摘要
饱和土的固结问题是土力学的一个基本问题,在饱和土固结过程中往往伴有Mandel-Cryer效应,对Mandel-Cryer效应的理论研究尚不完善.以Biot饱和土理论为基础,通过直接求解饱和土球对称Biot固结方程,得到了球对称固结方程在真实空间的解析解.数值计算结果充分表现了饱和土三维固结过程中孔隙水压力在空间的分布和随时间的变化,直观反映了Mandel-Cryer效应的发展过程,同时给出了土体泊松比对Mandel-Cryer效应的影响规律.
Consolidation of saturated soil is one of the basic problems of soil mechanics. The Mandel-Cryer effect appears in three-dimension saturated soil consolidation process. But the theoretical research on Mandel-Cryer effect is not satisfied. In the paper, based on the Blot＇s saturated soil theory and without use of Laplace＇s transform, the spherical symmetrical consolidation equation of saturated soil is directly solved. The analytical expressions for soil skeleton displacement, pore water pressure and soil skeleton volumetric strain are obtained. The numerical simulations clearly demonstrate the spatial distribution of pore water pressure, the change of pore water pressure, and the development of Mandel-Cryer effect existing in the consolidation process of saturated soil. The influences of Posson ratio on the Mandel-Cryer effect are also studied.
出处
《西安建筑科技大学学报（自然科学版）》
CSCD
北大核心
2007年第2期177-180,共4页
Journal of Xi'an University of Architecture & Technology(Natural Science Edition)
基金
教育部重点科研项目(205159)
中国博士后科学基金资助项目(2003033327)
