Numerical Simulation Study on Deformation of PCC Energy Pile with Spiral Heat Source

高磊; 季保全; 刘汉龙; 陈育民; 曹阳

doi:10.13409/j.cnki.jdpme.2019.04.013

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Numerical Simulation Study on Deformation of PCC Energy Pile with Spiral Heat Source

更新时间：2025-12-11

- Numerical Simulation Study on Deformation of PCC Energy Pile with Spiral Heat Source
- Vol. 39, Issue 4, Pages: 628-635(2019)
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- DOI：10.13409/j.cnki.jdpme.2019.04.013
  CLC： U473.1;TU83
- Published：2019
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[1]高磊,季保全,刘汉龙,陈育民,曹阳.螺旋式热源PCC能量桩桩身变形数值模拟研究[J].防灾减灾工程学报,2019,39(04):628-635.

高磊, 季保全, 刘汉龙, et al. Numerical Simulation Study on Deformation of PCC Energy Pile with Spiral Heat Source[J]. 2019, 39(4): 628-635.
[1]高磊,季保全,刘汉龙,陈育民,曹阳.螺旋式热源PCC能量桩桩身变形数值模拟研究[J].防灾减灾工程学报,2019,39(04):628-635. DOI： 10.13409/j.cnki.jdpme.2019.04.013.

高磊, 季保全, 刘汉龙, et al. Numerical Simulation Study on Deformation of PCC Energy Pile with Spiral Heat Source[J]. 2019, 39(4): 628-635. DOI： 10.13409/j.cnki.jdpme.2019.04.013.

摘要

采用多场耦合软件

建立了螺旋式热源PCC能量桩数值分析模型

分析了温度、荷载、热源匝数、桩长、混凝土密度及混凝土弹性模量等因素对能量桩桩身应变分布的影响。研究结果表明:在无热源情况下

PCC能量桩桩身应变随着桩顶荷载的增大而增大

沿着桩身自上而下逐渐减小;热源的存在会导致桩身应变由正变负

说明了温度因素的主导性;桩身应变会随热源温度的升高而减小

在同一热源温度下相同位置处桩身应变均随着桩顶荷载的增加而增加;设定在热源温度50.5℃和桩端顶面40kN荷载条件下

热源匝数数量的减少会导致桩身应变的增大;桩身应变随着桩长的不断减小而减小;混凝土密度的减小使得桩身应变不断减小;混凝土弹性模量减小导致桩身应变的增大。

Abstract

The numerical analysis model of spiral heat source PCC energy pile is established by using multiple-field coupling software.The influences of temperature

load

number of heat source turns

pile length

concrete density and elastic modulus of concrete on the strain distribution of energy pile are analyzed.The results show that:in the case of no heat source

the strain of PCC energy pile increases with the increase of pile top loads.The strain of pile decreases gradually along the pile body from top to bottom.The existence of a heat source will lead to the strain of pile changing from positive to negative

which indicates the dominance of the temperature factor.The strain of pile will decrease with the heat source temperature increasing.The strain of pile increases with the increase of pile top load at the same location under the heat source temperature.With the condition of a heat source temperature of 50.5℃and a load of 40 kN on top of pile

the decrease of heat source turns number can cause the increase of pile strain.The strain of pile decreases with the decrease of pile length.The decrease of concrete density makes the strain of pile reduce.The decrease of the elastic modulus of concrete leads to a rise of the pile strain.

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references

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