By use of the node virtual discharge method and introduction of inhomogeneous stratified material elements and planar non-thickness elements, a numerical model is established for analysis of the seepage field of the Jiangya roller compacted concrete gravity dam.

運用固定網格的結點虛流量法、非均質成層材料單元、縫面無厚度平面單元等,對江埡碾壓混凝土壩滲流場進行了建模與分析研究。

90?m and RCC concrete below the elevation and with an upstream conventional concrete slab structure for impermeabilization,the authors develop an inhomogeneous multi laminate media element model for seepage analysis of RCC dams based on the research of the numerical procedure of nodal virtual flux and the technique of draining substructure for drainage holes.

:基于長江三峽大壩碾壓混凝土方案左廠房 12號壩段上部為常態(tài)混凝土、下部為上下游面均設有常態(tài)混凝土的防滲結構型式的碾壓混凝土壩的特點 ,借助于滲流場求解的結點虛流量法及排水子結構技術 ,并提出“排水孔開關器”的概念和滲流非均質成層材料單元模型 ,對壩中設計時存在的主要滲流疑慮問題、大壩的防滲與排水設施滲控方案的特性進行了數值分析研究 。

Based on the layered visco_elastic soil model, according to the Terzaghi s one dimensional consolidation theory, by the method of Laplace transform and matrix transfer technique, the problems about the consolidation of layered and saturated visco_elastic soils under arbitrary loading were solved.

針對成層粘彈性地基模型 ,運用Laplace變換及矩陣傳遞法求解了任意荷載下成層粘彈性地基一維變形問題 ,得到了頻域內的通解 ,通過Laplace逆變換 ,即可計算成層粘彈性地基在任意荷載下的一維變形·　Terzaghi一維固結理論解是本文的一個特例·　結合三層地基的算例 ,可以看到粘彈性地基的固結相對于彈性地基有個滯后過程 ,但隨時間最終趨于一致 ;循環(huán)荷載下粘彈性多層地基固結時 ,其有效應力和變形都呈振蕩增長 ,且不與荷載同步 ,而要相對滯后·　此外 ,通過一工程實例 ,對該方法的可靠性進行論證 ,以證明該法確能指導工程實