摘要
基于非线性连续介质力学的基本理论，采用ＴｏｔａｌＬａｇｒａｎｇｉａｎ法（即ＴＬ法），在原有的小变形弹塑性软土固结程序Ｃｏｎｄｅｐ基础上，编制了二维大变形平面固结问题有限元计算程序，其中采用软土修正Ｃａｍｃｌａｙ本构模型时，考虑了刚性旋转不变性的影响．验证了程序的正确性，并就一典型的软土地基进行计算，所得结果与小变形理论结果作了对比．
On the basis of nonlinear continuum mechanics,the total Lagrangian method is used to develop CONDEP,an FEM consolidation analysis program for plane problems of small strain elasto plastic soils is developed for large strain analysis.The effect of rigidity rotation constant is observed while the modified Cam clay model is used in constitutive laws.The program is verified with a semi analytical solution.Computation is conducted for a soft ground for comparison of the results of small strain theory with those of large strain one.
出处
《河海大学学报（自然科学版）》
CAS
CSCD
1998年第1期73-77,共5页
Journal of Hohai University(Natural Sciences)
基金
南京水利科学研究院基金
关键词
饱和软土
大变形
有限元
平面固结
saturated clay
large deformation
FEM
plane problem
