摘要
结合有限元方法的计算特点,根据有限元计算结果中坝体的位移突变及塑性区发展来判断拱坝的稳定性,并与刚体极限平衡法稳定分析结果进行了比较。结果表明:有限元法稳定分析结果与刚体极限平衡法一致,有限元法能够克服刚体极限平衡法的缺陷,模拟坝体混凝土和岩体的非线性本构关系,并将坝体和基岩作为整体模型进行计算分析,从而能真实反映拱坝坝肩岩体的失稳机理和破坏过程,为评价拱坝坝肩的稳定性提供依据。
According to the characteristics of the FEM, the displacement catastrophe and plastic zone development were used to analyze the stability of the arch dam, and compared with the rigid body limit equilibrium method. The results show that the conclusion is similar between the results of FEM and the rigid body limit equilibrium method, FEM can reveal the nonlinear constitutive relation of the concrete and the rock, so the model in- eluding dam and rock can reveal the instability mechanism and damage process factually, it provides guarantee for stability analysis of arch dam.
出处
《人民黄河》
CAS
北大核心
2012年第9期95-97,共3页
Yellow River
关键词
拱坝
稳定分析
有限元方法
超载法
刚体极限平衡法
塑性区
arch dam
stability analysis
finite element method
overload method
rigid body limit equilibrium method
plastic zone
