An implicit integration elastic stiffness method has been developed for the finite element analysis of rock and soil elastoplastic models.
本文提出了用于岩土弹塑性有限元分析的隐式积分弹性刚度算法。
In the application of elastoplastic medium theory, the rock and soil are assumed to be elastoplastic medium, and the stress change due to tunnel excavation can be calculated, too.
应用弹塑性介质的本构理论，视岩体为弹塑性体，得到隧道开挖引起的地层应力变化计算公式、计算程序。
The models in common use with elastoplastic analysis of rock mass, conception of critical state and the cap models that reflect strain hardening (or softening) of rocks are discussed.
介绍了岩体弹塑性分析常用的模型、临界状态的概念以及反映岩石塑性应变硬化(及软化)的帽式模型。
Applying the method mentioned above to practical engineering to back-analyse the elastoplastic model and parameters of rock. Validating and utilizing the results identified.
结合具体工程，将以上提出的方法应用于岩体弹塑性模型及参数辨识，并对辨识结果进行了检验和应用。
This paper analyses grouting reinforcement's influence on slide plane and surrounding rock stability during the construction in Caijiapo tunnel, using the elastoplastic finite element method.
采用弹塑性有限元法分析了柴家坡隧道在施工过程中注浆加固对滑动面和围岩稳定性的影响。
Based on a complete stress-strain curve of the rock, an elastoplastic formula describing rock deformation failure is established.
从岩石的全应力-应变曲线出发，建立了描述围岩变形破坏的弹塑性本构方程。
The result of elastoplastic analysis proves that the effects of fault on the distribution of tunnel surrounding rock mass plastic zone also are significant.
进一步验证了前一部分研究工作的可信性。弹塑性分析的结果说明断层对隧洞围岩塑性区的分布也有明显的影响。
The problem becomes more sophisticated when elastoplastic properties of rock mass and structures are considered.
对于考虑介质与结构弹塑性性质的课题，解析解更难以求得。
The fitting results show that the visco-elastoplastic model is more suitable than the Burgers model to describe rock rheological characteristics.
拟合结果表明，西原模型比伯格斯模型更适合于描述岩石的蠕变特性。
Based on the conventional triaxial experiments for sand, the elastoplastic constitutive model of sand is built up through the numerical method of modeling the constitutive law for rock and soil.
基于砂土的常规三轴试验，利用岩土本构关系的数值建模方法，建立砂土的弹塑性本构模型。
This paper analyses grouting reinforcements influence on slide plane and surrounding rock stability during the construction in Caijiapo tunnel, using the elastoplastic finite element method.
采用弹塑性有限元法分析了柴家坡隧道在施工过程中注浆加固对滑动面和围岩稳定性的影响。
In this paper, the elastoplastic incremental finite element method with variable plastic stiffness is used to analyse the surrounding rock stability of underground openings.
本文采用三维弹塑性增量变塑性刚度有限元法计算地下洞室围岩稳定。
Based on the experimental results, the elastoplastic constitutive model with swelling and strain softening for swelling rock is proposed.
基于试验结果，提出考虑膨胀岩膨胀及软化特性的弹塑性本构模型。
The slot elements are set up to simulate slot between lining and rock mass and the 3 D elastoplastic FEM is adopted with multi stage load and changible stiffness iteration.
在压力隧洞充水运行时，对衬砌与围岩之间的接缝采用接缝空腔单元模拟。
The joints make intension of the rock mass decrease. According to these characteristics, a new visco-elastoplastic mechanical model is deduced.
针对这些特点，综合考虑损伤和流变的影响，推导出基于西原体模型的黏弹塑性损伤本构模型。
The joints make intension of the rock mass decrease. According to these characteristics, a new visco-elastoplastic mechanical model is deduced.
针对这些特点，综合考虑损伤和流变的影响，推导出基于西原体模型的黏弹塑性损伤本构模型。
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