摘要
针对岩土工程位移反分析 ,提出一般地应力场优化设计的数学形式 ,构造了岩层变形破坏的结构性计算模型 .应用以有限元和约束优化为基础的正定式化方法进行了多参数约束反演 ,并编制了计算程序 .通过地应力参数和岩层结构模量的数值反演算例 ,说明优化设计和约束反演能同时有效地识别多个参数 ,可提高反演可靠性和准确度 ,且能保障计算稳定性 .
Aiming at back analysis of measured displacements of geotechnical engineering, the paper proposes formula of optimum design for ordinary in-situ stresses field, constructs structural computing model for rock deformation, identifies multiple parameters using direct formulation method which is based on FE method and constrained optimization method, and designs a corresponding program. In the end, the paper provides a numerical inversion case for identifying in-situ stresses parameters and rock structure modulus. The results show that optimum design and constrained inversion can identify multiple parameters effectively at one time, can enhance inversion reliability and accuracy, and can ensure computing stability in solving numerical inverse problems.
出处
《大连理工大学学报》
CAS
CSCD
北大核心
2002年第4期413-418,共6页
Journal of Dalian University of Technology
基金
国家自然科学基金资助项目 ( 10 0 72 0 14 )
高等学校博士学科点专项科研基金资助项目 ( 2 0 0 0 0 14 10 7)
