摘要
建立了一种边坡初始地应力场位移反分析模型。该模型抛弃了常规位移反分析模型中一步开挖完毕假定，反分析的基础位移资料可以是某阶段开挖位移增量。提出了一种反分析目标函数优化算法，该优化算法利用线弹性问题的尺度特性减少了一个优化变量，同时反演结果稳定。通过算例，文中对反分析模型和算法进行了验证。
In this paper ,a model for the back analysis of initial geostresses in cut slopes is proposed.It discards the onestep excavtion assumption in routine displacement back analysis models.The basic displacements the model uses can be the displacement increments at certain excavation stage.A new optimizing algorithm is also proposed for the model,which,using the scalar effect of elastic problems,reduces optimizing variables by one and achieves stable results.The model and the algorithm are examined through an example.
出处
《贵州工业大学学报（自然科学版）》
CAS
1997年第A10期102-107,共6页
Journal of Guizhou University of Technology(Natural Science Edition)
基金
国家基础性研究重大项目(攀登计划)资助项目
关键词
边坡
初始地应力场
位移反分析
优化算法
cut slope
initial geostresses
displacement back analysis
optimizing algorithm
