排水井孔径及边界取值对土层平均固结度的影响  

The Influence of Drainage Well Apertures and Borehole Boundary Values on Average Degree of Consolidation in Saturated Clay

作　　者：顾丽媛 高子坤 GU Liyuan;GAO Zikun(School of Civil Engineering,Putian University,Putian Fujian 351100,China;Civil Engineering Department,Lishui University,Lishui Zhejiang 323000,China)

机构地区：[1]莆田学院土木工程学院,福建莆田351100 [2]丽水学院土木工程系,浙江丽水323000

出　　处：《莆田学院学报》2023年第2期79-83,共5页Journal of putian University

基　　金：丽水市科技计划项目(2021GYX02)。

摘　　要：构造针对非0常数水头和水力梯度边界的齐次化函数,应用叠加运算得到新的齐次边界条件和泛定方程,再应用分离变量法构建特征函数等方法推导得到饱和黏土中具排水井条件下的固结渗流理论解答,对不同渗流排水井孔径和边界取值情况下的土层平均固结度进行计算,依据计算结果分析孔径和边界取值对固结速度的影响规律。The theoretical solution is derived with drainage wells in saturated clay.A new homogeneous boundary condition and a generalized equation are obtained by superposition of a homogeneous function for a non-0 constant water pressure or hydraulic gradient boundary.Then a characteristic function is constructed by separation of variables,and the solution of consolidated seepage theory with drainage wells in saturated clay is obtained.According to the solution of consolidation seepage,the average consolidation degree of soil layer under different apertures and borehole boundary values of seepage-induced drainage wells is calculated,and the influence of apertures and borehole boundary values on the rate of consolidation is analyzed.The results are of guiding significance for consolidation design and construction of geotechnical engineering.

关 键 词：平均固结度 排水井孔径 边界取值 特征函数 

分 类 号：TU47[建筑科学—结构工程]