and Geomechanics Abstracts，1978，104(12)：1 465- 1 488.
[20]	WONG K S，TEH C I. Negative skin friction on piles in layered deposits[J]. Journal of Geotechnical Engineering，1995，457(6)：457-465.
[23]	江强强，焦玉勇，骆进，等. 能源桩传热与承载特性研究现状及展望[J]. 岩土力学，2019，40(9)：3 351-3 362.(JIANG Qiangqiang，JIAO Yuyong，LUO Jin，et al. Review and prospect on heat transfer and bearing performance of energy piles[J]. Rock and Soil Mechanics，2019，40(9)：3 351-3 362.(in Chinese))