Displacement inverse analysis of casing external loads of creep stratum 蠕變地層套管外載計算的位移反分析法
Application of reverse analysis for displacement to pile - foundation project 位移反分析法在樁基工程中的應用
Back analysis method 反分析法
Systemic numerical tests are made first , to study the parameter sensitivity of cohesion and friction angle and other elastic parameters to the convergence in tunnel . some comprehensive parameter sensitivity laws have been draw thought these numerical tests . the method of emulating back analysis is illustrated secondly , in detail by tracing the excavation and supporting conditions by the special numerical modeling rested in final program 主要研究成果: ( 1 )建立使各個參數靈敏度值具有可比性的靈敏度計算公式,不僅得到了靈敏度分布規律,而且還得到了各參數對位移的量化影響結果; ( 2 )詳細闡述了巖土工程仿真反演分析思路與具體方法; ( 3 )假定圍巖為理想彈塑性模型,在可量測出理論上認為不可測的塑性變形、實現彈塑性位移分離的前提下,提出了彈塑性問題的分步反分析法。
According to the problem of failure and instability in subgrade engineering , on the basis of inhomogeneous elastic damage model , in this paper fem back - analysis from instability - strength degradation is propose , which suggests that the material parameter obey statistical distribution and it is used to describe the inhomogeneity of material 摘要針對路基工程變形與失穩問題,本文提出了基于非均質彈性損傷模型的有限元失穩強度折減反分析法,認為材料參數服從統計分布,并以此來描述材料的非均勻性。
According to the problem of failure and instability in roadbed and cutting engineering of underground karat cavity , on the basis of inhomogeneous elastic damage model , this thesis propose the fem back - analysis from instability - strength degradation , to describe inhomogeneity of material suppose that the material parameter obeys statistical distribution 摘要針對地下溶洞路床路塹工程變形與失穩問題,本文提出了基于非均質彈性損傷模型的有限元失穩強度折減反分析法,認為材料參數服從統計分布來描述材料的非均勻性。