Based on the simplified structure of rock mass , three - dimensional finite element numerical modeling technique is used to analyze systematically the distribution features of filed , strain field and plastic zone in the surrounding rock mass of the underground cavities after the excavation 在巖體結(jié)構(gòu)模型概化的基礎(chǔ)上,采有三維有限元數(shù)值分析方法,系統(tǒng)研究了大跨度、高邊墻地下洞室群開挖完成后圍巖的二次應(yīng)力場、變形場和塑性破壞區(qū)的變化特征。
A finite element numerical model for arch dam - gravity pier - foundation system was established to evaluate the effect of high gravity piers on the stress , deformation and anti - sliding stability of sizhai arch dam , taking the following factors into account , such as the possible elastoplastic deformation of foundation rocks and the nonlinear interaction between the interfaces of gravity pier - dam foundation , the joint surfaces beneath the right bank , and the interfaces of arch dam - gravity pier 摘要為評價(jià)高重力墩對四寨拱壩的應(yīng)力變形和抗滑安全的影響,建立了拱壩重力墩地基系統(tǒng)的有限元數(shù)值模型,其中考慮重力墩基礎(chǔ)、右岸夾層和拱壩重力墩等交界面的非線性相互作用,以及基巖材料的彈塑性變形行為。