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.
运用固定网格的结点虚流量法、非均质成层材料单元、缝面无厚度平面单元等,对江垭碾压混凝土坝渗流场进行了建模与分析研究。
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.
:基于长江三峡大坝碾压混凝土方案左厂房 12号坝段上部为常态混凝土、下部为上下游面均设有常态混凝土的防渗结构型式的碾压混凝土坝的特点 ,借助于渗流场求解的结点虚流量法及排水子结构技术 ,并提出“排水孔开关器”的概念和渗流非均质成层材料单元模型 ,对坝中设计时存在的主要渗流疑虑问题、大坝的防渗与排水设施渗控方案的特性进行了数值分析研究 。
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.
针对成层粘弹性地基模型 ,运用Laplace变换及矩阵传递法求解了任意荷载下成层粘弹性地基一维变形问题 ,得到了频域内的通解 ,通过Laplace逆变换 ,即可计算成层粘弹性地基在任意荷载下的一维变形· Terzaghi一维固结理论解是本文的一个特例· 结合三层地基的算例 ,可以看到粘弹性地基的固结相对于弹性地基有个滞后过程 ,但随时间最终趋于一致 ;循环荷载下粘弹性多层地基固结时 ,其有效应力和变形都呈振荡增长 ,且不与荷载同步 ,而要相对滞后· 此外 ,通过一工程实例 ,对该方法的可靠性进行论证 ,以证明该法确能指导工程实