Reliability Design of Energy Pile Structure based on Improvement of G-functions

张培龙; 裴华富; 宋怀博; 白丽丽

doi:10.13409/j.cnki.jdpme.2019.04.014

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Reliability Design of Energy Pile Structure based on Improvement of G-functions

更新时间：2025-12-11

- Reliability Design of Energy Pile Structure based on Improvement of G-functions
- Vol. 39, Issue 4, Pages: 636-644(2019)
- 作者机构：
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- DOI：10.13409/j.cnki.jdpme.2019.04.014
  CLC： U473.1;TU83
- Published：2019
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[1]张培龙,裴华富,宋怀博,白丽丽.基于改进G-函数的能量桩结构可靠性设计[J].防灾减灾工程学报,2019,39(04):636-644.

张培龙, 裴华富, 宋怀博, et al. Reliability Design of Energy Pile Structure based on Improvement of G-functions[J]. 2019, 39(4): 636-644.
[1]张培龙,裴华富,宋怀博,白丽丽.基于改进G-函数的能量桩结构可靠性设计[J].防灾减灾工程学报,2019,39(04):636-644. DOI： 10.13409/j.cnki.jdpme.2019.04.014.

张培龙, 裴华富, 宋怀博, et al. Reliability Design of Energy Pile Structure based on Improvement of G-functions[J]. 2019, 39(4): 636-644. DOI： 10.13409/j.cnki.jdpme.2019.04.014.

摘要

为优化能量桩施工前期设计工作

提高能量桩传热和承载特性效率

采用曲线拟合对能量桩G-函数进行改进

构造了包含桩身尺寸、岩土热物性等参数的响应函数

用Comsol数值模拟验证其正确性

并探讨了其随各因素变化的规律;用Python软件编制MCS循环来计算不确定场地参数下设计方案的可靠度

汇总工程案例来验证设计模型的正确性

并利用上海某场地参数进行全面的设计步骤。结果表明:在改进G-函数的模型中

利用MCS循环计算可以充分考虑土性参数、桩身尺寸及理论模型的不确定性

给出最佳传热效果和承载特性的设计组合。

Abstract

In order to optimize the pre-construction design and improve the heat transfer and load bearing characteristic efficiency of the energy pile

curve fitting is adopted to improve the G-function of the energy pile.The response functions are constructed including pile size

geotechnical thermal properties and other parameters.The change rule of the constructed function with each factor was discussed.Its correctness is verified by numerical simulation using Comsol.MCS cycle was programmed with Python software to calculate the reliability of the design scheme under uncertain site parameters.The correctness of the design model is verified by summarizing engineering cases

and the overall design steps are carried out by using parameters of a site in Shanghai.The results show that the uncertainty of soil parameters

pile size and theoretical model can be fully considered by MCS cycle calculation in the improved G-function model

aiming to determine the best design combination and taking heat transfer effect and load bearing characteristics into account.

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references

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