复合单元法在深基坑降水井设计中的应用  

Application of composite element method to the design of well drainage in deep foundation pit

作　　者：胡静[1] 

机构地区：[1]武汉理工大学土木与建筑工程学院,湖北武汉430072

出　　处：《水力发电》2005年第2期41-43,共3页Water Power

基　　金：国家自然科学基金资助项目(50239070)

摘　　要：复合单元法是在由岩土体子单元和降水井子单元构成的复合单元上建立与常规有限元形式相同的插值函数,以复合单元上对应节点水头为变量,插值得到各子单元的水头值。复合单元法可方便地对多种降水井设计方案进行优化选择。通过一个含无压降水井渗流场的算例,运用有限单元法与复合单元法按照流量相等的原则对结果进行比较,证明复合单元法具有一定的工程实用性。In this paper ″composite element method″ is proposed to simulate the well drainage. The soil and well drainage are looked at as two kinds of physical overlays within the composite element and to form two sub elements. The shape function identical to the FEM is built on the composite element and the hydraulic potential in each sub element is interpolated from the nodal hydraulic potential of the composite element. This method is convenient to choose optimal plan within kinds of well drains designs. It is proved by an example of seepage field with a well drainage that the method is easy to be applied in the engineering practices.

关 键 词：深基坑 降水井 复合单元 有限单元 

分 类 号：O357.3[理学—流体力学]