变温度荷载作用下半无限成层饱和介质的热固结分析

白冰

变温度荷载作用下半无限成层饱和介质的热固结分析

白冰

北京交通大学土木建筑工程学院,北京 100044

基金项目: 国家自然科学基金资助项目(50578008)

详细信息

作者简介:
白冰(1966- ),男,内蒙古人,教授,博士(E-mail:Baibing66@263.net).

中图分类号: O357.3；TU41
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出版历程
- 收稿日期: 2005-12-01
- 修回日期: 2006-07-02
- 刊出日期: 2006-11-15

Thermal Consolidation of Layered Porous Half-Space to Variable Thermal Loading

BAI Bing

School of Civil and Architecture Engineering, Beijing Jiaotong University, Beijing 100044, P. R. China

摘要

摘要: 对半无限成层饱和多孔介质作用随时间变化的温度荷载的热固结问题进行解析求解．其中，热-水-力耦合线性弹性控制方程考虑了热渗效应和等温热流效应的影响．先采用Laplace变换求其在变换域上的解，然后用数值方法求逆变换．对半无限体表面作用呈指数衰减热荷载的双层体系进行研究，分析了两层介质热固结系数、弹性模量等的差异性对热固结特征的影响．研究表明：位移场和应力场对温度场的耦合作用可以忽略，而热渗效应对温度和孔压有显著影响．
- 温度荷载 /
- 半无限体 /
- 多孔介质 /
- 数值积分
Abstract: An analytical method was derived for the thermal consolidation of layered,saturated porous half-space to variable thermal loading with time.In the coupled governing equations of linear thermoelastic media,the influences of thermo-osmosis effect and thermal filtration effect were introduced.Solutions in Laplace transform space were first obtained and then numerically inverted.The responses of a double-layered porous space subjected to exponential decaying thermal loading were studied.The influences of the differences between the properties of the two layers(e.g.the coefficient of thermal consolidation,elastic modulus)on thermal consolidation were discussed.The studies show that the coupling effects of displacement and stress fields on temperature field can be completely neglected,however,the thermo-osmosis effect has an obvious influence on thermal responses.
- thermal loading /
- half-space body /
- porous medium /
- numerical integration

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参考文献(15)

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