堤坝地基塑性变形分析方法

The method summarization of plastic flow analysis for levee and its foundation

江河、湖泊堤坝地基一般属软土地基 ,大多没有经过地基处理 ,在高水位下容易发生管涌、滑坡等渗透变形 ,危及堤坝的安全。堤坝地基渗透变形与地基塑性变形有密切关系。在堤坝防渗加固工程设计中应当重视塑性变形分析。本文针对江河、湖泊堤坝塑性变形的分析方法进行了探讨。

The levee foundations of rivers and lakes are often soft subsoils.Many of them can not be treated.The pipings and landslides are easily happened under high water level,and endanger the safeties of the levees.The seepage deformations of the levee foundation relate to the plastic deformations closely.The plastic deformation analysis can be paid attention to designing the impervious reinforcements of the levees.This paper discusses analysis methods of the plastic deformation about the levee foundations of rivers and lakes.The finite element plastic deformation analysis and minimal stress safety coefficient are best methods of plastic deformation analysis in the stability analysis of the levees at present.