复杂多滑动面混凝土重力坝稳定分析与安全评价

Anti-sliding stability analysis of the complicated foundation with multi glide plane in concrete gravity dam

针对复杂多滑动面的混凝土重力坝深层抗滑稳定问题,应用三维快速拉格朗日差分法对大坝和地基进行弹塑性应力应变分析,采用强度储备法研究了大坝的失稳破坏机理,并根据提出的应力校核法和强度储备法的安全评价准则对大坝的安全储备进行了评价,成果对实际工程应用具有一定的价值,也为其他类似工程提供了参考.

Three Dimensional Fast Lagrangian Analysis of Continuum （FLAC3D） is applied to study the stability against sliding of the foundation with complicated multi slide plane in a concrete gravity dam. Elastic-plastic stress and strain analysis of the dam and foundation is done and the mechanism of sliding is revealed by the strength reserve coefficient method. Then the safety of dam is evaluated by using the rules of stress examination law and the margin of the safety method in the safety evaluation criterion proposed in this paper. The achievements are of some values to the actual project application