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| 半空间饱和土内置点载荷作用下的热弹性波动 | |
| 引用本文： | 郑荣跃,刘干斌,梧松. 半空间饱和土内置点载荷作用下的热弹性波动[J]. 力学学报, 2008, 40(3): 413-420. DOI: 10.6052/0459-1879-2008-3-2007-176 |
| 作者姓名： | 郑荣跃 刘干斌 梧松 |
| 作者单位： | 宁波大学建筑工程与环境学院,宁波,315211;国防科技大学航天与材料工程学院,长沙,410073;宁波大学建筑工程与环境学院,宁波,315211 |
| 基金项目： | 浙江省自然科学基金，浙江省宁波市自然科学基金 |
| 摘 要： | 基于Biot波动理论及热弹性动力理论，利用已建立的饱和多孔弹性介质热流固耦合控制方程，研究半无限地基在内置点热力源作用下的动力响应问题. 求解过程引用Hankel变换技术，得到了热力源作用下土体中温度增量、应力、位移和孔隙水压力的积分形式解答.利用Hankel数值逆变换得到计算结果，分析了热流固耦合条件下激振频率对竖向位移和孔隙水压力响应的影响. 对热流固耦合、热弹性和多孔弹性模型计算结果进行了比较. |
| 关 键 词： | 半空间饱和土 多孔弹性 热流固耦合 动力响应 Hankel变换 |
| 收稿时间： | 2007-04-09 |
| 修稿时间： | 2008-01-30 |
COUPLING THERMO-HYDRO-MECHANICAL DYNAMIC RESPONSE OF SATURATED SOIL SUBJECTED TO INTERNAL EXCITATION |
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| Zheng Rongyue,Liu Ganbin,Wu Song. COUPLING THERMO-HYDRO-MECHANICAL DYNAMIC RESPONSE OF SATURATED SOIL SUBJECTED TO INTERNAL EXCITATION[J]. chinese journal of theoretical and applied mechanics, 2008, 40(3): 413-420. DOI: 10.6052/0459-1879-2008-3-2007-176 | |
| Authors: | Zheng Rongyue Liu Ganbin Wu Song |
| Affiliation: | College of Civil, Construction and Environmental Engineering, Ningbo University, Ningbo 315211, ChinaCollege of Civil, Construction and Environmental Engineering, Ningbo University, Ningbo 315211, ChinaCollege of Civil, Construction and Environmental Engineering, Ningbo University, Ningbo 315211, China |
| Abstract: | Dynamic response of saturated half-space foundationsubject to an internal heat/mechanical excitation is investigatedtheoretically with Biot's wave theory and thermodynamic theory. Thefoundation is idealized to be uniform and poroelastic. The governingequations of the thermo-hydro-mechanical coupling are presented. Theanalytical solutions of temperature increment, stress, displacement and porepressure are derived with the forward and the inverse Hankel transform.Numerical results are obtained to analyze the effect of the internalexcitation frequency on the vertical displacement and the pore pressure. Inaddition, the cases of thermo-elastic and porous elastic models are comparedin the numerical results. |
| Keywords: | a half space saturated soil porous medium coupling thermo-hydro-mechanical dynamic response Hankel transform |
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