桩端约束对桩身热力学特性影响的模拟分析

郝耀虎; 孔纲强; 彭怀风; 刘汉龙; 车平

doi:10.13409/j.cnki.jdpme.2017.04.004

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桩端约束对桩身热力学特性影响的模拟分析

能源桩与能源隧道工程 | 更新时间：2025-12-11

- 桩端约束对桩身热力学特性影响的模拟分析
- Analysis of Thermo-mechanical Behavior of Single Pile Influenced by Pile Tip Constraint
- 防灾减灾工程学报 2017年37卷第4期页码：532-539
- 作者机构：
- 作者简介：
- 基金信息：
  
  国家自然科学基金项目（51378178、51306080）资助
- DOI：10.13409/j.cnki.jdpme.2017.04.004
  中图分类号： U473.1;TU83
- 纸质出版：2017
- 稿件说明：
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[1]郝耀虎,孔纲强,彭怀风,刘汉龙,车平.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(04):532-539.

郝耀虎, 孔纲强, 彭怀风, et al. Analysis of Thermo-mechanical Behavior of Single Pile Influenced by Pile Tip Constraint[J]. 2017, 37(4): 532-539.
[1]郝耀虎,孔纲强,彭怀风,刘汉龙,车平.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(04):532-539. DOI： 10.13409/j.cnki.jdpme.2017.04.004.

郝耀虎, 孔纲强, 彭怀风, et al. Analysis of Thermo-mechanical Behavior of Single Pile Influenced by Pile Tip Constraint[J]. 2017, 37(4): 532-539. DOI： 10.13409/j.cnki.jdpme.2017.04.004.

摘要

能量桩是一种在传递上部建筑荷载的同时承担地热能源传热器作用的新技术。实际运行过程中

桩身温度发生变化导致桩体膨胀或收缩;桩周及桩端土体对桩身的自由膨胀约束作用

使桩体内会产生附加应力。基于模型试验和数值模拟方法

开展冷-热温度循环荷载作用下桩基在不同桩端约束条件下的桩身应力和位移特性研究。结果表明

温度荷载作用下桩体最大应力出现在桩身中部;加热阶段桩端约束对桩身应力分布影响比制冷时大;桩身位移变化规律受温度与桩端约束的共同影响

温度变化量增加

桩身上部位移变化量变大

下部位移受影响较小。

Abstract

Energy pile is an innovate technology

which can support the building load and acquire geothermal energy simultaneously. In the actual operation process

the temperature of pile body will change significantly

causing the expansion or contraction of the pile

and due to the constraint of pile end and soil around the pile

the pile will produce additional heat stress. Based on model test and numerical simulation methods

the heat stress and displacement of energy piles under cold-thermal cycling loading with different pile tip constraints are analyzed. The results show that the maximum stress of the pile is in the middle of the pile under the temperature load.In the heating stage the effect of pile tip restraint on the stress distribution of pile is stronger than that in refrigeration stage. The variation of pile displacement is affected by both of temperature and pile end constraint. The displacement of the upper part of the pile is greatly affected by the temperature.

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references

摩擦型能源桩荷载–温度现场联合测试与承载性状分析 [J]. 路宏伟,蒋刚,王昊,洪鑫,史春乐,龚红卫,刘伟庆. 岩土工程学报 . 2017(02)

循环温度场作用下PCC能量桩热力学特性模型试验研究 [J]. 黄旭,孔纲强,刘汉龙,吴宏伟. 岩土力学 . 2015(03)

能源桩换热过程中结构响应原位试验研究 [J]. 桂树强,程晓辉. 岩土工程学报 . 2014(06)

能量桩工程应用研究进展及PCC能量桩技术开发 [J]. 刘汉龙,孔纲强,吴宏伟. 岩土工程学报 . 2014(01)

北京细砂土邓肯-张模型参数试验研究 [J]. 冯卫星,常绍东,胡万毅. 岩石力学与工程学报 . 1999(03)

Parameterization of a calibrated geothermal energy pile model [J] . Robert Caulk,Ehsan Ghazanfari,John S. McCartney. Geomechanics for Energy and the Environment . 2015

Centrifuge Modeling of End-Restraint Effects in Energy Foundations [J] . J. C. Goode,John S. McCartney. Journal of Geotechnical and Geoenvironmental Engineering . 2015

Numerical Study on the Suitability of Centrifuge Testing for Capturing the Thermal-Induced Mechanical Behavior of Energy Piles [J] . Alessandro F. Rotta Loria,Alice Di Donna,Lyesse Laloui. Journal of Geotechnical and Geoenvironmental Engineering . 2015

Numerical modelling of energy piles in saturated sand subjected to thermo-mechanical loads [J] . Alessandro F. Rotta Loria,Anthony Gunawan,Chao Shi,Lyesse Laloui,Charles W.W. Ng. Geomechanics for Energy and the Environment . 2015

Numerical analysis of seasonal heat storage in an energy pile foundation [J] . Fabrice Dupray,Lyesse Laloui,Albin Kazangba. Computers and Geotechnics . 2014

Centrifuge Modeling of Soil-Structure Interaction in Energy Foundations [J] . Melissa A. Stewart,John S. McCartney. Journal of Geotechnical and Geoenvironmental Engineering . 2013

Elasto-plastic analysis of the interface behaviour between granular media and structure [J] . V.De Gennaro,R. Frank. Computers and Geotechnics . 2002 (7)

Thermo-mechanical behaviour of soils [J] . Lyesse Laloui. Revue Fran?aise de Génie Civil . 2001 (6)

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